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Titolo:
Detection of the optical afterglow of GRB 000630: Implications for dark bursts
Autore:
Fynbo, JU; Jensen, BL; Gorosabel, J; Hjorth, J; Pedersen, H; Moller, P; Abbott, T; Castro-Tirado, AJ; Delgado, D; Greiner, J; Henden, A; Magazzu, A; Masetti, N; Merlino, S; Masegosa, J; Ostensen, R; Palazzi, E; Pian, E; Schwarz, HE; Cline, T; Guidorzi, C; Goldsten, J; Hurley, K; Mazets, E; McClanahan, T; Montanari, E; Starr, R; Trombka, J;
Indirizzi:
Univ Copenhagen, Astron Observ, DK-2100 Copenhagen O, Denmark Univ Copenhagen Copenhagen Denmark O serv, DK-2100 Copenhagen O, Denmark European So Observ, D-85748 Garching, Germany European So Observ Garching Germany D-85748 v, D-85748 Garching, Germany Danish Space Res Inst, DK-2100 Copenhagen O, Denmark Danish Space Res Inst Copenhagen Denmark O DK-2100 Copenhagen O, Denmark Nord Opt Telescope, Santa Cruz La Palma 38700, Spain Nord Opt Telescope Santa Cruz La Palma Spain 38700 La Palma 38700, Spain CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain CSIC Granada SpainE-18080 st Astrofis Andalucia, E-18080 Granada, Spain Stockholm Observ, S-13336 Saltsjobaden, Sweden Stockholm Observ Saltsjobaden Sweden S-13336 -13336 Saltsjobaden, Sweden Inst Astrophys, D-14482 Potsdam, Germany Inst Astrophys Potsdam Germany D-14482 trophys, D-14482 Potsdam, Germany USN Observ, Univ Space Res Assoc, Flagstaff, AZ USA USN Observ Flagstaff AZ USA erv, Univ Space Res Assoc, Flagstaff, AZ USA Telescopio Nazl Galileo, Santa Cruz La Palma, Spain Telescopio Nazl Galileo Santa Cruz La Palma Spain Cruz La Palma, Spain CNR, Ist Tecnol & Studio Radiaz Extraterr, I-40129 Bologna, Italy CNR Bologna Italy I-40129 tudio Radiaz Extraterr, I-40129 Bologna, Italy Univ Tromso, Dept Phys, N-9001 Tromso, Norway Univ Tromso Tromso Norway N-9001 romso, Dept Phys, N-9001 Tromso, Norway NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA NASA Greenbelt MDUSA 20771 ard Space Flight Ctr, Greenbelt, MD 20771 USA Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy Univ Ferrara Ferrara Italy I-44100 partmento Fis, I-44100 Ferrara, Italy Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA Johns Hopkins Univ Laurel MD USA 20723 ppl Phys Lab, Laurel, MD 20723 USA Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 Sci Lab, Berkeley, CA 94720 USA AF Ioffe Physicotech Inst, St Petersburg 194021, Russia AF Ioffe Physicotech Inst St Petersburg Russia 194021 urg 194021, Russia Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA Catholic Univ Amer Washington DC USA 20064 Phys, Washington, DC 20064 USA
Titolo Testata:
ASTRONOMY AND ASTROPHYSICS
fascicolo: 2, volume: 369, anno: 2001,
pagine: 373 - 379
SICI:
0004-6361(200104)369:2<373:DOTOAO>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAMMA-RAY BURST; 28 FEBRUARY 1997; ERROR BOX; EMISSION; SUPERNOVA; GRB-970228;
Keywords:
cosmology : observations; gamma rays : bursts;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Fynbo, JU Univ Copenhagen, Astron Observ, Juliane Maries Vej 30, DK-2100 Copenhagen O, Denmark Univ Copenhagen Juliane Maries Vej 30 Copenhagen Denmark O mark
Citazione:
J.U. Fynbo et al., "Detection of the optical afterglow of GRB 000630: Implications for dark bursts", ASTRON ASTR, 369(2), 2001, pp. 373-379

Abstract

We present the discovery of the optical transient of the long-duration gamma-ray burst GRB 000630. The optical transient was detected with the NordicOptical Telescope 21.1 hours after the burst. At the time of discovery themagnitude of the transient was R = 23.04 +/- 0.08. The transient displayeda power-law decline characterized by a decay slope of alpha = -1.035 +/- 0.097. A deep image obtained 25 days after the burst shows no indication of a contribution from a supernova or a host galaxy at the position of the transient. The closest detected galaxy is a R = 324.68 +/- 0.15 galaxy 2.0 arcsec north of the transient. The magnitudes of the optical afterglows of GRB980329, GRB 980613 and GRB 000630 were all R greater than or similar to 23less than 24 hours from the burst epoch. We discuss the implications of this for our understanding of GRBs without detected optical transients. We conclude that i) based on the gamma-ray: properties of the current sample we cannot conclude that GRBs with no detected OTs belong to another class of GRBs than GRBs with detected OTs and ii) the majority (greater than or similar to 75%) of GRBs for which searches for optical afterglow have been unsuccessful are consistent with no detection if they were similar to bursts like GRP, 000630 at optical wavelengths.

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Documento generato il 18/11/17 alle ore 03:36:12