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Titolo:
SN 1998bw: The case for a relativistic shock
Autore:
Wieringa, MH; Kulkarni, SR; Frail, DA;
Indirizzi:
Natl Radio Astron Observ, Socorro, NM 87801 USA Natl Radio Astron Observ Socorro NM USA 87801 serv, Socorro, NM 87801 USA CSIRO, Australia Telescope Natl Facil, Epping, NSW 2121, Australia CSIRO Epping NSW Australia 2121 e Natl Facil, Epping, NSW 2121, Australia CALTECH, Div Phys Math & Astron 10524, Pasadena, CA 91125 USA CALTECH Pasadena CA USA 91125 Math & Astron 10524, Pasadena, CA 91125 USA
Titolo Testata:
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
fascicolo: 3, volume: 138, anno: 1999,
pagine: 467 - 468
SICI:
0365-0138(199909)138:3<467:S1TCFA>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAMMA-RAY BURST; 25 APRIL 1998; UNUSUAL SUPERNOVA; RADIO;
Keywords:
gamma-ray : bursts;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
8
Recensione:
Indirizzi per estratti:
Indirizzo: Frail, DA Natl Radio Astron Observ, Socorro, NM 87801 USA Natl Radio Astron Observ Socorro NM USA 87801 rro, NM 87801 USA
Citazione:
M.H. Wieringa et al., "SN 1998bw: The case for a relativistic shock", ASTR AST SS, 138(3), 1999, pp. 467-468

Abstract

SN 1998bw shot to fame by claims of association with GRB 980425. Independent of its presumed association with a GRB, this SN is unusual in its radio properties. A simple interpretation of the unusually bright radio emission leads us to the conclusion that there are two shocks in this SN: a slow moving shock containing most of the ejecta and a relativistic shock (Gamma = 2) which is responsible for the radio emission. This is the first evidence for the existence of relativistic shocks in supernovae. It is quite plausible that this shock may produce high energy emission (at early times and by inverse Compton scattering). As with other supernovae, we expect radio emission at much later times powered primarily by the slow moving ejecta. This expectation has motivated us to continue monitoring this unusual SN.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/08/14 alle ore 16:34:43