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
A Spectacular Radio Flare from XRF 050416a at 40 days and Implications for the Nature of X-ray Flashes
Alicia M. Soderberg,Ehud Nakar,Stephen Bradley Cenko,P. B. Cameron,Dale A. Frail,Shrinivas R. Kulkarni,Derek B. Fox,Edo Berger,Edo Berger,Avishay Gal-Yam,Dae-Sik Moon,Paul A. Price,G. E. Anderson,Brian P. Schmidt,Maria Elena Salvo,J. Rich,Arne Rau,Eran O. Ofek,Roger A. Chevalier,Mario Hamuy,Fiona A. Harrison,Pawan Kumar,Andrew MacFadyen,Patrick J. McCarthy,H-S Park,Bruce A. Peterson,Mark M. Phillips,Michael Rauch,Miguel Roth,Stephen A. Shectman +29 more
TL;DR: In this paper, a detailed optical, near-infrared, and radio observations of the X-ray flash 050416a obtained with Palomar and Siding Springs Observatories as well as HST and the VLA were presented.
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EXPANDED VERY LARGE ARRAY OBSERVATIONS OF THE RADIO EVOLUTION OF SN 2011dh
Miriam I. Krauss,Alicia M. Soderberg,Laura Chomiuk,Laura Chomiuk,B. A. Zauderer,Andreas Brunthaler,Andreas Brunthaler,Michael Bietenholz,Roger A. Chevalier,Claes Fransson,Michael P. Rupen +10 more
TL;DR: In this article, the authors report on Expanded Very Large Array observations of the Type IIb supernova 2011dh, performed over the first 100 days of its evolution and spanning 1-40 GHz in frequency.
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Late-Time Optical and UV Spectra of SN 1979C and SN 1980K
Robert A. Fesen,Christopher L. Gerardy,Alexei V. Filippenko,Thomas Matheson,Roger A. Chevalier,Robert P. Kirshner,Brian P. Schmidt,Peter Challis,Claes Fransson,Bruno Leibundgut,Schuyler D. Van Dyk +10 more
TL;DR: A low-dispersion Keck I spectrum of SN 1980K taken in August 1995 and a November 1997 MDM spectrum (t = 17.0 yr) show broad 5500 km s^{-1} emission lines of H\alpha, [O I] 6300,6364 A, and [O II] 7319,7330 A as discussed by the authors.
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Discovery of Outlying, High-Velocity Oxygen-Rich Ejecta in Cassiopeia A
R. A. Fesen,Molly Hammell,Jon A. Morse,Roger A. Chevalier,Kazimierz J. Borkowski,Michael A. Dopita,Christopher L. Gerardy,Stephen S. Lawrence,John C. Raymond,S. van den Bergh +9 more
TL;DR: In this article, the authors identify three main classes of outer ejecta: (1) knots dominated by [N II] 6548,6583 emission; (2) knots dominating by oxygen emission lines especially [O II] 7319,7330; and (3) knots with emission line strengths similar to the strong FMK ejecta commonly seen in the main emission shell.
Type IIb supernova SN 2011dh: Spectra and photometry from the ultraviolet to the near-infrared
G. H. Marion,G. H. Marion,Jozsef Vinko,Jozsef Vinko,Robert P. Kirshner,Ryan J. Foley,Perry Berlind,Allyson Bieryla,Joshua S. Bloom,Michael L. Calkins,Peter Challis,Roger A. Chevalier,Ryan Chornock,Chris Culliton,Jason L. Curtis,Gilbert A. Esquerdo,Mark E. Everett,Emilio E. Falco,Claes Fransson,Andrew S. Friedman,Peter M. Garnavich,Bruno Leibundgut,Samuel Meyer,Nathan Smith,Alicia M. Soderberg,Jesper Sollerman,D. L. Starr,T. Szklenar,K. Takats,K. Takats,J. Craig Wheeler +30 more
TL;DR: In this article, spectroscopic and photometric observations of the Type IIb SN 2011dh obtained between 4 and 34 days after the estimated date of explosion (May 31) were reported.