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
Expansion of a Photoionized Stellar Wind
TL;DR: In this paper, the authors studied the effects of stellar winds and photoionization on the preshock flow in planetary nebulae and showed that a weak fast wind can be accelerated by roughly a above the initial slow wind velocity and the shock compression is roughly a factor of 2.
Chandra Observations of Type Ia Supernovae: Upper Limits to the X-Ray Flux of SN 2002bo, SN 2002ic, SN 2005gj, and SN 2005ke
John P. Hughes,John P. Hughes,Nikolai Chugai,Roger A. Chevalier,Peter Lundqvist,Eric M. Schlegel +5 more
TL;DR: In this article, the authors derived a mass loss rate of 2 × 10-5 M☉ yr-1, which is comparable to limits set by the non-detection of Hα lines from other Type Ia supernovae.
Numerical simulations of supernova remnants in turbulent molecular clouds
Dong Zhang,Roger A. Chevalier +1 more
TL;DR: In this article, a series of 3D hydrodynamic simulations to model the interaction between an individual supernova remnant (SNR) and a turbulent MC medium, in order to investigate possible observational evidence for the turbulent structure of MCs.
Spectral and morphological analysis of the remnant of Supernova 1987A with ALMA and ATCA
Giovanna Zanardo,Lister Staveley-Smith,Lister Staveley-Smith,Remy Indebetouw,Remy Indebetouw,Roger A. Chevalier,Mikako Matsuura,Bryan Gaensler,Bryan Gaensler,M. J. Barlow,Claes Fransson,Richard N. Manchester,Maarten Baes,Julia Kamenetzky,Masa Lakicevic,Peter Lundqvist,J. M. Marcaide,J. M. Marcaide,Ivan Marti-Vidal,Margaret Meixner,Margaret Meixner,Chi-Yung Ng,Sangwook Park,George Sonneborn,Jason Spyromilio,Jacco Th. van Loon +25 more
TL;DR: In this paper, a comprehensive spectral and morphological analysis of the remnant of supernova 1987A with the Australia Telescope Compact Array (ATCA) and the Atacama Large Millimeter/submillimeter Array (ALMA) is presented.
The Diversity of Gamma-Ray Burst Afterglows and the Surroundings of Massive Stars
TL;DR: In this article, 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.