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David H. Cohen , Associate Professor (Physics & Astronomy)


Book Chapter


Cohen, D.H. 2008. X-ray emission from O stars. In Massive Stars as Cosmic Engines (IAU S250), edited by F. Bresolin, P.A. Crowther, and J. Puls. Cambridge: Cambridge University Press.
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Cohen, D.H. 2008. X-rays from magnetically channeled winds of OB stars. In Massive Stars as Cosmic Engines (IAU S250), edited by F. Bresolin, P.A. Crowther, and J. Puls. Cambridge: Cambridge University Press.
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Cohen, D.H., M.M. Hanson, R.H.D. Townsend, K.S. Bjorkman, and M. Gagné. 2005. Diagnostics of disks around hot stars. In The Nature and evolution of disks around hot stars (ASP Conference Series vol. 337), edited by R. Ignace and K. Gayley, 59. San Francisco: Astronomical Society of the Pacific.
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Cohen, D.H., M. Gagné, S. Owocki, and A. ud-Doula. 2002. Mass-loss and magnetospheres: X-rays from hot stars and young stellar objects. In X-rays at sharp focus: Chandra science symposium (ASP Conference Series vol. 262), edited by S. Vrtilek, E.M. Schlegel, and L. Kuhi, 31. San Francisco: Astronomical Society of the Pacific.
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Cohen, D. H., J.P. Cassinelli, J.J. MacFarlane, and S.P. Owocki. 2000. EUV/X-ray emission and the thermal and ionization structure of B star winds. In Thermal and ionization aspects of flows from hot stars, edited by H.J.G.L.M. Lamers and A. Sapar, 65-80. San Francisco, CA: Astronomical Society of the Pacific.
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Conference Proceedings


Cohen, D.H., M.A. Leutenegger, and R.H.D. Townsend. 2007. Quantitative analysis of resolved X-ray emission line profiles of O stars. Paper read at International Workshop on Clumping in Hot-Star Winds, June 18-22, 2007, at University of Potsdam, Germany.
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Cohen, D.H., M.A. Leutenegger, S.M. Kahn, S.P. Owocki, and F.B.S. Paerels. 2007. Resonance scattering in the X-ray emission lines profiles of ζ Puppis. Paper read at International Workshop on Clumping in Hot-Star Winds, June 18-22, 2007, at University of Potsdam, Germany.
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Cohen, D.H., R.H. Kramer, and S.P. Owocki. 2002. Analysis of doppler-broadened X-ray emission line profiles from hot stars. Paper read at MSSL Workshop on High-Resolution X-ray Spectroscopy, October 24-25, 2002, at Holmbury St. Mary, UK.
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Journal


Cohen, D.H., M.A. Kuhn '07, M. Gagné, E.L.N. Jensen and N.A. Miller. 2008. Chandra spectroscopy of the hot star β Crucis and the discovery of a pre-main-sequence companion. Monthly Notices of the Royal Astronomical Society 386 (4): 1855-1871.
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Cohen, D.H., M.R. Brown, C.D. Cothran, J. Horwitz '07, and V. Chaplin '07. 2008. Flow dynamics and plasma heating of spheromaks in SSX. Journal of Fusion Energy 27 (1-2): 16-19.
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Cohen, D.H., S.L. Skinner, K.R. Sokal, M. Gagné, S.P. Owocki and R.D. Townsend. 2008. High-resolution Chandra X-ray imaging and spectroscopy of the σ Orionis cluster. Astrophysical Journal 683 (2): 796-812.
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Cohen, D.H., J. Zsargó, D.J. Hillier, J.-C. Bouret, T. Lanz and M.A. Leutenegger. 2008. On the importance of the interclump medium for superionization: O VI formation in the wind of ζ puppis. Astrophysical Journal Letters 685: L000.
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Cohen, D.H., M.A. Leutenegger, F.B.S. Paerels, and S.M. Kahn. 2006. Measurement and analysis of helium-like triplet ratios in the x-ray spectra of O-type stars. The Astrophysical Journal 650 (2): 1096-1110.
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Cohen, D.H. and S.P. Owocki. 2006. The Effect of porosity on x-ray emission-line profiles from hot-star winds. The Astrophysical Journal 648 (1): 565-571.
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Cohen, D.H., M.A. Leutenegger, K.T. Grizzard, C.L. Reed '05, R.H. Kramer '03, and S.P. Owocki. 2006. Wind signatures in the x-ray emission line profiles of the late-O supergiant ζ Orionis. Monthly Notices of the Royal Astronomical Society 368 (4): 1905-1916.
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Cohen, D.H., M. Gagne, M.E. Oksala, S.K. Tonnesen '03, A. ud-Doula, S.P Owocki, R.H.D Townsend, and J.J. MacFarlane. 2005. Chandra HETGS multiphase spectroscopy of the young magnetic O star Θ1 Orionis C. Astrophysical Journal 628 (2): 986-1005.
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Cohen, D.H., O.L. Landen, and J.J. MacFarlane. 2005. Numerical modeling of Hohlraum radiation conditions: Spatial and spectral variations due to sample position, beam pointing, and Hohlraum geometry. Physics of Plasmas 12 (12): 122703.
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Cohen, D.H., M.A. Smith, M.F. Gu, R.D. Robinson, N.R. Evan, and P.G. Schran. 2004. High-resolution Chandra spectroscopy of γ Cassiopeiae (B0.5e). Astrophysical Journal 600 (2): 972-985.
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Cohen, D.H., J.J MacFarlane, P. Jaanimagi, O.L Landen, D.A. Haynes, D.S. Conners '03, K.L. Penrose '04, and N.C. Shupe '05. 2004. Tracer spectroscopy diagnostics of doped ablators in inertial confinement fusion experiments on OMEGA. Physics of Plasmas 11 (5): 2702-2708.
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Cohen, D.H., G.E. de Messičres '04, J.J MacFarlane, N.A. Miller, J.P. Cassinelli, S.P. Owocki, and D.A. Liedahl. 2003. Chandra spectroscopy of τ Scorpii: A narrow-line X-ray spectrum from a hot star. Astrophysical Journal 586 (1): 495-505.
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Cohen, D.H., R.H. Kramer '03, S.K. Tonnesen, S.P. Owocki, A. ud-Doula, and J.J. MacFarlane. 2003. X-ray emission line profile modeling of hot stars. Review of Scientific Instruments 74 (3): 1966-1968.
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Cohen, D.H., R.H. Kramer '03, and S.P. Owocki. 2003. X-ray emission-line profile modeling of O stars: Fitting a spherically symmetric analytic wind-shock model to the Chandra spectrum of ζ Puppis. Astrophysical Journal 592 (1): 532-538.
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Cohen, D.H., J.J MacFarlane, J.E. Bailey, and D.A Liedahl. 2003. X-ray spectral diagnostics of neon photoionization experiments on the Z-machine. Review of Scientific Instruments 74 (3): 1962-1965.
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Cohen, D.H., N.A. Miller, J.P. Cassinelli, W.L. Waldron, and J.J. MacFarlane. 2002. New challenges for wind shock models: The Chandra spectrum of the hot star δ Orionis. Astrophysical Journal 577 (2): 951-960.
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Cohen, D.H., et al. 2002. Radiation science using Z-pinch x rays. Physics of Plasmas 9 (5): 2186-2194.
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Cohen, D.H., J.P. Cassinelli, N.A. Miller, W.L. Waldron, and J.J. MacFarlane. 2001. Chandra Detection of Doppler-shifted X-Ray Line Profiles from the Wind of ζ Puppis (O4 f). Astrophysical Journal 554 (1): L55-L58.
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Cohen, D.H., et al. 2001. Neon photoionization experiments driven by Z-pinch radiation. Journal of Quantitative Spectroscopy and Radiative Transfer 71 (2-6): 157-168.
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Cohen, D.H. and S.P. Owocki. 2001. X-ray line profiles from parameterized emission within an accelerating stellar wind. Astrophysical Journal 559 (2): 1108-1116.
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Cohen, D.H., H. Chung, J.J. MacFarlane, J.E. Bailey, P. Wang, and G.A. Moses. 2000. Statistical fitting analysis of Stark-broadened optically thick Ar II spectra measured in ion beam transport experiments. Journal of Quantitative Spectroscopy and Radiative Transfer 65 (1-3): 135-149.
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