Roger A. Chevalier
University of Virginia
288 Papers
3K Citations
Roger A. Chevalier is an academic researcher from University of Virginia. The author has contributed to research in topics: Supernova & Supernova remnant. The author has an hindex of 87, co-authored 284 publications. Previous affiliations of Roger A. Chevalier include Kitt Peak National Observatory & Advanced Technology Center.
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Papers
X-ray, Optical, and Radio Observations of the Type II Supernovae 1999em and 1998S
David Pooley,Walter H. G. Lewin,D. W. Fox,Jon M. Miller,Christina K. Lacey,S. D. Van Dyk,K. W. Weiler,Richard A. Sramek,Alexei V. Filippenko,Douglas C. Leonard,Stefan Immler,Roger A. Chevalier,A. C. Fabian,Claes Fransson,K. Nomoto +14 more
TL;DR: In this article, Chandra X-ray data indicate non-radiative interaction of SN ejecta with a power-law density profile (rho \propto r^{-n} with n ~ 7) with a pre-SN wind with a low mass-loss rate of ~2 \times 10-6} M_sun/yr for a wind velocity of 10 km/sec, in agreement with radio mass loss rate estimates.
115
Observations of the Crab Nebula and its pulsar in the far-ultraviolet and in the optical
Jesper Sollerman,Peter Lundqvist,Don J. Lindler,Roger A. Chevalier,Claes Fransson,Theodore R. Gull,Chun S. J. Pun,George Sonneborn +7 more
TL;DR: In this article, the HST/STIS far-UV observations of the Crab nebula and its pulsar are presented, and the authors adopt a spherically symmetric model to constrain the properties of this.
105
The X-ray Remnant of SN1987A
David N. Burrows,Eli Michael,Una Hwang,Richard McCray,Roger A. Chevalier,Robert Petre,Gordon P. Garmire,Stephen S. Holt,John A. Nousek +8 more
TL;DR: In this article, high-resolution Chandra observations of the remnant of SN1987A in the Large Magellanic Cloud (LMC) have been presented, showing that the X-ray emission is thermal in origin and dominated by highly ionized species of O, Ne, Mg, and Si.
100
Cassiopeia A and its Clumpy Presupernova Wind
TL;DR: In this paper, a model of supernova interaction with a freely expanding stellar wind with a mass loss rate of 3e-5 Msun/yr for a wind velocity of 10 km/s was proposed.
99
The Faint Optical Afterglow and Host Galaxy of GRB 020124: Implications for the Nature of Dark Gamma-Ray Bursts
Edo Berger,Shrinivas R. Kulkarni,J. S. Bloom,P. A. Price,D. W. Fox,Dale A. Frail,Tim Axelrod,Roger A. Chevalier,Edward Colbert,Enrico Costa,S. G. Djorgovski,F. Frontera,Titus Galama,J. P. Halpern,Fiona A. Harrison,Jon A. Holtzman,K. Hurley,Randy A. Kimble,Patrick J. McCarthy,L. Piro,Daniel E. Reichart,George R. Ricker,Ramazan Sari,Brian P. Schmidt,John C Wheeler,R. Vanderspek,S. A. Yost +26 more
TL;DR: In this paper, ground-based optical observations of GRB 020124 starting 1.6 hours after the burst, as well as subsequent Very Large Array (VLA) and Hubble Space Telescope (HST) observations are presented.