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Prof Tom W Hartquist

Astrophysics Group

Contact details

Room: 9.83
Tel: +44 (0)113 3433885
Email: twh @ ast.leeds.ac.uk

Keywords

Cosmic Rays
Diffuse Astrophysical Media
Dusty Plasmas
Magnetohydrodynamics
Molecular Astrophysics
Protoplanetary Discs
Star Formation
Shocks

Research interests

My research primarily concerns diffuse astrophysical media, including the interstellar medium of the Milky Way. Physical and chemical processes operating in the interstellar medium govern star formation.

Feedback influences star formation. Positive feedback occurs when the winds and radiation fields of newly born stars cause the star formation rate in ambient matter to increase. Feedback can also be negative. During the formation of a galaxy, the nature of star formation feedback affected the final ratio of the spheroidal and disc components. Shocks play a central role in feedback. I continue to conduct research on a wide variety of interstellar shocks. In the last several years I have: a) used shock modeling together with observational results to infer how a supernova driven shock is modified by cosmic rays; b) calculated the rates at which shocks with various Mach numbers destroy inhomogeneities in which stars might otherwise form; c) determined how the inhomogeneous structure of a medium affects the large-scale properties of shock propagation; d) conducted the first investigating of the destruction of grains in oblique shocks in dusty star forming regions based on self-consistent multifluid hydromagnetic models of C-type shocks.

Around half of the interstellar matter is molecular, and stars and planets form in molecular regions. I model the chemistry of interstellar regions in order to develop diagnostics of the physical conditions and of the dynamics of star and planet formation. Recently, I have used models and molecular observations of the central galaxy of the Perseus cluster of galaxies to infer that the ionization rate and heating due to cosmic rays are hundreds of time higher than throughout most of the Milky Way. I have also modeled the chemistry of a protoplanetary accretion disc in which the contribution of the disc to the gravity is important for the dynamics and planet formation.

I have worked on molecular diagnostics of the collapse of objects called dense cores, which are the progenitors of stars. My current interests include the role of dust particles in the non-ideal magnetohydrodynamics controlling the collapse dynamics, including the angular momentum loss. I have dabbled in dusty plasma physics research more generally and have co-authored papers on dusty plasmas in Saturn’s rings and in the terrestrial mesosphere.

Useful links

Angular Momentum in Star Formation
Molecular Astrophysics

Publications

Falle SAEG, Vaidya B, Hartquist TW The interaction of hydrodynamic shocks with self-gravitating clouds Monthly Notices of the Royal Astronomical Society 465 260-268, 2017
DOI:10.1093/mnras/stw2795
View abstract

Burge CA, Van Loo S, Falle SAEG, Hartquist TW Ambipolar diffusion regulated collapse of filaments threaded by perpendicular magnetic fields Astronomy and Astrophysics 596 -, 2016
DOI:10.1051/0004-6361/201629039
View abstract

Havnes O, Hartquist TW Nanodust shedding and its potential influence on dust-related phenomena in the mesosphere Journal of Geophysical Research: Atmospheres 121 12-376, 2016
DOI:10.1002/2016JD025037
View abstract

Burge C, Loo SV, Falle S, Hartquist T Ambipolar-diffusion regulated collapse of filaments., 2016
DOI:10.5518/72

van Dishoeck EF, Hartquist T, Sternberg A Alexander Dalgarno: From atomic and molecular physics to astronomy and aeronomy PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 112 9498-9499, 2015
DOI:10.1073/pnas.1511906112

Havnes O, Pinedo H, La Hoz C, Senior A, Hartquist TW, Rietveld MT, Kosch MJ A comparison of overshoot modelling with observations of polar mesospheric summer echoes at radar frequencies of 56 and 224 MHz Annales Geophysicae 33 737-747, 2015
DOI:10.5194/angeo-33-737-2015
View abstract

Evans MG, Ilee JD, Boley AC, Caselli P, Durisen RH, Hartquist TW, Rawlings JMC Gravitational instabilities in a protosolar-like disc - I. Dynamics and chemistry Monthly Notices of the Royal Astronomical Society 453 1147-1163, 2015
DOI:10.1093/mnras/stv1698
View abstract

Havnes O, Pinedo H, La Hoz C, Senior A, Hartquist TW, Rietveld MT, Kosch MJ ELECTRON HEATING EFFECTS ON POLAR MESOSPHERIC CLOUDS - A COMPARISON BETWEEN OBSERVATIONS AND MODELLING, 2015

Havnes O, Antonsen T, Hartquist TW, Fredriksen T, Plane JMC The Tromsø programme of in situ and sample return studies of mesospheric nanoparticles Journal of Atmospheric and Solar-Terrestrial Physics 127 129-136, 2014
DOI:10.1016/j.jastp.2014.09.010
View abstract

Havnes O, Antonsen T, Hartquist TW, Fredriksen T, Plane JMC The Tromsø programme of in situ and sample return studies of mesospheric nanoparticles Journal of Atmospheric and Solar-Terrestrial Physics 127 129-136, 2014
DOI:10.1016/j.jastp.2014.09.010
View abstract

Aluzas R, Pittard JM, Falle SAEG, Hartquist TW Numerical simulations of a shock interacting with multiple magnetized clouds Monthly Notices of the Royal Astronomical Society 444 971-993, 2014
DOI:10.1093/mnras/stu1501
View abstract

Close JL, Pittard JM, Hartquist TW, Falle SAEG Ram pressure stripping of the hot gaseous haloes of galaxies using the k -ε sub-grid turbulence model Monthly Notices of the Royal Astronomical Society 436 3021-3030, 2013
DOI:10.1093/mnras/stt1788
View abstract

Douglas TA, Caselli P, Ilee JD, Boley AC, Hartquist TW, Durisen RH, Rawlings JMC Simulated observations of young gravitationally unstable protoplanetary discs MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 433 2064-2074, 2013
DOI:10.1093/mnras/stt881

Vaidya B, Hartquist TW, Falle SAEG The responses of magnetically subcritical cores to shocks Monthly Notices of the Royal Astronomical Society 433 1258-1261, 2013
DOI:10.1093/mnras/stt800
View abstract

Van Loo S, Ashmore I, Caselli P, Falle SAEG, Hartquist TW Sputtering in oblique C-type shocks Monthly Notices of the Royal Astronomical Society 428 381-388, 2013
DOI:10.1093/mnras/sts030
View abstract

Van Loo S, Hartquist TW, Falle SAEG Magnetic fields and star formation Astronomy and Geophysics 53 -, 2012
DOI:10.1111/j.1468-4004.2012.53531.x
View abstract

Aluzas R, Pittard JM, Hartquist TW, Falle SAEG, Langton R Numerical simulations of shocks encountering clumpy regions Monthly Notices of the Royal Astronomical Society 425 2212-2227, 2012
DOI:10.1111/j.1365-2966.2012.21598.x
View abstract

Kassa M, Rapp M, Hartquist TW, Havnes O Secondary charging effects due to icy dust particle impacts on rocket payloads Annales Geophysicae 30 433-439, 2012
DOI:10.5194/angeo-30-433-2012
View abstract

Pittard JM, Hartquist TW, Dyson JE, Falle SAEG The turbulent destruction of interstellar clouds ASTROPHYS SPACE SCI 336 239-244, 2011
DOI:10.1007/s10509-010-0526-4

Ilee JD, Boley AC, Caselli P, Durisen RH, Hartquist TW, Rawlings JMC Chemistry in a gravitationally unstable protoplanetary disc MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 417 2950-2961, 2011
DOI:10.1111/j.1365-2966.2011.19455.x

Hartquist TW Star formation: A beginner's guide Astronomy and Geophysics 52 -, 2011
DOI:10.1111/j.1468-4004.2011.52537.x

Dopita MA, Oudmaijer R, Hartquist TW, Williams DA Obituary: John E. Dyson ASTROPHYS SPACE SCI 335 333-336, 2011
DOI:10.1007/s10509-011-0792-9

Bayet E, Viti S, Hartquist TW, Williams DA First observations of CN (2-1), HCO+ (3-2) and C2H (3-2) emission lines in the Perseus cluster: constraints on heating mechanisms in the cluster gas MON NOT R ASTRON SOC 417 627-633, 2011
DOI:10.1111/j.1365-2966.2011.19304.x

Havnes O, Hartquist TW, Kassa M, Morfill GE In-flight calibration of mesospheric rocket plasma probes. Rev Sci Instrum 82 074503-, 2011
DOI:10.1063/1.3611007
View abstract

Bayet E, Williams DA, Hartquist TW, Viti S Chemistry in cosmic ray dominated regions MON NOT R ASTRON SOC 414 1583-1591, 2011
DOI:10.1111/j.1365-2966.2011.18500.x

Bayet E, Viti S, Hartquist TW, Williams DA First observations of CN (2-1), HCO+ (3-2) and C2H (3-2) emission lines in the Perseus cluster: Constraints on heating mechanisms in the cluster gas Monthly Notices of the Royal Astronomical Society -, 2011

Ashmore I, Van Loo S, Caselli P, Falle SAEG, Hartquist TW Transient evolution of C-type shocks in dusty regions of varying density Astronomy and Astrophysics 511 -, 2010
DOI:10.1051/0004-6361/200913277
View abstract

Bayet E, Hartquist TW, Viti S, Williams DA, Bell TA Molecular tracers of filamentary CO emission regions surrounding the central galaxies of clusters Astronomy and Astrophysics 521 -, 2010
DOI:10.1051/0004-6361/200913185
View abstract

Bayet E, Hartquist TW, Viti S, Williams DA, Bell TA Molecular tracers of filamentary CO emission regions surrounding the central galaxies of clusters ASTRON ASTROPHYS 521 -, 2010
DOI:10.1051/0004-6361/200913185

Hartquist TW, Williams DA John Edward Dyson 1941-2010 OBITUARY ASTRON GEOPHYS 51 40-41, 2010

Van Loo S, Falle SAEG, Hartquist TW Shock-triggered formation of magnetically dominated clouds - II. Weak shock-cloud interaction in three dimensions MON NOT R ASTRON SOC 406 1260-1268, 2010
DOI:10.1111/j.1365-2966.2010.16761.x

Pittard JM, Hartquist TW, Falle SAEG The turbulent destruction of clouds - II. Mach number dependence, mass-loss rates and tail formation MON NOT R ASTRON SOC 405 821-838, 2010
DOI:10.1111/j.1365-2966.2010.16504.x

Van Loo S, Falle SAEG, Hartquist TW, Havnes O, Morfill GE Dusty magnetohydrodynamics in star-forming regions J PLASMA PHYS 76 569-578, 2010
DOI:10.1017/S0022377809990894

Ashmore I, Van Loo S, Caselli P, Falle SAEG, Hartquist TW Transient evolution of C-type shocks in dusty regions of varying density ASTRON ASTROPHYS 511 -, 2010
DOI:10.1051/0004-6361/200913277

Hartquist TW, van Loo S, Falle SAEG HOW INTERSTELLAR CHEMISTRY (AND ASTROCHEMISTRY MORE GENERALLY) BECAME USEFUL, 2010

Pittard JM, Hartquist TW, Dyson JE, Falle SAEG The turbulent destruction of interstellar clouds Astrophysics and Space Science 1-6, 2010

Van Loo S, Ashmore I, Caselli P, Falle SAEG, Hartquist TW Time-dependent simulations of steady C-type shocks MON NOT R ASTRON SOC 395 319-327, 2009
DOI:10.1111/j.1365-2966.2009.14515.x

Pittard JM, Falle SAEG, Hartquist TW, Dyson JE The turbulent destruction of clouds - I. A k-epsilon treatment of turbulence in 2D models of adiabatic shock-cloud interactions MON NOT R ASTRON SOC 394 1351-1378, 2009
DOI:10.1111/j.1365-2966.2009.13759.x

Hartquist T, Havnes O, Kassa M Exploring polar mesos pheric summer echoes ASTRON GEOPHYS 50 8-14, 2009
DOI:10.1111/j.1468-4004.2009.50108.x

Hartquist T, Havnes O, Kassa M Exploring polar mesos pheric summer echoes Astronomy and Geophysics 50 -, 2009
DOI:10.1111/j.1468-4004.2009.50108.x
View abstract

Wagner AY, Lee JJ, Raymond JC, Hartquist TW, Falle SAEG A COSMIC-RAY PRECURSOR MODEL FOR A BALMER-DOMINATED SHOCK IN TYCHO'S SUPERNOVA REMNANT ASTROPHYS J 690 1412-1423, 2009
DOI:10.1088/0004-637X/690/2/1412

Falle SAEG, Hartquist TW, van Loo S Numerical Simulations of the Wardle Instability, 2009

Pope ECD, Hartquist TW, Pittard JM Cold gas in the intracluster medium: implications for flow dynamics and powering optical nebulae MON NOT R ASTRON SOC 389 1259-1265, 2008
DOI:10.1111/j.1365-2966.2008.13622.x

Durisen RH, Hartquist T, Pickett MK The formation of fragments at corotation in isothermal protoplanetary disks ASTROPHYS SPACE SCI 317 3-8, 2008
DOI:10.1007/s10509-008-9863-y

Van Loo S, Falle SAEG, Hartquist TW, Barker AJ The effect of ambipolar resistivity on the formation of dense cores ASTRON ASTROPHYS 484 275-280, 2008
DOI:10.1051/0004-6361:200809432

Jimenez-Serra I, Caselli P, Martin-Pintado J, Hartquist TW Parametrization of C-shocks. Evolution of the sputtering of grains ASTRON ASTROPHYS 482 549-559, 2008
DOI:10.1051/0004-6361:20078054

Pope ECD, Pittard JM, Hartquist TW, Falle SAEG The generation of optical emission-line filaments in galaxy clusters MON NOT R ASTRON SOC 385 1779-1791, 2008
DOI:10.1111/j.1365-2966.2008.12963.x

Jimenez-Serra I, Martin-Pintado J, Rodriguez-Franco A, Caselli P, Viti S, Hartquist T Revealing the "fingerprints" of the magnetic precursor of C-shocks ASTROPHYS SPACE SCI 313 159-163, 2008
DOI:10.1007/s10509-007-9645-y

Hartquist TW, Van Loo S, Falle SAEG, Caselli P, Ashmore I Dust in interstellar clouds, evolved stars and supernovae, 2008

Hartquist TW, Dyson JE, Falle SAEG, Pittard JM, Wagner AY Shocks in Multicomponent Astrophysical Media, 2008

Van Loo S, Falle S, Hartquist TW, Moore TJT Shock-triggered formation of magnetically dominated clouds Astronomy and Astrophysics 471 213-218, 2007
DOI:10.1051/0004-6361:20077430

Boley AC, Hartquist TW, Durisen RH, Michael S Erratum: The internal energy for molecular hydrogen in gravitationally unstable protoplanetary disks (Astrophysical Journal (2007) 656 (L89)) Astrophysical Journal 660 -, 2007
DOI:10.1086/518364

Boley AC, Hartquist TW, Durisen RH, Michael S The internal energy for molecular hydrogen in gravitationally unstable protoplanetary disks (vol 656, pg L89, 2007) ASTROPHYS J 660 L175-L175, 2007

Van Loo S, Falle SAEG, Hartquist TW Dense core compression and fragmentation induced by the scattering of hydromagnetic waves MON NOT R ASTRON SOC 376 779-784, 2007
DOI:10.1111/j.1365-2966.2007.11472.x

Boley AC, Hartquist TW, Durisen RH, Michael S The internal energy for molecular hydrogen in gravitationally unstable protoplanetary disks ASTROPHYS J 656 L89-L92, 2007

Wagner A, Falle S, Hartquist TW Two-fluid models of cosmic-ray modified radiative shocks including the effects of an acoustic instability Astronomy and Astrophysics 463 195-201, 2007
DOI:10.1051/0004-6361:20066307

Bell TA, Hartquist TW, Viti S, Williams DA Molecular dark matter in galaxies ASTRON ASTROPHYS 459 805-811, 2006
DOI:10.1051/0004-6361:20065624

Van Loo S, Falle SAEG, Hartquist TW Generation of density inhomogeneities by magnetohydrodynamic waves in two dimensions MON NOT R ASTRON SOC 370 975-980, 2006
DOI:10.1111/j.1365-2966.2006.10524.x

Van Loo S, Falle SAEG, Hartquist TW The generation of dense cores and substructure within them by MHD waves Proceedings of the International Astronomical Union 2 486-, 2006
DOI:10.1017/S1743921307002748
View abstract

Wagner AY, Falle SAEG, Hartquist TW, Pittard JM Two-fluid models of cosmic ray modified radiative shocks ASTRON ASTROPHYS 452 763-771, 2006
DOI:10.1051/0004-6361:20064885

Hartquist TW The effect of dynamics on the chemistry of the interstellar medium, 2006

Falle S, Ager M, Hartquist TW The role of thermal instability in star formation, 2006
View abstract

Viti S, Hartquist TW, Myers PC Chemical telemetry of OH observed to measure interstellar magnetic fields ASTROPHYS SPACE SCI 302 109-115, 2006
DOI:10.1007/s10509-005-9011-x

Biebricher A, Havnes O, Hartquist TW, LaHoz C On the influence of plasma absorption by dust on the PMSE overshoot effect ADV SPACE RES 38 2541-2550, 2006
DOI:10.1016/j.asr.2005.02.061

Havnes O, La Hoz C, Aylward A, Belova E, Hartquist TW, Kosch MJ, Morfill G, Jones GOL, Naesheim LI, Rietveld MT, Rubin-Zuzic M, Sigernes F Observations of the overshoot effect during the 2004 EISCAT PMSE campaign, 2006
View abstract

Havnes O, La Hoz C, Aylward A, Belova E, Hartquist TW, Kosch MJ, Morfill G, Jones GOL, Naesheim LI, Rietveld MT, Rubin-Zuzic M, Sigernes F Observations of the overshoot effect during the 2004 EISCAT PMSE campaign ADV SPACE RES 38 2344-2352, 2006
DOI:10.1016/j.asr.2005.11.004

Biebricher A, Havnes O, Hartquist TW, LaHoz C On the influence of plasma absorption by dust on the PMSE overshoot effect, 2006
DOI:10.1016/j.asr.2005.02.061

Lim AJ, Falle S, Hartquist TW The production of magnetically dominated star-forming regions The Astrophysical Journal 632 L91-L94, 2005
DOI:10.1086/498065

Garrod RT, Williams DA, Hartquist TW, Rawlings JMC, Viti S The chemistry of transient molecular cloud cores (vol 362, pg 749, 2005) MON NOT R ASTRON SOC 362 749-752, 2005
DOI:10.1111/j.1365-2966.2005.09438.x

Garrod RT, Williams DA, Hartquist TW, Rawlings JMC, Viti S Erratum: The chemistry of transient molecular cloud cores (Monthly Notices of the Royal Astronomical Society (2005) 356 (654-664)) Monthly Notices of the Royal Astronomical Society 362 749-752, 2005
DOI:10.1111/j.1365-2966.2005.09438.x

Pittard JM, Dyson JE, Falle S, Hartquist TW Dynamical and pressure structures in winds with multiple embedded evaporating clumps– I. Two-dimensional numerical simulations Monthly Notices of the Royal Astronomical Society. 361 1077-1090, 2005
DOI:10.1111/j.1365-2966.2005.09268.x

Pittard JM, Dobson MS, Durisen RH, Dyson JE, Hartquist TW, O'Brien JT The shocking properties of supersonic flows: Dependence of the thermal overstability on M, alpha, and T-c/T-0 ASTRON ASTROPHYS 438 11-21, 2005
DOI:10.1051/0004-6361:20042260

Lim AJ, Falle SAEG, Hartquist TW The effect of dissipation on the generation of density structure by magnetohydrodynamic waves MON NOT R ASTRON SOC 357 461-470, 2005
DOI:10.1111/j.1365-2966.2004.08565.x

Merrifield M, Hartquist T, Heavens A Forum: What's the point of Aurora? ASTRON GEOPHYS 46 8-8, 2005

Wagner AY, Falle SAEG, Hartquist TW, Pittard JM Cosmic ray moderation of the thermal instability ASTRON ASTROPHYS 430 567-569, 2005
DOI:10.1051/0004-6361:20042138

Lintott CJ, Viti S, Rawlings JMC, Williams DA, Hartquist TW, Caselli P, Zinchenko I, Myers P Molecular abundance ratios as a tracer of accelerated collapse in regions of High Mass Star Formation. The Astrophysical Journal 620 795-799, 2005
DOI:10.1086/427164

Garrod RT, Williams DA, Hartquist TW, Rawlings JMC, Viti S The chemistry of transient dense cores MON NOT R ASTRON SOC 356 654-664, 2005
DOI:10.1111/j.1365-2966.2004.08508.x

Horanyi M, Hartquist TW, Havnes O, Mendis DA, Morfill GE Dusty plasma effects in Saturn's magnetosphere REV GEOPHYS 42 -, 2004
DOI:10.1029/2004RG000151

Pittard JM, Hartquist TW, Ashmore I, Byfield A, Dyson JE, Falle SAEG Mass-loaded spherical accretion flows ASTRON ASTROPHYS 414 399-408, 2004
DOI:10.1051/0004-6361:20034134

Rae JGL, Hartquist TW, Lepp SH, O'Neill PT, Williams DA Grain photoelectric ionisation rates, heating rates, and charge as functions of visual extinction ASTRON ASTROPHYS 413 1-5, 2004
DOI:10.1051/0004-6361:20031505

Hartquist TW, Raymond J Heating and cooling in the ISM, 2004
View abstract

Rae JGL, Hartquist TW, Williams DA Injection of molecules from the surfaces of grains into the gas phase chemistry of an expanding cloud ASTROPHYS SPACE SCI 291 175-182, 2004

Pittard JM, Dyson JE, Falle SAEG, Hartquist TW Supernova remnant evolution in an AGN environment Revista Mexicana de Astronomia y Astrofisica: Serie de Conferencias 15 317-322, 2003
View abstract

Hartquist TW, Havnes O, Morfill GE The effects of charged Astronomy and Geophysics 44 26-30, 2003
View abstract

Hartquist TW, Havnes O, Morfill GE The effects of charged dust on Saturn's rings ASTRON GEOPHYS 44 26-30, 2003

Rae JGL, Green NJB, Hartquist TW, Pilling MJ, Toniazzo T Diffusive grain-surface chemistry involving the atoms and diatomic molecules of two elements ASTRON ASTROPHYS 405 387-396, 2003
DOI:10.1051/0004-6361:20030415

Hartquist T Robert Wilson - Obituary PHYS TODAY 56 77-78, 2003

Pittard JM, Arthur SJ, Dyson JE, Falle SAEG, Hartquist TW, Knight MI, Pexton M The evolution of mass loaded supernova remnants - II. Temperature dependent mass injection rates ASTRON ASTROPHYS 401 1027-1038, 2003
DOI:10.1051/0004-6361:20030157

Pittard JM, Hartquist TW, Ashmore I The thermal stability of mass-loaded flows Astronomy and Astrophysics 408 813-816, 2003
DOI:10.1051/0004-6361:20030993

Hartquist TW, Havnes O Mach cones and magnetic forces in Saturn's rings JETP Letters 78 97-98, 2003
DOI:10.1134/1.1615538

Hartquist TW David Arnold Williams Astrophysics and Space Science 285 613-617, 2003
DOI:10.1023/A:1026188605922

Pittard JM, Dyson JE, Falle S, Hartquist TW The formation of broad emission line regions in supernova-QSO wind interactions - II. 2D calculations Astronomy and Astrophysics 408 79-94, 2003
DOI:10.1051/0004-6361:20030767

Hartquist TW Dynamical molecular regions in interstellar clouds ASTROPHYS SPACE SCI 285 717-724, 2003

Hartquist TW, Pittard JM Molecules in the cosmos - A volume honouring David A. Williams ASTROPHYS SPACE SCI 285 611-612, 2003

Hartquist TW, Falle SAEG, Williams DA Solar-system-scale microstructure in the diffuse interstellar medium ASTROPHYS SPACE SCI 288 369-375, 2003

Dyson JE, Arthur SJ, Hartquist TW The evolution of mass loaded supernova remnants - I. Constant and Mach Number dependent mass injection rates ASTRON ASTROPHYS 390 1063-1074, 2002
DOI:10.1051/0004-6361:20020731

Rawlings JMC, Hartquist TW, Williams DA, Falle SAEG Dark cloud chemistry in initially H-rich regions ASTRON ASTROPHYS 391 681-687, 2002
DOI:10.1051/0004-6361:20020825

Havnes O, Hartquist TW, Brattli A, Kroesen GMW, Morfill G Dynamic Mach cone as a diagnostic method in reactive dusty plasma experiments. Phys Rev E Stat Nonlin Soft Matter Phys 65 045403-, 2002
DOI:10.1103/PhysRevE.65.045403
View abstract

Rae JGL, Bell N, Hartquist TW, Pilling MJ, Ruffle DP Reduced networks governing the fractional ionisation in interstellar molecular clouds ASTRON ASTROPHYS 383 738-746, 2002
DOI:10.1051/0004-6361:20011748

Williams RJR, Dyson JE, Hartquist TW, Redman MP MHD ionization fronts, 2002

Dyson JE, Hartquist TW, Redman MP, Williams RJR Hungry winds and jets, 2002

Falle S, Coker RF, Pittard JM, Dyson JE, Hartquist TW Numerical simulations of tail formation in wind interactions with injected material Monthly Notices of the Royal Astronomical Society. 329 670-674, 2002
DOI:10.1046/j.1365-8711.2002.05011.x

Dyson JE, Hartquist TW, Williams RJR, Redman MP The new generation of ionization and recombination fronts, 2002

Ruffle DP, Rae JGL, Pilling MJ, Hartquist TW, Herbst E A network for interstellar CO - The first application of objective reduction techniques in astrochemistry ASTRON ASTROPHYS 381 L13-L16, 2002
DOI:10.1051/0004-6361:20011544

Dyson JE, Williams RJR, Hartquist TW, Pavlakis KG There's life in HII regions yet!, 2002
View abstract

Ruffle D, Rae JGL, Pilling MJ, Hartquist TW, Herbst E A network of interstellar CO - The first application of objective reduction techniques in astrochemistry Astronomy and Astrophysics 381 13-16, 2002
DOI:10.1051/0004-6361:20011544

Falle S, Hartquist TW Generation of density inhomogeneities by magnetohydrodynamic waves Monthly Notices of the Royal Astronomical Society. 329 195-203, 2002
DOI:10.1046/j.1365-8711.2002.04949.x

Durisen RH, Mejia AC, Pickett BK, Hartquist TW Gravitational instabilities in the disks of massive protostars as an explanation for linear distributions of methanol masers ASTROPHYS J 563 L157-L160, 2001

Lim AJ, Hartquist TW, Williams DA Shock strengths in clumps impacted by winds of increasing power MON NOT R ASTRON SOC 326 1110-1114, 2001

Pittard JM, Dyson JE, Falle SAEG, Hartquist TW The formation of broad emission line regions in supernova-QSO wind interactions ASTRON ASTROPHYS 375 827-839, 2001

Pittard JM, Hartquist TW, Dyson JE Self-similar evolution of wind-blown bubbles with mass loading by hydrodynamic ablation ASTRON ASTROPHYS 373 1043-1055, 2001
DOI:10.1051/0004-6361:20010673

Pavlakis K, Williamson RJR, Dyson JE, Falle S, Hartquist TW The modification by diffuse radiation of "cometary tail" formation behind globules Astronomy and Astrophysics 369 263-268, 2001
DOI:10.1051/0004-6361:20010070

Pittard JM, Dyson JE, Hartquist TW Self-similar evolution of wind-blown bubbles with mass-loading by conductive evaporation ASTRON ASTROPHYS 367 1000-1010, 2001

Toniazzo T, Hartquist TW, Durisen RH Magnetized, mass-loaded, rotating accretion flows MON NOT R ASTRON SOC 322 149-165, 2001

Nguyen TK, Hartquist TW, Williams DA Polyatomic species in diffuse cloud and clump interfaces ASTRON ASTROPHYS 366 662-667, 2001

Havnes O, Li F, Hartquist TW, Aslaksen T, Brattli A Mach cones in dusty plasmas in planetary rings and in laboratory experiments PLANET SPACE SCI 49 223-229, 2001

Pittard JM, Dyson JE, Hartquist TW Self-similar evolution of remnants with conductively driven mass-loading ASTROPHYS SPACE SCI 278 269-281, 2001

Caselli P, Hartquist TW, Viti S, Williams DA Chemical signatures of shocks in hot cores Astronomy and Astrophysics 370 1017-1025, 2001
DOI:10.1051/0004-6361:20010300

Green NJB, Toniazzo T, Pilling MJ, Ruffle D, Bell N, Hartquist TW A stochastic approach to grain surface chemical kinetics Astronomy and Astrophysics 375 1111-1119, 2001
DOI:10.1051/0004-6361:20010961

Hartquist TW, Viti S, Williams DA Chemical constraints and microstructure in TMC-1 core D Astronomy and Astrophysics 369 605-610, 2001
DOI:10.1051/0004-6361:20010143

des Forets GP, Hartquist TW, Roueff E, Viti S, Williams D Interstellar oxygen chemistry Astronomy and Astrophysics 370 557-569, 2001
DOI:10.1051/0004-6361:20010246

Coker RF, Rae JGL, Hartquist TW Models of wave supported clumps in giant molecular clouds ASTRON ASTROPHYS 360 290-296, 2000

Gwenlan C, Ruffle DP, Viti S, Hartquist TW, Williams DA HC3N and the ages of dense cores ASTRON ASTROPHYS 354 1127-1133, 2000

Hartquist TW, Dyson JE, Williams RJR, Falle SAEG Some recent results on MHD shocks and winds, 2000

Dyson JE, Hartquist TW, Redman MP, Williams RJR The fine structures of planetary nebulae, 2000

Nguyen TK, Hartquist TW, Williams DA Bistability and temperature effects in mixing layers between molecular and ionized regions ASTROPHYS SPACE SCI 271 171-179, 2000

Williams RJR, Hartquist TW, Dyson JE Magnetized Ionization Fronts 2. Jump Conditions for Oblique Magnetization Monthly Notices of the Royal Astronomical Society. 314 315-323, 2000

Rae JGL, Hartquist TW, Morfill GE Ambipolar diffusion and the detectability of recombination emission from protostellar disks ASTRON ASTROPHYS 351 192-194, 1999

Ruffle DP, Hartquist TW, Caselli P, Williams DA The sulphur depletion problem MON NOT R ASTRON SOC 306 691-695, 1999

Williams DA, Hartquist TW The chemistry of star-forming regions ACCOUNTS CHEM RES 32 334-341, 1999

Ruffle DP, Hartquist TW, Rawlings JMC, Williams DA Ionization structure and a critical visual extinction for turbulent supported clumps ASTRON ASTROPHYS 334 678-684, 1998

Redman MP, Williams RJR, Dyson JE, Hartquist TW, Fernandez BR Magnetic ionization fronts - I. Parallel magnetic fields ASTRON ASTROPHYS 331 1099-1102, 1998

Pilipp W, Hartquist TW, Morfill GE, Levy EH Chondrule Formation by Lightning in the Protosolar Nebula? Astronomy and Astrophysics 331 121-146, 1998

Berry DL, Hartquist TW, Dyson JE The tails of externally illuminated young stellar objects in the Orion Nebula, 1998

Williams RJR, Dyson JE, Hartquist TW The Strengths of Termination Shocks in Magnetized Mass-loaded Flows Astronomy and Astrophysics 344 675-680, 1998

Ruffle DP, Hartquist TW, Caselli P, Rawlings JMC, Williams DA Selective depletions and the abundances of molecules used to study star formation ASTROPHYS SPACE SCI 262 177-185, 1998

Hartquist TW, Williams DA The Molecular Astrophysics of Stars and Galaxies, 1998

Ruffle DP, Hartquist TW, Taylor SD, Williams DA Cyanopolyynes as indicators of late-time chemistry and depletion in star-forming regions MON NOT R ASTRON SOC 291 235-240, 1997

Rawlings JMC, Hartquist TW Molecular diagnostics of diffusive boundary layers ASTROPHYS J 487 672-688, 1997

Hartquist TW, Dyson JE, Williams RJR Mass injection rates due to supernovae and cloud evaporation in starburst superwinds ASTROPHYS J 482 182-185, 1997

Caselli P, Hartquist TW, Havnes O Grain-grain collisions and sputtering in oblique C-type shocks ASTRON ASTROPHYS 322 296-301, 1997

Hartquist TW, Dyson JE Low-mass versus high-mass star formation, 1997

Hartquist TW, Pilipp W, Havnes O Dusty plasmas in interstellar clouds and star forming regions ASTROPHYS SPACE SCI 246 243-289, 1997

Dyson JE, Hartquist TW The Origin of Strong Magnetic Fields in Circumstellar SiO Masers Astronomy and Astrophysics 319 589-592, 1997

Williams DA, Hartquist TW, Caselli P A comment on 'Chemical evolution in circumstellar structure of B5 IRS1' by Kelly, Macdonald& Millar Monthly Notices of the Royal Astronomical Society 282 900-902, 1996
View abstract

Williams DA, Hartquist TW, Caselli P Chemical evolution in circumstellar structure of B5 IRS1 - Comment MON NOT R ASTRON SOC 282 900-902, 1996

Havnes O, Naesheim LI, Hartquist TW, Morfill GE, Melandso F, Schleicher B, Troim J, Blix T, Thrane E Meter-scale variations of the charge carried by mesospheric dust PLANET SPACE SCI 44 1191-1194, 1996

Hartquist TW, Williams DA, Caselli P Comments on some possible models of TMC-1 ASTROPHYS SPACE SCI 238 303-308, 1996

Hartquist TW, Dalgarno A Molecular diagnostics of the interstellar medium and star forming regions ASTROPHYS SPACE SCI 237 267-298, 1996

Havnes O, Li F, Melandso F, Aslaksen T, Hartquist TW, Morfill GE, Nitter T, Tsytovich V Diagnostic of dusty plasma conditions by the observation of Mach cones caused by dust acoustic waves, 1996

Willis AJ, Hartquist TW Sir Robert Wilson, CBE, FRS ASTROPHYS SPACE SCI 237 3-9, 1996

Hartquist TW, Dyson JE, Williams RJR Wide intermediate scale structures in mass-loaded flows ASTROPHYS SPACE SCI 235 165-168, 1996

Hartquist TW, Dyson JE Flows in clumpy planetary nebulae, 1996

Hartquist TW, Havnes O Energy deposition due to the dissipation of dust-acoustic waves ASTROPHYS SPACE SCI 240 235-239, 1996

Hartquist TW Multifluid models of shocks in magnetized interstellar molecular clouds, 1995

Rawlings JMC, Hartquist TW Molecular diagnostics of diffusive boundary layers, 1995

HARTQUIST TW, DURISEN RH, DYSON JE, RAWLINGS JMC, WILLIAMS DA, WILLIAMS RJR CAN DUST FORMATION IN EVOLVED STARS BE SUPPRESSED NEAR ACTIVE GALACTIC NUCLEI ASTROPHYS J 453 77-82, 1995

WILLIAMS RJR, HARTQUIST TW, DYSON JE THE WEAKENING OF THE TERMINATION SHOCKS OF ISOTHERMAL WINDS BY MASS LOADING ASTROPHYS J 446 759-765, 1995

HAVNES O, ASLAKSEN T, HARTQUIST TW, LI F, MELANDSO F, MORFILL GE, NITTER T PROBING THE PROPERTIES OF PLANETARY RING DUST BY THE OBSERVATION OF MACH CONES J GEOPHYS RES 100 1731-1734, 1995

DYSON JE, HARTQUIST TW, MALONE MT, TAYLOR SD Boundary layers and highly supersonic molecular hydrogen flows, 1995

HARTQUIST TW, MENTEN KM, LEPP S, DALGARNO A ON THE SPATIAL COINCIDENCE OF HYDROXYL AND METHANOL MASERS MON NOT R ASTRON SOC 272 184-188, 1995

HOWE DA, HARTQUIST TW, WILLIAMS DA MOLECULES IN DENSE GLOBULES IN PLANETARY-NEBULAE MON NOT R ASTRON SOC 271 811-816, 1994

NEJAD LAM, HARTQUIST TW, WILLIAMS DA MODELS OF DENSE CORES IN TRANSLUCENT REGIONS OF LOW-MASS STAR-FORMATION ASTROPHYS SPACE SCI 220 261-278, 1994

NEJAD LAM, HARTQUIST TW CHEMICAL DIAGNOSTICS OF MAGNETIZED BOUNDARY-LAYERS ASTROPHYS SPACE SCI 220 253-260, 1994

ARTHUR SJ, DYSON JE, HARTQUIST TW MASS-LOADED FLOWS .7. TRANSONIC-FLOWS FROM THE CORES OF PLANETARY-NEBULAE MON NOT R ASTRON SOC 269 1117-1122, 1994

HARTQUIST TW, HAVNES O THE ROLE OF THE MAGNETIC-FIELD IN GAS-DUST COUPLING IN LATE-TYPE STELLAR WINDS ASTROPHYS SPACE SCI 218 23-28, 1994

Havnes O, Nitter T, Tsytovich V, Morfill GE, Hartquist T On the thermophoretic force close to walls in dusty plasma experiments PLASMA SOURCES SCI T 3 448-451, 1994

DYSON JE, HARTQUIST TW MASS-LOADED FLOWS .6. A TALE OF THE GALACTIC-CENTER MON NOT R ASTRON SOC 269 447-450, 1994

ARTHUR SJ, DYSON JE, HARTQUIST TW HOT, FAST PLANETARY-NEBULA HALOES - A NATURAL CONSEQUENCES OF CLUMPY CORES, 1994

HARTQUIST TW, MORFILL GE COSMIC-RAY DIFFUSION AT ENERGIES OF 1-MEV TO 10(5)GEV, 1994

HARTQUIST TW THE GLOBAL STRUCTURE OF THE INTERSTELLAR-MEDIUM, 1994

TAYLOR SD, WILLIAMS DA, HARTQUIST TW MODELING THE CONSTANCY OF X, 1994

Malone MT, Dyson JE, Hartquist TW Highly supersonic molecular flows in wind-clump boundary layers Astrophysics and Space Science 216 143-150, 1994
DOI:10.1007/BF00982484
View abstract

PILIPP W, HARTQUIST TW GRAINS IN SHOCKS IN WEAKLY IONIZED CLOUDS .2. MAGNETIC-FIELD ROTATION IN OBLIQUE SHOCKS MON NOT R ASTRON SOC 267 801-810, 1994

ARTHUR SJ, DYSON JE, HARTQUIST TW MASS LOADED ASTROPHYSICAL FLOWS, 1994

DYSON JE, HARTQUIST TW FLOWS IN CLUMPY CIRCUMSTELLAR MEDIA, 1994

TAYLOR SD, HARTQUIST TW, WILLIAMS DA AB-INITIO DETERMINATION OF THE RATIO OF H-2 COLUMN DENSITY TO CO(J=1-]0) INTEGRATED ANTENNA TEMPERATURE MON NOT R ASTRON SOC 264 929-934, 1993

HARTQUIST TW, RAWLINGS JMC, WILLIAMS DA, DALGARNO A THE REGULATORY AND DIAGNOSTIC ROLES OF CHEMISTRY IN LOW-MASS STAR-FORMATION Q J ROY ASTRON SOC 34 213-233, 1993

DYSON JE, HARTQUIST TW, BIRO S MASS-LOADED ASTRONOMICAL FLOWS .5. TAILS - INTERMEDIATE-SCALE STRUCTURES IN FLOWING CLUMPY MEDIA MON NOT R ASTRON SOC 261 430-434, 1993

ARTHUR SJ, DYSON JE, HARTQUIST TW MASS-LOADED ASTRONOMICAL FLOWS .4. A TIME-DEPENDENT HYDRODYNAMIC MODEL OF AN OBSERVED CLUMPY WIND-BLOWN BUBBLE, RCW 58 MON NOT R ASTRON SOC 261 425-429, 1993

HARTQUIST TW, DYSON JE CLUMPS, THEIR TAILS AND THE GLOBAL SOURCES THEY WAG Q J ROY ASTRON SOC 34 57-71, 1993

WILLIAMS DA, HARTQUIST TW, WHITTET DCB THE ICE THRESHOLD IN MOLECULAR CLOUDS - A DIAGNOSTIC OF THE INFRARED RADIATION-FIELD MON NOT R ASTRON SOC 258 599-601, 1992

HARTQUIST TW, DYSON JE, WILLIAMS DA THE FORMATION OF BROAD MOLECULAR LINE WINGS IN TURBULENT BOUNDARY-LAYERS MON NOT R ASTRON SOC 257 419-422, 1992

HAVNES O, MELANDSO F, LAHOZ C, ASLAKSEN TK, HARTQUIST T CHARGED DUST IN THE EARTHS MESOPAUSE - EFFECTS ON RADAR BACKSCATTER, 1992

RAWLINGS JMC, HARTQUIST TW, MENTEN KM, WILLIAMS DA DIRECT DIAGNOSIS OF INFALL IN COLLAPSING PROTOSTARS .1. THE THEORETICAL IDENTIFICATION OF MOLECULAR-SPECIES WITH BROAD VELOCITY DISTRIBUTIONS MON NOT R ASTRON SOC 255 471-485, 1992

DULEY WW, HARTQUIST TW, STERNBERG A, WAGENBLAST R, WILLIAMS DA CH+ IN SHOCKS, CLOUD INTERCLOUD INTERFACES, AND DENSE PHOTON-DOMINATED REGIONS MON NOT R ASTRON SOC 255 463-470, 1992

PILIPP W, HARTQUIST TW, MORFILL GE LARGE ELECTRIC-FIELDS IN ACOUSTIC-WAVES AND THE STIMULATION OF LIGHTNING DISCHARGES ASTROPHYS J 387 364-371, 1992

DYSON JE, HARTQUIST TW ASTRONOMICAL BUBBLES WITH CLUMPY CORES AND ACCELERATING HALOES ASTROPHYS LETT COMM 28 301-306, 1992

DULEY WW, HARTQUIST TW, STERNBERG A, WAGENBLAST R, WILLIAMS DA CH+ IN SHOCKS, CLOUD-INTERCLOUD INTERFACES, AND DENSE PHOTODISSOCIATION REGIONS IAU SYMP 309-310, 1992

RAWLINGS JMC, HARTQUIST TW, MENTEN KM, WILLIAMS DA INFALL IN COLLAPSING PROTOSTARS, 1992

RAWLINGS JMC, HARTQUIST TW, MENTEN KM, WILLIAMS DA INFALL IN COLLAPSING PROTOSTARS IAU SYMP 357-358, 1992

DULEY WW, HARTQUIST TW, STERNBERG A, WAGENBLAST R, WILLIAMS DA CH+ IN SHOCKS, CLOUD-INTERCLOUD INTERFACES, AND DENSE PHOTODISSOCIATION REGIONS, 1992

WILLIAMS DA, HARTQUIST TW HEILES CLOUD-2 AND TMC-1 - A CHEMICAL REINTERPRETATION MON NOT R ASTRON SOC 251 351-355, 1991

HARTQUIST TW, STERNBERG A PHOTODISSOCIATION-REGION MODELS OF INTERSTELLAR HYDROXYL MASERS MON NOT R ASTRON SOC 248 48-51, 1991

WILLIAMS DA, HARTQUIST TW THE APPLICATIONS OF ASTROCHEMISTRY Q J ROY ASTRON SOC 31 593-605, 1990

HARTQUIST TW, WILLIAMS DA COSMIC-RAY-INDUCED DESORPTION AND HIGH DEPLETIONS IN DENSE CORES MON NOT R ASTRON SOC 247 343-348, 1990

WAGENBLAST R, HARTQUIST TW ULTRAVIOLET PUMPING OF MOLECULAR-HYDROGEN IN DIFFUSE CLOUD SHOCKS MON NOT R ASTRON SOC 244 265-268, 1990

PILIPP W, HARTQUIST TW, HAVNES O GRAINS IN SHOCKS IN WEAKLY IONIZED CLOUDS .1. A ONE FLUID TREATMENT OF GRAIN DYNAMICS MON NOT R ASTRON SOC 243 685-691, 1990

CHARNLEY SB, DYSON JE, HARTQUIST TW, WILLIAMS DA CHEMICAL EVOLUTION IN MOLECULAR CLUMP STELLAR WIND INTERFACES MON NOT R ASTRON SOC 243 405-412, 1990

DYSON JE, HARTQUIST TW, PETTINI M, SMITH LJ CONDENSATIONS IN THE PLANETARY-NEBULA NGC-7293 - AN ORIGIN IN CIRCUMSTELLAR SIO MASER SPOTS MON NOT R ASTRON SOC 241 625-630, 1989

HARTQUIST TW, WILLIAMS DA ON THE RATIO OF THE AMBIPOLAR DIFFUSION AND DEPLETION TIME-SCALES AND QUIESCENT STAR FORMATION MON NOT R ASTRON SOC 241 417-424, 1989

HAVNES O, HARTQUIST TW, PILIPP W WAVE-PROPAGATION IN DUSTY COOL STELLAR ENVELOPES ASTRON ASTROPHYS 217 L13-L15, 1989

WAGENBLAST R, HARTQUIST TW NON-EQUILIBRIUM LEVEL POPULATIONS OF MOLECULAR-HYDROGEN .2. MODELS OF THE ZETA-OPH CLOUD MON NOT R ASTRON SOC 237 1019-1025, 1989

GOLUB L, HARTQUIST TW, QUILLEN AC COMMENTS ON THE OBSERVABILITY OF CORONAL VARIATIONS SOL PHYS 122 245-261, 1989

HARTQUIST TW CHEMISTRY IN SHOCKS, 1989

CHARNLEY SB, DYSON JE, HARTQUIST TW, WILLIAMS DA CHEMICAL LIMIT-CYCLES FOR MODELS OF A REGION OF LOW-MASS STAR FORMATION MON NOT R ASTRON SOC 235 1257-1271, 1988

SMITH LJ, PETTINI M, DYSON JE, HARTQUIST TW AN OPTICAL STUDY OF THE DYNAMICS OF THE CLUMPY WIND-BLOWN NEBULA RCW-58 MON NOT R ASTRON SOC 234 625-642, 1988

HARTQUIST TW, DYSON JE MASS PICK-UP IN ASTRONOMICAL FLOWS ASTROPHYS SPACE SCI 144 615-627, 1988

CHARNLEY SB, DYSON JE, HARTQUIST TW, WILLIAMS DA MASS LOADED ASTRONOMICAL FLOWS .2. THE CHEMISTRY IN T-TAURI WIND-BLOWN BUBBLES IN DENSE MOLECULAR CLOUDS MON NOT R ASTRON SOC 231 269-284, 1988

WAGENBLAST R, HARTQUIST TW NON-EQUILIBRIUM LEVEL POPULATIONS OF MOLECULAR-HYDROGEN .1. UNIFORM DENSITY, STATIC CLOUDS MON NOT R ASTRON SOC 230 363-375, 1988

MEABURN J, HARTQUIST TW, DYSON JE THE SEALING OF FRAGMENTING SHELLS - EVIDENCE FROM OPTICAL STUDIES OF THE VELA REMNANT MON NOT R ASTRON SOC 230 243-&, 1988

HARTQUIST TW, DYSON JE THE FORMATION OF DISCRETE HIGH-VELOCITY MOLECULAR-FEATURES MON NOT R ASTRON SOC 228 957-961, 1987

BOHRINGER H, HARTQUIST TW STEADY MODELS OF RADIATIVELY MODIFIED CONDUCTIVELY DRIVEN EVAPORATION FROM INTERSTELLAR CLOUDS MON NOT R ASTRON SOC 228 915-931, 1987

DYSON JE, HARTQUIST TW MASS LOADED ASTRONOMICAL FLOWS .3. THE STRUCTURE OF SUPERNOVA-REMNANTS AND THE LOCAL SOFT-X-RAY BACKGROUND MON NOT R ASTRON SOC 228 453-461, 1987

DESFORETS GP, FLOWER DR, HARTQUIST TW, MILLAR TJ THEORETICAL-STUDIES OF INTERSTELLAR MOLECULAR SHOCKS .6. THE FORMATION OF MOLECULES CONTAINING 2 OR 3 CARBON-ATOMS MON NOT R ASTRON SOC 227 993-1011, 1987

PILIPP W, HARTQUIST TW, HAVNES O, MORFILL GE THE EFFECTS OF DUST ON THE PROPAGATION AND DISSIPATION OF ALFVEN WAVES IN INTERSTELLAR CLOUDS ASTROPHYS J 314 341-351, 1987

MOUNTAIN CM, GATLEY I, HARTQUIST TW, LEGGETT SK, SELBY MJ PROTOSTELLAR CANDIDATES IN W75N IAU SYMP 187-187, 1987

HARTQUIST TW CHEMISTRY IN INTERSTELLAR HYDROXYL MASER REGIONS IAU SYMP 297-302, 1987

HARTQUIST TW, MORFILL GE A MODEL OF STATIC COSMIC-RAY SUPPORTED GALACTIC CORONAE ASTROPHYS J 311 518-525, 1986

HARTQUIST TW, DYSON JE, PETTINI M, SMITH LJ MASS-LOADED ASTRONOMICAL FLOWS .1. GENERAL-PRINCIPLES AND THEIR APPLICATION TO RCW-58 MON NOT R ASTRON SOC 221 715-726, 1986

DESFORETS GP, FLOWER DR, HARTQUIST TW, DALGARNO A THEORETICAL-STUDIES OF INTERSTELLAR MOLECULAR SHOCKS .3. THE FORMATION OF CH+ IN DIFFUSE CLOUDS MON NOT R ASTRON SOC 220 801-824, 1986

HARTQUIST TW CHEMISTRY IN INTERSTELLAR FLOWS Q J ROY ASTRON SOC 27 71-82, 1986

FLOWER DR, PINEAUDESFORETS G, HARTQUIST TW THEORETICAL-STUDIES OF INTERSTELLAR MOLECULAR SHOCKS .2. MOLECULAR-HYDROGEN COOLING AND ROTATIONAL LEVEL POPULATIONS MON NOT R ASTRON SOC 218 729-741, 1986

FLOWER DR, DESFORETS GP, HARTQUIST TW THEORETICAL-STUDIES OF INTERSTELLAR MOLECULAR SHOCKS .1. GENERAL FORMULATION AND EFFECTS OF THE ION MOLECULE CHEMISTRY MON NOT R ASTRON SOC 216 775-794, 1985

MOUNTAIN CM, SELBY MJ, ZADROZNY A, HARTQUIST TW MOLECULAR-HYDROGEN EMISSION FROM THE MASER SOURCE W75N(OH) MON NOT R ASTRON SOC 216 P13-P16, 1985

MORFILL GE, HARTQUIST TW CONSTRAINTS ON LOCAL SUPERNOVAE AND AL-26 PRODUCTION FROM COSMIC-RAY VARIATION DATA ASTROPHYS J 297 194-198, 1985

HARTQUIST TW, DYSON JE WHY DO FEW HIGH-REDSHIFT QSO NARROW-LINE ABSORPTION SYSTEMS EXHIBIT MIXED IONIZATION SPECTRA ASTROPHYS J 279 L35-L37, 1984

SMITH LJ, PETTINI M, DYSON JE, HARTQUIST TW THE REMARKABLE KINEMATICS OF THE WR WIND-BLOWN BUBBLE RCW-58 MON NOT R ASTRON SOC 211 679-693, 1984

WILLIAMS DA, HARTQUIST TW ON C-0 AND CO IN DENSE INTERSTELLAR CLOUDS - EVIDENCE THAT CLOUD MATERIAL IS FREQUENTLY SHOCKED MON NOT R ASTRON SOC 210 141-145, 1984

HARTQUIST TW, PETTINI M, TALLANT A ON THE PHOTOPRODUCTION OF TRIPLY IONIZED CARBON AND SILICON IN THE GALACTIC HALO ASTROPHYS J 276 519-523, 1984

HARTQUIST TW, MORFILL GE THE HEATING OF CLOUD HOT PHASE INTERFACE REGIONS BY THE DISSIPATION OF HYDROMAGNETIC-WAVES ASTROPHYS J 287 194-199, 1984

INNES DE, HARTQUIST TW ARE WE IN AN OLD SUPERBUBBLE MON NOT R ASTRON SOC 209 7-13, 1984

HARTQUIST TW HYDROMAGNETIC WAVE HEATING OF THE GALACTIC CORONA MON NOT R ASTRON SOC 203 117-123, 1983

HARTQUIST TW, SNIJDERS MAJ, WEST KA DOUBLY IONIZED ALUMINUM - A DIAGNOSTIC OF COOLING GAS IN THE GALACTIC CORONA MON NOT R ASTRON SOC 203 1183-1186, 1983

HARTQUIST TW THE RELEVANCE OF MOLECULAR OBSERVATIONS TO GAMMA-RAY ASTRONOMY SPACE SCI REV 36 41-49, 1983

DYSON JE, HARTQUIST TW ON THE STRUCTURE OF INTERMEDIATE-VELOCITY AND HIGH-VELOCITY CLOUDS MON NOT R ASTRON SOC 203 1233-1238, 1983

BONE DA, HARTQUIST TW, SANFORD P SOFT-X-RAY DIAGNOSTICS OF THE KINEMATICS OF HIGH-VELOCITY CLOUDS ASTROPHYS SPACE SCI 89 173-176, 1983

HARTQUIST TW A MODEL OF THE GALACTIC CORONA AND THE MAGNETIC-FIELD IN THE HALO OBSERVATORY 103 137-138, 1983

HARTQUIST TW, MORFILL GE EVIDENCE FOR THE STOCHASTIC ACCELERATION OF COSMIC-RAYS IN SUPER-NOVA REMNANTS ASTROPHYS J 266 271-275, 1983

HARTQUIST TW, BLACK JH, DALGARNO A WARM HYDROGEN AT HIGH GALACTIC LATITUDES ASTROPHYS J 259 591-594, 1982

FLOWER DR, GUILLOTEAU S, HARTQUIST TW OH COOLING OF INTER-STELLAR SHOCKS AND MASERS MON NOT R ASTRON SOC 200 P55-P59, 1982

HARTQUIST TW, SNIJDERS MAJ HOT GALACTIC GAS AND NARROW LINE QUASAR ABSORPTION SYSTEMS NATURE 299 783-788, 1982

DALGARNO A, VICTOR GA, HARTQUIST TW THE AURORAL 2145A FEATURE GEOPHYS RES LETT 8 603-605, 1981

HARTQUIST TW, TALLANT A ANALYSIS OF IUE OBSERVATIONS OF THE GALACTIC CORONA AND THE EXISTENCE OF MOLECULAR CLOUDS IN THE HALO MON NOT R ASTRON SOC 196 527-532, 1981

STENHOLM LG, HARTQUIST TW, MORFILL GE STRUCTURE OF MOLECULAR CLOUDS .5. DETAILED MODELS AND OBSERVATIONAL CHARACTERISTICS ASTROPHYS J 249 152-160, 1981

HARTQUIST TW, OPPENHEIMER M, DALGARNO A MOLECULAR DIAGNOSTICS OF INTER-STELLAR SHOCKS ASTROPHYS J 236 182-188, 1980

HARTQUIST TW PROBING THE GRAVITATIONAL-FIELD IN GIANT MOLECULAR CLOUDS MON NOT R ASTRON SOC 191 49-53, 1980

SMITH LJ, HARTQUIST TW IUE OBSERVATIONS OF NV, A DIAGNOSTIC OF HOT INTER-STELLAR GAS MON NOT R ASTRON SOC 192 P73-P77, 1980

HARTQUIST TW, OPPENHEIMER M, ELMEGREEN BG EFFECT OF COSMIC-RAY SCREENING UPON THE STABILITY OF INTER-STELLAR CLOUDS ASTRON ASTROPHYS 75 137-139, 1979

BLACK JH, HARTQUIST TW H-2 LINE EMISSION FROM OH MASER REGIONS ASTROPHYS J 232 L179-L182, 1979

ROSNER R, HARTQUIST TW CORONAE OF ROTATING INTER-STELLAR CLOUDS ASTROPHYS J 231 L83-L86, 1979

HARTQUIST TW COMMENT ON A MECHANISM FOR PUMPING OH MASERS ASTRON ASTROPHYS 77 361-362, 1979

LADA CJ, OPPENHEIMER M, HARTQUIST TW EVIDENCE FOR SHOCK CHEMISTRY IN ORION ASTROPHYS J 226 L153-L156, 1978

HARTQUIST TW PHOTO-IONIZATION CROSS-SECTIONS OF EXCITED NOBLE-GAS ATOMS AND DIMERS J PHYS B-AT MOL OPT 11 2101-2106, 1978

BLACK JH, HARTQUIST TW, DALGARNO A MODELS OF INTER-STELLAR CLOUDS .2. ZETA-PERSEI CLOUD ASTROPHYS J 224 448-452, 1978

HARTQUIST TW, BLACK JH, DALGARNO A COSMIC-RAY IONIZATION AND DEUTERIUM ABUNDANCE MON NOT R ASTRON SOC 185 643-646, 1978

HARTQUIST TW, DOYLE HT, DALGARNO A INTERCLOUD COSMIC-RAY IONIZATION RATE ASTRON ASTROPHYS 68 65-67, 1978

HARTQUIST TW, CAMERON AGW PRE-GALACTIC NUCLEOSYNTHESIS ASTROPHYS SPACE SCI 48 145-158, 1977

HARTQUIST TW MECHANISM FOR HEATING DENSE INTERSTELLAR CLOUDS ASTROPHYS J 217 L45-L46, 1977

HARTQUIST TW SOURCE OF X-RAY BACKGROUND ASTROPHYS J 217 3-5, 1977

WISDOM J, HARTQUIST TW, LANE NF HE(23S) BUBBLE IN LIQUID-HELIUM PHYS REV B 14 4205-4208, 1976

Wisdom J, Hartquist TW, Lane NF He(2S3) bubble in liquid helium Physical Review B 14 4205-4208, 1976
DOI:10.1103/PhysRevB.14.4205
View abstract

Evans MG, Ilee JD, Hartquist TW, Caselli P, Szucs L, Purser SJD, Boley AC, Durisen RH, Rawlings JMC Gravitational instabilities in a portosolar-like disc II: continuum emission and mass estimates Monthly Notices of the Royal Astronomical Society -,
DOI:10.1093/mnras/stx1365
View abstract