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Titolo:
The rapid decay of the optical emission from GRB 980326 and its possible implications
Autore:
Groot, PJ; Galama, TJ; Vreeswijk, PM; Wijers, RAMJ; Pian, E; Palazzi, E; van Paradijs, J; Kouveliotou, C; int Zand, JJM; Heise, J; Robinson, C; Tanvir, N; Lidman, C; Tinney, C; Keane, M; Briggs, M; Hurley, K; Gonzalez, JF; Hall, P; Smith, MG; Covarrubias, R; Jonker, PG; Casares, J; Masetti, N; Frontera, F; Feroci, M; Piro, L; Costa, E; Smith, R; Jones, B; Windridge, D; Bland-Hawthorn, J; Veilleux, S; Garcia, M; Brown, WR; Stanek, KZ; Castro-Tirado, AJ; Gorosabel, J; Greiner, J; Jager, K; Bohm, A; Fricke, KJ;
Indirizzi:
Univndssterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherla Univ Amsterdam Amsterdam Netherlands NL-1098 SJ 8 SJ Amsterdam, Netherla Natlsterdam,cl & High Energy Phys, Ctr High Energy Astrophys, NL-1098 SJ Am Natl Inst Nucl & High Energy Phys Amsterdam Netherlands NL-1098 SJ SJ Am Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England Univ Cambridge Cambridge England CB3 0HA ron, Cambridge CB3 0HA, England CNR, I-40129 Bologna, Italy CNR Bologna Italy I-40129CNR, I-40129 Bologna, Italy Univ Alabama, Dept Phys, Huntsville, AL 35899 USA Univ Alabama HuntsvilleAL USA 35899 Dept Phys, Huntsville, AL 35899 USA Univ Space Res Assoc, Washington, DC USA Univ Space Res Assoc Washington DC USA ace Res Assoc, Washington, DC USA NASA, MSFC, Huntsville, AL 35812 USA NASA Huntsville AL USA 35812NASA, MSFC, Huntsville, AL 35812 USA SRON, Utrecht, Netherlands SRON Utrecht NetherlandsSRON, Utrecht, Netherlands European So Observ, Santiago 19, Chile European So Observ Santiago Chile19 opean So Observ, Santiago 19, Chile Anglo Australian Observ, Epping, NSW 2121, Australia Anglo Australian Observ Epping NSW Australia 2121 ng, NSW 2121, Australia Cerro Tololo Interamer Observ, La Serena, Chile Cerro Tololo Interamer Observ La Serena Chile Observ, La Serena, Chile Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 Sci Lab, Berkeley, CA 94720 USA Univ Toronto, Dept Astron, Toronto, ON M5S 3H8, Canada Univ Toronto Toronto ON Canada M5S 3H8 stron, Toronto, ON M5S 3H8, Canada Inst Astrofis Canarias, Tenerife, Spain Inst Astrofis Canarias Tenerife Spain strofis Canarias, Tenerife, Spain CNR, Ist Astrofis Spaziale, I-00133 Rome, Italy CNR Rome Italy I-00133CNR, Ist Astrofis Spaziale, I-00133 Rome, Italy Univ Wales, Cardiff CF1 3NS, S Glam, Wales Univ Wales Cardiff S Glam Wales CF1 3NS s, Cardiff CF1 3NS, S Glam, Wales Univ Bristol, Bristol, Avon, England Univ Bristol Bristol Avon EnglandUniv Bristol, Bristol, Avon, England Univ Maryland, Dept Astron, College Pk, MD 20742 USA Univ Maryland College Pk MD USA 20742 pt Astron, College Pk, MD 20742 USA Ctr Astrophys, Cambridge, MA 02138 USA Ctr Astrophys Cambridge MA USA 02138 r Astrophys, Cambridge, MA 02138 USA INTA, LAEFF, E-28080 Madrid, Spain INTA Madrid Spain E-28080INTA, LAEFF, E-28080 Madrid, Spain CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain CSIC Granada SpainE-18080 st Astrofis Andalucia, E-18080 Granada, Spain Astrophys Inst Potsdam, D-14482 Potsdam, Germany Astrophys Inst Potsdam Potsdam Germany D-14482 D-14482 Potsdam, Germany Univ Sternwarte Gottingen, D-37083 Gottingen, Germany Univ Sternwarte Gottingen Gottingen Germany D-37083 3 Gottingen, Germany
Titolo Testata:
ASTROPHYSICAL JOURNAL
fascicolo: 2, volume: 502, anno: 1998,
parte:, 2
pagine: L123 - L127
SICI:
0004-637X(19980801)502:2<L123:TRDOTO>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAMMA-RAY BURST; ASTRONOMY SATELLITE; ACCELERATION;
Keywords:
gamma rays : bursts; gamma rays : observations; radiation mechanisms : nonthermal;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
45
Recensione:
Indirizzi per estratti:
Indirizzo: Groot, PJ Univerdam,rdam, Astron Inst Anton Pannekoek, Kruislaan 403, NL-1098 SJ Amst Univ Amsterdam Kruislaan 403 Amsterdam Netherlands NL-1098 SJ t
Citazione:
P.J. Groot et al., "The rapid decay of the optical emission from GRB 980326 and its possible implications", ASTROPHYS J, 502(2), 1998, pp. L123-L127

Abstract

We report the discovery of the optical counterpart to GRB 980326. Its rapid optical decay can be characterized by a power law with exponent -2.10 +/-0.13 and a constant underlying source at R-c = 25.5 +/- 0.5. Its optical colors 2.1 days after the burst imply a spectral slope of -0.66 +/- 0.70. The gamma-ray spectrum as observed with BATSE shows that it is among the 4% softest bursts ever recorded. We argue that the rapid optical decay may be areason for the nondetection of some low-energy afterglows of GRBs.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/11/17 alle ore 03:42:13