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
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Broadband Observations of the Afterglow of GRB 000926: Observing the Effect of Inverse Compton Scattering and Evidence for a High-Density Environment
Fiona A. Harrison,S. A. Yost,Ramazan Sari,Edo Berger,T. J. Galama J. Holtzmann,Tim Axelrod,J. S. Bloom,Roger A. Chevalier,Enrico Costa,Alan H. Diercks,S. G. Djorgovski,Dale A. Frail,F. Frontera,K. Hurley,S. R. Kulkarni,Patrick J. McCarthy,L. Piro,Guy G. Pooley,P. A. Price,Daniel E. Reichart,G. R. Ricker D. Shepard,Brian P. Schmidt,Fabian Walter,C. Wheeler +23 more
TL;DR: In this paper, an analysis of Chandra X-ray Observatory observations of this event, along with ground-based optical and IR observations and fit the synthesized afterglow lightcurve using models where collimated ejecta expand into a surrounding medium.
Shock evolution in non-radiative supernova remnants
Xiaping Tang,Roger A. Chevalier +1 more
TL;DR: In this paper, a new analytical approach to derive approximate solutions describing the shock evolution in non-radiative supernova remnants (SNRs) is presented, focusing on the forward shock and contact discontinuity.
The Diversity of Gamma-Ray Bursts and the Surroundings of Massive Stars
TL;DR: In this paper, the authors explore the possibility that all long bursts have massive star progenitors, interacting with either the freely expanding wind of the progenitor or the shocked wind.
Modeling the Hubble Space Telescope Ultraviolet and Optical Spectrum of Spot 1 on the Circumstellar Ring of SN 1987A
C. S. J. Pun,C. S. J. Pun,Eli Michael,Svetozar A. Zhekov,Richard McCray,Peter M. Garnavich,Peter M. Challis,Robert P. Kirshner,E. Baron,David Branch,Roger A. Chevalier,Alexei V. Filippenko,Claes Fransson,Bruno Leibundgut,Peter Lundqvist,Nino Panagia,Mark M. Phillips,Brian P. Schmidt,George Sonneborn,Nicholas B. Suntzeff,Lifan Wang,J. Craig Wheeler +21 more
TL;DR: In this article, the authors report and interpret long-slit observations of the optical and ultraviolet (1150-10270 A) emission line spectra of the rapidly brightening spot 1 on the equatorial ring of SN 1987A between 1997 September and 1999 October (days 3869-4606 after outburst).
A Model for the X-Ray Luminosity of Pulsar Nebulae
TL;DR: In this paper, a one-zone, shocked wind model is developed for the X-ray luminosity of pulsar nebulae, where the electrons and positrons are cooled rapidly by synchrotron radiation and the initial particle spectrum is similar to the Crab Nebula.