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Titolo:
Decay of the GRB 990123 optical afterglow: Implications for the fireball model
Autore:
Castro-Tirado, AJ; Zapatero-Osorio, MR; Caon, N; Cairos, LM; Hjorth, J; Pedersen, H; Andersen, MI; Gorosabel, J; Bartolini, C; Guarnieri, A; Piccioni, A; Frontera, F; Masetti, N; Palazzi, E; Pian, E; Greiner, J; Hudec, R; Sagar, R; Pandey, AK; Mohan, V; Yadav, RKS; Nilakshi; Bjornsson, G; Jakobsson, P; Burud, I; Courbin, F; Valentini, G; Piersimoni, A; Aceituno, J; Montoya, LM; Pedraz, S; Gredel, R; Claver, CF; Rector, TA; Rhoads, JE; Walter, F; Ott, J; Hippelein, H; Sanchez-Bejar, V; Gutierrez, C; Oscoz, A; Zhu, J; Chen, JS; Zhang, HT; Wei, JY; Zhou, AY; Guziy, S; Shlyapnikov, A; Heise, J; Costa, E; Feroci, M; Piro, L;
Indirizzi:
CSIC, Inst Astrofis Andalucia, Granada, Spain CSIC Granada SpainCSIC, Inst Astrofis Andalucia, Granada, Spain Inst Astrofis Canarias, Tenerife, Spain Inst Astrofis Canarias Tenerife Spain strofis Canarias, Tenerife, Spain Univ Copenhagen, Astron Observ, Copenhagen, Denmark Univ Copenhagen Copenhagen Denmark , Astron Observ, Copenhagen, Denmark Nord Opt Telescope, Tenerife, Spain Nord Opt Telescope Tenerife SpainNord Opt Telescope, Tenerife, Spain INTA, Lab Astrofis Espacial & Fis Fundamental, Madrid, Spain INTA MadridSpain ab Astrofis Espacial & Fis Fundamental, Madrid, Spain Univ Bologna, Dipartimento Astron, Bologna, Italy Univ Bologna Bologna Italy Bologna, Dipartimento Astron, Bologna, Italy Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy Univ Ferrara Ferrara Italy I-44100 artimento Fis, I-44100 Ferrara, Italy CNR, Ist Tecnol & Studio Radiaz Extraterr, Bologna, Italy CNR Bologna Italy Ist Tecnol & Studio Radiaz Extraterr, Bologna, Italy Inst Astrophys, Potsdam, Germany Inst Astrophys Potsdam GermanyInst Astrophys, Potsdam, Germany Astron Inst, CZ-25165 Ondrejov, Czech Republic Astron Inst Ondrejov Czech Republic CZ-25165 65 Ondrejov, Czech Republic Uttar Pradesh State Observ, Naini Tal 263129, India Uttar Pradesh State Observ Naini Tal India 263129 aini Tal 263129, India Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland Univ Iceland ReykjavikIceland IS-107 nst Sci, IS-107 Reykjavik, Iceland Univ Liege, Inst Astrophys & Geophys, B-4000 Liege, Belgium Univ Liege Liege Belgium B-4000 trophys & Geophys, B-4000 Liege, Belgium Osserv Astron V Cerulli, Teramo, Italy Osserv Astron V Cerulli Teramo Italy rv Astron V Cerulli, Teramo, Italy Calar Alto Observ, Almeria, Spain Calar Alto Observ Almeria SpainCalar Alto Observ, Almeria, Spain Kitt Peak Natl Observ, Tucson, AZ 85726 USA Kitt Peak Natl Observ Tucson AZ USA 85726 tl Observ, Tucson, AZ 85726 USA Univ Bonn, Astron Observ, D-5300 Bonn, Germany Univ Bonn Bonn Germany D-5300 Bonn, Astron Observ, D-5300 Bonn, Germany Radio Astron Inst, D-53121 Bonn, Germany Radio Astron Inst Bonn Germany D-53121 stron Inst, D-53121 Bonn, Germany Max Planck Inst Astron, D-6900 Heidelberg, Germany Max Planck Inst AstronHeidelberg Germany D-6900 900 Heidelberg, Germany Chinese Acad Sci, Beijing Astron Observ, Beijing 100080, Peoples R China Chinese Acad Sci Beijing Peoples R China 100080 100080, Peoples R China Nikolaev Univ Observ, UA-327030 Nikolaev, Ukraine Nikolaev Univ Observ Nikolaev Ukraine UA-327030 327030 Nikolaev, Ukraine Nikolaev Astron Observ, Nikolaev Space Res Grp, UA-327030 Nikolaev, Ukraine Nikolaev Astron Observ Nikolaev Ukraine UA-327030 7030 Nikolaev, Ukraine Space Res Org Netherlands, Utrecht, Netherlands Space Res Org NetherlandsUtrecht Netherlands nds, Utrecht, Netherlands CNR, Ist Astrofis Spaziale, I-00044 Frascati, Italy CNR Frascati Italy I-00044 st Astrofis Spaziale, I-00044 Frascati, Italy
Titolo Testata:
SCIENCE
fascicolo: 5410, volume: 283, anno: 1999,
pagine: 2069 - 2073
SICI:
0036-8075(19990326)283:5410<2069:DOTG9O>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAMMA-RAY BURSTS; 28 FEBRUARY 1997; EMISSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
59
Recensione:
Indirizzi per estratti:
Indirizzo: Castro-Tirado, AJ CSIC, Inst Astrofis Andalucia, Granada, Spain CSIC Granada Spain Astrofis Andalucia, Granada, Spain
Citazione:
A.J. Castro-Tirado et al., "Decay of the GRB 990123 optical afterglow: Implications for the fireball model", SCIENCE, 283(5410), 1999, pp. 2069-2073

Abstract

Broad-band (ultraviolet to near-infrared) observations of the intense gamma ray burst GRB 990123 started similar to 8.5 hours after the event and continued until 18 February 1999. When combined with other data, in particularfrom the Robotic Telescope and Transient Source Experiment (ROTSE) and theHubble Space Telescope (HST), evidence emerges for a smoothly declining light curve, suggesting some color dependence that could be related to a cooling break passing the ultraviolet-optical band at about 1 day after the high-energy event. The steeper decline rate seen after 1.5 to 2 days may be evidence for a collimated jet pointing toward the observer.

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Documento generato il 26/09/17 alle ore 09:13:46