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
Hard X-ray Emission Clumps in the gamma-Cygni Supernova Remnant: an INTEGRAL-ISGRI View
A. M. Bykov,A. M. Krassilchtchikov,Yu. A. Uvarov,H. Bloemen,Roger A. Chevalier,M. Yu. Gustov,W. Hermsen,Francois Lebrun,T. A. Lozinskaya,Grégor Rauw,T. V. Smirnova,Steven J. Sturner,Jean-Pierre Swings,Regis Terrier,I. N. Toptygin +14 more
TL;DR: In this paper, the IBIS-ISGRI imager of the International Gamma-Ray Astrophysics Laboratory INTEGRAL was used to obtain images of the galactic supernova remnant G78.2+2.1 (gamma-Cygni) in hard X-ray energy bands from 25 keV to 120 keV.
Coronal emission from the shocked circumstellar ring of SN 1987A
Per Groeningsson,Claes Fransson,Peter Lundqvist,Tanja K. Nymark,Natalia Lundqvist,Roger A. Chevalier,Bruno Leibundgut,Jason Spyromilio +7 more
TL;DR: In this article, high resolution spectra with UVES/VLT of SN 1987A from December 2000 until November 2005 show a number of high ionization lines from gas with velocities of roughly 350 km/s, emerging from the shocked gas formed by the ejecta-ring collision.
Pulsar wind nebulae with thick toroidal structure
TL;DR: In this article, the authors investigated a class of pulsar wind nebulae that show synchrotron emission from a thick toroidal structure and found that the difference is due to the Rayleigh-Taylor instability that operates when the outer boundary of the nebula is accelerating into freely expanding supernova ejecta.
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Pulsar Wind Nebulae with Thick Toroidal Structure
TL;DR: In this paper, the authors investigated a class of pulsar wind nebulae that show synchrotron emission from a thick toroidal structure and found that the difference is due to the Rayleigh-Taylor instability that operates when the outer boundary of the nebula is accelerating into freely expanding supernova ejecta.
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Chandra Observations of SN 2004et and the X-ray Emission of Type IIp Supernovae
TL;DR: In this article, the authors reported the detection of the Type II-plateau supernova SN 2004et in the spiral galaxy NGC 6946, using the Chandra X-Ray Observatory.