500 citations · 3.1k across the 111 of their papers we have counts for
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astro-ph.SR2011★ 42 cited
A generalised porosity formalism for isotropic and anisotropic effective opacity and its effects on X-ray line attenuation in clumped O star winds
Jon O. Sundqvist, Stanley P. Owocki, David H. Cohen +2
We present a generalised formalism for treating the porosity-associated reduction in continuum opacity that occurs when individual clumps in a stochastic medium become optically th…
astro-ph.SR2011★ 47 cited
Chandra X-ray spectroscopy of the very early O supergiant HD 93129A: constraints on wind shocks and the mass-loss rate
David H. Cohen, Marc Gagné, Maurice A. Leutenegger +5
We present analysis of both the resolved X-ray emission line profiles and the broadband X-ray spectrum of the O2 If* star HD 93129A, measured with the Chandra HETGS. This star is a…