Journal Publications

2013

Paxton B., Cantiello M., Arras P., Bildsten L., Brown E. F., Dotter A., Mankovich C., Montgomery M. H., Stello D., Timmes F. X., Townsend R. H. D., 2013: ‘Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars’, ApJS, submitted (ADS)
Carciofi A. C., Faes D. M., Townsend R. H. D., Bjorkman J. E. , 2013: ‘Polarimetric observations of sigma Orionis E’, ApJL, 766, 9 (ADS)
Petit V., Owocki S. P., Wade G. A., Cohen D. H., Sundqvist J. O., Gagné M., Maíz Apellániz J., Oksala M. E., Bohlender D. A., Rivinius Th., Henrichs H. F., Alecian E., Townsend R. H. D., ud-Doula A., the MiMeS Collaboration , 2013: ‘A Magnetic Confinement vs. Rotation Classification of Massive-Star Magnetospheres’, MNRAS, 429, 398 (ADS)
Rivinius Th., Townsend R. H. D., Kochukhov O., Stefl S., Baade D., Barrera L., Szeifert Th., 2013: ‘Basic parameters and properties of the rapidly rotating magnetic helium strong B star HR7355’, MNRAS, 429, 177 (ADS)
ud-Doula Asif, Sundqvist Jon O., Owocki Stanley P., Petit Veronique, Townsend R. H. D. , 2013: ‘First 3D MHD simulation of a massive-star magnetosphere with application to Hα emission from θ1 Ori C’, MNRAS, 428, 2723 (ADS)

2012

Sundqvist Jon O., ud-Doula Asif, Owocki Stanley P., Townsend R. H. D., Howarth Ian D., Wade Gregg A., 2012: ‘A dynamical magnetosphere model for periodic Halpha emission from the slowly rotating magnetic O star HD 191612’, MNRAS, 423, 21 (ADS)
Sundqvist Jon O., Owocki Stanley P., Cohen David H., Leutenegger Maurice A., Townsend R. H. D., 2012: ‘A generalized porosity formalism for isotropic and anisotropic effective opacity and its effects on X-ray line attenuation in clumped O star winds’, MNRAS, 420, 1553 (ADS)
Wade G. A., Grunhut J., Graefener G., Howarth I. D., Martins F., Petit V., Vink J. S., Bagnulo S., Folsom C. P., Nazé Y., Walborn N. R., Townsend R. H. D., Evans C. J., the MiMeS Collaboration, 2012: ‘The spectral variability and magnetic field characteristics of the Of?p star HD 148937’, MNRAS, 419, 2459 (ADS)
Grunhut J. H., Rivinius Th., Wade G. A., Townsend R. H. D., Marcolino W. L. F., Bohlender D. A., Szeifert Th., Petit V., Matthews J. M., Rowe J. F., Moffat A. F. J., Kallinger T., Kuschnig R., Guenther D. B., Rucinski S. M., Sasselov D., Weiss W. W., 2012: ‘HR 5907: Discovery of the most rapidly rotating magnetic early B-type star by the MiMeS Collaboration’, MNRAS, 419, 1610 (ADS)
Oksala M. E., Wade G. A., Townsend R. H. D., Owocki S. P., Kochukhov O., Neiner C., Alecian E., Grunhut J., the MiMeS Collaboration, 2012: ‘Revisiting the Rigidly Rotating Magnetosphere model for sigma Ori E. I. Observations and Data Analysis’, MNRAS, 419, 959 (ADS)

2011

Alecian E., Kochukhov O., Neiner C., Wade G. A., de Batz B., Henrichs H., Grunhut J. H., Bouret J.-C., Briquet M., Gagne M., Naze Y., Oksala M. E., Rivinius T., Townsend R. H. D., Walborn N. R., Weiss W., the MiMeS Collaboration, 2011: ‘First HARPSpol discoveries of magnetic fields in massive stars’, A&A Letters, 536, 6 (ADS)
Wade G. A., Howarth I. D., Townsend R. H. D., Grunhut J. H., Shultz M., Bouret J. -C., Fullerton A., Marcolino W., Martins F., Nazé Y., ud-Doula A., Walborn N. R., Donati J. -F., the MiMeS Collaboration, 2011: ‘Confirmation of the magnetic oblique rotator model for the Of?p star HD 191612’, MNRAS, in press (ADS)
Povich Matthew S., Townsley Leisa K., Broos Patrick S., Gagné Marc, Babler Brian L., Indebetouw Rémy, Majewski Steven R., Meade Marilyn R., Getman Konstantin V., Robitaille Thomas P., Townsend Richard H. D., 2011: ‘Candidate X-ray-emitting OB Stars in the Carina Nebula Identified Via Infrared Spectral Energy Distributions’, ApJ, 194, 6 (ADS)

2010

Monnier J. D., Townsend R. H. D., Che X., Zhao M., 2010: ‘Rotationally-modulated g-modes in the rapidly-rotating δ Scuti star Rasalhague (α Ophiuchi)’, ApJ, 725, 1192 (ADS) (offprint)
Townsend R. H. D., 2010: ‘Fast Calculation of the Lomb-Scargle Periodogram Using Graphics Processing Units’, ApJS, 191, 247 (ADS) (offprint)
Ignace R., Oskinova L. M., Jardine M., Cassinelli J. P., Cohen D. H., Donati J.-F., Townsend R. H. D., ud-Doula A., 2010: ‘A Multi-Phase Suzaku Study of X-rays from τ Sco’, ApJ, 721, 1412 (ADS) (offprint)
Cohen D. H., Leutenegger M. A., Wollman E. E., Zsargó, J., Hillier D. J., Townsend R. H. D., Owocki S. P., 2010: ‘A mass-loss rate determination for ζ Puppis from the quantitative analysis of X-ray emission line profiles’, MNRAS, 405, 2391 (ADS) (offprint)
Oksala M. E., Wade G. A., Marcolino W. L. F., Grunhut J., Bohlender D., Manset N., Townsend R. H. D., the MiMeS Collaboration, 2010: ‘Discovery of a strong magnetic field in the rapidly rotating B2Vn star HR 7355’, MNRAS Lett., 405, 51 (ADS) (offprint)
Rivnius Th., Szeifert Th., Barrera L., Townsend R. H. D., Štefl S., Baade D., 2010: ‘Magnetic field detection in the B2Vn star HR 7355’, MNRAS Lett., 405, 46 (ADS) (offprint)
Townsend R. H. D., Oksala M. E., Cohen D. H., Owocki S. P., ud-Doula A., 2010: ‘Discovery of Rotational Braking in the Magnetic Helium-Strong Star Sigma Orionis E’, ApJL, 714, 318 (ADS) (offprint)
Lecoanet D., Zweibel E. G., Townsend R. H. D., Huang Y.-M., 2010: ‘Violation of Richardson’s Criterion via Introduction of a Magnetic Field’, ApJ, 712, 1116 (ADS) (offprint)
Harvey-Smith L., Gaensler B. M., Kothes R., Townsend R. H. D., Heald G. H., Ng C.-Y., Green A. J., 2010: ‘Faraday rotation of the supernova remnant G296.5+10.0: Evidence for a Magnetized Progenitor Wind’, ApJ, 712, 1157 (ADS) (offprint)

2009

Grunhut J. H., Wade G. A., Marcolino W. L. F., Petit V., Henrichs H. F., Cohen D. H., Alecian E., Bohlender D., Bouret J.-C., Kochukhov O., Neiner C., St-Louis N., Townsend R. H. D., The MiMeS Collaboration, 2009: ‘Discovery of a magnetic field in the O9 sub-giant star HD 57682 by the MiMeS Collaboration’, MNRAS, 400, 94 (ADS) (offprint)
Owocki S. P., Romero G. E., Townsend R. H. D., Araudo A. T., 2009: ‘Gamma-Ray Variability from Wind Clumping in HMXBS with Jets’, ApJ, 696, 690 (ADS) (offprint)
Townsend R. H. D., 2009: ‘An Exact Integration Scheme for Radiative Cooling in Hydrodynamical Simulations’, ApJS, 181, 391 (ADS) (offprint)
ud-Doula A., Owocki S. P., Townsend R. H. D., 2009: ‘Dynamical simulations of magnetically channelled line-driven stellar winds - III. Angular momentum loss and rotational spin-down’, MNRAS, 392, 1022 (ADS) (offprint)

2008

Townsend R. H. D., 2008: ‘Exploring the photometric signatures of magnetospheres around helium-strong stars’, MNRAS, 389, 559 (ADS) (offprint)
Skinner S. L., Sokal K. R., Cohen D. H., Gagné M., Owocki S. P., Townsend R. H. D., 2008: ‘High-Resolution Chandra X-Ray Imaging and Spectroscopy of the σ Orionis Cluster’, ApJ, 683, 796 (ADS) (offprint)
Rivinius Th., Štefl S., Townsend R. H. D., Baade D., 2008: ‘The most rapidly rotating He-strong emission line star: HR 7355’, A&A, 482, 255 (ADS) (offprint)
ud-Doula A., Owocki S. P., Townsend R. H. D., 2008: ‘Dynamical simulations of magnetically channelled line-driven stellar winds - II. The effects of field-aligned rotation’, MNRAS, 385, 97 (ADS) (offprint)
McSwain M. V., Huang W., Gies, D. R., Grundstrom E. D., Townsend R. H. D., 2008: ‘The B and Be Star Population of NGC 3766’, ApJ, 672, 590 (ADS) (offprint)

2007

Mullan D., MacDonald J., Townsend R. H. D., 2007: ‘Magnetic Cycles in the Sun: Modeling the Changes in Radius, Luminosity, and p-Mode Frequencies’, ApJ, 670, 1420 (ADS) (offprint)
Townsend R. H. D., Owocki S. P., ud-Doula A., 2007: ‘A Rigid-Field Hydrodynamics approach to modelling the magnetospheres of massive stars’, MNRAS, 382, 139 (ADS) (offprint)
Smith N., Townsend R. H. D., 2007: ‘The Structure of the Homunculus. III. Forming a Disk and Bipolar Lobes in a Rotating Surface Explosion’, ApJ, 666, 967 (ADS) (offprint)

2006

Townsend R. H. D., MacDonald J., 2006: ‘Excitation of g modes in Wolf-Rayet stars by a deep opacity bump’, MNRAS, 368, 57 (ADS) (offprint)
ud-Doula A., Townsend R. H. D., Owocki S. P., 2006: ‘Centrifugal Breakout of Magnetically Confined Line-driven Stellar Winds’, ApJL, 640, 191 (ADS) (offprint)

2005

Gagné M., Oksala M. E., Cohen D. H., Tonnesen S. K., ud-Doula A., Owocki S. P., Townsend R. H. D., MacFarlane J. J., 2005: ‘Erratum: ``Chandra HETGS Multiphase Spectroscopy of the Young Magnetic O Star θ1 Orionis C'' (ApJ, 628, 986 [2005])’, ApJ, 634, 712 (ADS) (offprint)
Townsend R. H. D., Owocki S. P., Groote D., 2005: ‘The Rigidly Rotating Magnetosphere of σ Orionis E’, ApJL, 630, 81 (ADS) (offprint)
Townsend R. H. D., 2005: ‘Influence of the Coriolis force on the instability of slowly pulsating B stars’, MNRAS, 360, 465 (ADS) (offprint)
Porter J. M., Townsend R. H. D., 2005: ‘On the Evidence of Disks around Blue Straggler Stars’, ApJL, 623, 129 (ADS) (offprint)
Townsend R. H. D., Owocki S. P., 2005: ‘A rigidly rotating magnetosphere model for circumstellar emission from magnetic OB stars’, MNRAS, 357, 251 (ADS) (offprint)
Townsend R. H. D., 2005: ‘Kappa-mechanism excitation of retrograde mixed modes in rotating B-type stars’, MNRAS, 364, 573 (ADS) (offprint)
Gagné M., Oksala M. E., Cohen D. H., Tonnesen S. K., ud-Doula A., Owocki S. P., Townsend R. H. D., MacFarlane J. J., 2005: ‘Chandra HETGS Multiphase Spectroscopy of the Young Magnetic O Star θ1 Orionis C’, ApJ, 628, 986 (ADS) (offprint)

2004

Ramachandran B., Jeffery C. S., Townsend R. H. D., 2004: ‘Synthetic photometry for non-radial pulsations in subdwarf B stars’, A&A, 428, 209 (ADS) (offprint)
Townsend R. H. D., Owocki S. P., Howarth I. D., 2004: ‘Be-star rotation: how close to critical?’, MNRAS, 350, 189 (ADS) (offprint)

2003

Maintz M., Rivinius Th., Štefl S., Baade D., Wolf B., Townsend R. H. D., 2003: ‘Stellar and circumstellar activity of the Be star omega CMa. III. Multiline non-radial pulsation modeling’, A&A, 411, 181 (ADS) (offprint)
Townsend R. H. D., 2003: ‘Surface modelling of non-radial pulsators: alternative formalisms within the linear approximation’, MNRAS, 343, 863 (ADS) (offprint)
Townsend R. H. D., 2003: ‘A semi-analytical formula for the light variations due to low-frequency g modes in rotating stars’, MNRAS, 343, 125 (ADS) (offprint)
Townsend R. H. D., 2003: ‘Asymptotic expressions for the angular dependence of low-frequency pulsation modes in rotating stars’, MNRAS, 340, 1020 (ADS) (offprint)

2002

Townsend R. H. D., 2002: ‘Photometric modelling of slowly pulsating B stars’, MNRAS, 330, 855 (ADS) (offprint)

2001

Townsend R. H. D., Ivison R. J., Smail I., Blain A. W., Frayer D. T., 2001: ‘Gigamasers: the key to the dust-obscured star formation history of the Universe?’, MNRAS, 328, 17 (ADS) (offprint)
Rivinius Th., Baade D., Štefl S., Townsend R. H. D., Stahl O., Wolf, B., Kaufer A., 2001: ‘Stellar and circumstellar activity of the Be star mu Centauri. III. Multiline nonradial pulsation modeling’, A&A, 369, 1058 (ADS) (offprint)

2000

Townsend R. H. D., 2000: ‘Surface trapping and leakage of low-frequency g modes in rotating early-type stars - II. Global analysis’, MNRAS, 319, 289 (ADS) (offprint)
Townsend R. H. D., 2000: ‘Surface trapping and leakage of low-frequency g modes in rotating early-type stars - I. Qualitative analysis’, MNRAS, 318, 1 (ADS) (offprint)

1999

Townsend R. H. D., 1999: ‘Spatial wavelet analysis of line-profile variations’, MNRAS, 310, 851 (ADS) (offprint)

1998

Howarth I. D., Townsend R. H. D., Clayton M. J., Fullerton A. W., Gies, D. R., Massa, D., Prinja R. K., Reid A. H. N., 1998: ‘Time-dependent structure in ultraviolet absorption lines of the rapid rotators HD 64760 (B0Ib) and HD 93521 (O9.5V)’, MNRAS, 296, 949 (ADS) (offprint)

1997

Townsend R. H. D., 1997: ‘Spectroscopic modelling of non-radial pulsation in rotating early-type stars’, MNRAS, 284, 839 (ADS) (offprint)

Conference Publications

2011

Teitler S. A., Townsend R. H. D., Bard C. M., 2011: ‘A Novel Approach to Solving the Linearized Stellar Pulsation Equations’, in 217th American Astronomical Society Meeting (poster)
Wade G. A., Alecian E., Bohlender D. A., Bouret J. -C., Cohen, D., Duez V., Gagné M., Grunhut J., Henrichs H. F., Hill N., Kochukhov O., Mathis S., Neiner C., Oksala M., Owocki S., Petit V., Shultz M., Rivinius T., Townsend R., Vink J. S., the MiMeS Collaboration, 2011: ‘The MiMeS Project: Overview and Current Status’, in Neiner C., Wade G., Meynet G., Peters G., Proc. IAU Symp. 272: Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits, 118 (ADS) (preprint)
Hill N., Townsend R. H. D., Cohen D. H., Gagné, 2011: ‘Rigid Field Hydrodynamic Simulations of the Magnetosphere of Sigma Orionis E’, in Neiner C., Wade G., Meynet G., Peters G., Proc. IAU Symp. 272: Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits, 194 (ADS) (preprint)
Townsend R. H. D., 2011: ‘Modeling the Winds and Magnetospheres of Massive Stars (invited review)’, in Neiner C., Wade G., Meynet G., Peters G., Proc. IAU Symp. 272: Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits, 148 (ADS) (preprint) (presentation)
Townsend R. H. D., Mast N., 2011: ‘Monte-Carlo Simulations of Linear Polarization in Clumpy OB-Star Winds’, in Neiner C., Wade G., Meynet G., Peters G., Proc. IAU Symp. 272: Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits, 216 (ADS) (preprint) (poster)
Rivinius Th., Wade G., Townsend R. H. D., Shultz M., Grunhut J., Stahl, O., the MiMeS Collaboration, 2011: ‘Magnetism of the He-weak star HR2949’, in Neiner C., Wade G., Meynet G., Peters G., Proc. IAU Symp. 272: Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits, 210 (ADS) (preprint)
Oksala M. E., Wade G. A., Townsend R. H. D, Kochukhov O., Owocki S. P., 2011: ‘Modeling the Magnetosphere of the B2Vp star sigma Ori E’, in Neiner C., Wade G., Meynet G., Peters G., Proc. IAU Symp. 272: Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits, 124 (ADS) (preprint)
Oksala M. E., Wade G. A., Marcolino W. L. F., Grunhut J., Bohlender D. A., Manset N., Townsend R. H. D., the MiMeS Collaboration, 2011: ‘Discovery of a strong magnetic field in the rapidly rotating B2Vn star HR 7355’, in Neiner C., Wade G., Meynet G., Peters G., Proc. IAU Symp. 272: Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits, 204 (ADS) (preprint)
Rivinius Th., Townsend R. H. D., Štefl S., Baade D., 2011: ‘The rapid magnetic rotator HR7355’, in Neiner C., Wade G., Meynet G., Peters G., Proc. IAU Symp. 272: Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits, 130 (ADS) (preprint)
Grunhut J. H., Wade G. A., Rivinius T., Marcolino W. L. F., Townsend R. H. D., the MiMeS Collaboration, 2011: ‘Discovery of the most rapidly-rotating, non-degenerate, magnetic massive star by the MiMeS collaboration’, in Neiner C., Wade G., Meynet G., Peters G., Proc. IAU Symp. 272: Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits, 190 (ADS) (preprint)
Townsend R. H. D., 2011: ‘Modeling Ejecta of Massive Stars’, in Zijlstra A. A., Lykou F., McDonald I., Lagadec E., Asymmetric Planetary Nebulae V, 170 (ADS) (preprint) (presentation)

2010

Rivinius, Th.; Stahl, O.; Stefl, S.; Baade, D.; Townsend, R. H. D.; Barrera, L. , 2010: ‘The (B0+?)+O6 system FN CMa: A case for tidal-pulsational interaction?’, in Neiner C., Wade G., Meynet G., Peters G., Proc. IAU Symp. 272: Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits, in press (ADS)

2009

Townsend R. H. D., 2009: ‘Toward self-consistent angular momentum transport in pulsating massive stars’, in Guzik J., Bradley P., AIP Conf. Proc. 1170: Stellar Pulsation: Challenges for Theory and Observation, 355 (ADS) (preprint)
ud-Doula A., Owocki S. P., Townsend R. H. D., 2009: ‘Angular momentum loss and stellar spin-down in magnetic massive stars’, in Strassmeier K. G., Kosovichev A. G., Beckmann J., Proc. IAU Symposium 259: Cosmic Magnetic Fields: From Planets, to Stars and Galaxies, 423 (ADS) (offprint)

2008

Townsend R. H. D., MacDonald J., 2008: ‘Can Pulsational Instabilities Impact a Massive Star's Rotational Evolution?’, in Bresolin F., Crowther P. A., Puls J., Proc. IAU Symp. 250: Massive Stars as Cosmic Engines, 161 (ADS)
Townsend R. H. D., Cohen D. H., Dessart L., Hubrig S., Nazé Y., Petit V., ud-Doula A., Walborn N. R., 2008: ‘Magnetic Massive Stars’, in Bresolin F., Crowther P. A., Puls J., Proc. IAU Symp. 250: Massive Stars as Cosmic Engines, 577 (ADS)
Townsend R. H. D., 2008: ‘Techniques for simulating radiative transfer through porous media’, in Hamann W.-R., Feldmeier A., Oskinova L., Clumping in hot-star winds: Proceedings of an international workshop held in Potsdam, Germany, 18 – 22 June 2007, 85 (ADS)
Romero G. E., Owocki S. P., Araudo A. T., Townsend R. H. D., Benaglia P., 2008: ‘Using gamma-rays to probe the clumped structure of stellar winds’, in Hamann W.-R., Feldmeier A., Oskinova L., Clumping in hot-star winds: Proceedings of an international workshop held in Potsdam, Germany, 18 – 22 June 2007, 191 (ADS)
Cohen D. H., Leutenegger M. A., Townsend R. H. D., 2008: ‘Quantitative analysis of resolved X-ray emission line profiles of O stars’, in Hamann W.-R., Feldmeier A., Oskinova L., Clumping in hot-star winds: Proceedings of an international workshop held in Potsdam, Germany, 18 – 22 June 2007, 209 (ADS)

2007

Townsend R. H. D., 2007: ‘The Coupling Between Pulsation and Mass Loss in Massive Stars (Invited Review)’, in Stancliffe R. J., Dewi J., Houdek G., Martin R. G., Tout C. A., AIP Conf. Proc. 948: Unsolved Problems in Stellar Physics, 345 (ADS)
Townsend R. H. D., 2007: ‘Kappa-Mechanism Excitation of Retrograde Mixed Modes in B-Type Stars’, in Štefl S., Owocki S. P., Okazaki A. T., ASP Conf. Ser. 361: Active OB-Stars: Laboratories for Stellare and Circumstellar Physics, 512 (ADS)
Vinicius M.-M. F., Townsend R. H. D., Leister N. V., 2007: ‘Determination of Be-star Inclinations from Gravity-Darkened Photospheric Spectra’, in Štefl S., Owocki S. P., Okazaki A. T., ASP Conf. Ser. 361: Active OB-Stars: Laboratories for Stellare and Circumstellar Physics, 518 (ADS)
Townsend R. H. D., Oksala M. E., 2007: ‘New Photometric Observations of σ Ori E’, in Štefl S., Owocki S. P., Okazaki A. T., ASP Conf. Ser. 361: Active OB-Stars: Laboratories for Stellare and Circumstellar Physics, 476 (ADS)
Townsend R. H. D., 2007: ‘σ Ori E: The Archetypal Rigidly Rotating Magnetosphere’, in Štefl S., Owocki S. P., Okazaki A. T., ASP Conf. Ser. 361: Active OB-Stars: Laboratories for Stellare and Circumstellar Physics, 110 (ADS)
Schnerr R. S., Henrichs H. F., Owocki S. P., Ud-Doula A., Townsend, R. H. D., 2007: ‘Magnetic Fields and UV-line Variability in β Cephei’, in Štefl S., Owocki S. P., Okazaki A. T., ASP Conf. Ser. 361: Active OB-Stars: Laboratories for Stellare and Circumstellar Physics, 488 (ADS)

2005

ud-Doula A., Townsend R., Owocki S., 2005: ‘Centrifugal Breakout of Magnetically Confined Line-Driven Stellar Winds’, in Ignace R., Gayley K. G., ASP Conf. Ser. 337: The Nature and Evolution of Disks Around Hot Stars, 319 (ADS) (offprint)
Townsend R., Owocki S., Groote D., 2005: ‘A Rigidly Rotating Magnetosphere Model for the Circumstellar Environments of Magnetic OB Stars’, in Ignace R., Gayley K. G., ASP Conf. Ser. 337: The Nature and Evolution of Disks Around Hot Stars, 314 (ADS) (offprint)