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
Shocked relativistic magnetohydrodynamic flows with application to pulsar winds
TL;DR: In this article, the time-dependent behavior of a shocked spherically symmetric relativistic fluid with tangential magnetic field is investigated, considering the case where the boundaries of the shocked fluid move at constant velocity so that self-similar solutions exist.
Magnetic shaping of planetary nebulae and other stellar wind bubbles
Roger A. Chevalier,Ding Luo +1 more
TL;DR: In the case of the solar wind, the magnetic field in the wind from a magnetized, rotating star becomes increasingly toroidal with distance from the star, and the strength of magnetic field can be characterized by sigma, the ratio of toroidal magnetic energy density to kinetic energy density in the equatorial plane of the wind as mentioned in this paper.
The Scattered Light Echo of a Supernova
TL;DR: In this paper, a theoretical model of the scattering of SN radiation by a dusty circumstellar envelope is constructed and applied to observational data on SN 1979c and SN 1980k, and the scattered light curves are predicted by Monte Carlo simulation.
The central source in the supernova remnant G127.1 + 0.5
TL;DR: In this paper, the authors present evidence from direct optical observation suggesting that the link between the central source and the supernova remnant is purely circumstantial, and they also show that the long-baseline interferometric measurement by Shaffer et al. showed that the angular size of the central sources is about 0.0005 arcs.
X-ray emission from SN 2012ca: A Type Ia-CSM supernova explosion in a dense surrounding medium
Christopher D. Bochenek,Christopher D. Bochenek,Vikram V. Dwarkadas,Jeffrey M. Silverman,O. D. Fox,Roger A. Chevalier,Nathan Smith,Alexei V. Filippenko,Alexei V. Filippenko +8 more
- 01 Jan 2018
TL;DR: X-ray emission is one of the signposts of circumstellar interaction in supernovae (SNe), but until now, it has been observed only in core-collapse SNe, and late-time X-ray detections of SN 2012ca in Chandra data are reported, ostensibly making it the first SN Ia detected with X-rays.