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Titolo:
PHOTOMETRY AND SPECTROSCOPY OF THE GRB-970508 OPTICAL COUNTERPART
Autore:
CASTROTIRADO AJ; GOROSABEL J; BENITEZ N; WOLF C; FOCKENBROCK R; MARTINEZGONZALEZ E; KRISTEN H; BROEILS A; PEDERSEN H; GREINER J; COSTA E; FEROCI M; PIRO L; FRONTERA F; NICASTRO L; PALAZZI E; BARTOLINI C; GUARNIERI A; MASETTI N; PICCIONI A; MIGNOLI M; WOLD M; LACY M; BIRKLE K; BROADHURST T; BRANDT S; LUND N;
Indirizzi:
INTA,LAB ASTROFIS ESPACIAL & FIS FUNDAMENTAL MADRID SPAIN INST FIS CANTABRIA SANTANDER SPAIN MAX PLANCK INST ASTRON D-6900 HEIDELBERG GERMANY STOCKHOLM OBSERV SALTSJOBADEN SWEDEN COPENHAGEN UNIV OBSERV DK-1350 COPENHAGEN DENMARK INST ASTROPHYS POTSDAM GERMANY CNR,IST ASTROFIS SPAZIALE I-00044 FRASCATI ITALY UNIV FERRARA,DIPARTIMENTO FIS I-44100 FERRARA ITALY CNR,IST TECNOL & STUDIO RADIAZIONI EXTRATERR I-40126 BOLOGNA ITALY UNIV BOLOGNA,DIPARTIMENTO ASTRON BOLOGNA ITALY OSSERVATORIO ASTRON BOLOGNA BOLOGNA ITALY NUCL & ASTROPHYS LAB OXFORD ENGLAND UNIV CALIF BERKELEY,DEPT ASTRON BERKELEY CA 94720 LOS ALAMOS NATL LAB LOS ALAMOS NM 87545 DANISH SPACE RES INST COPENHAGEN DENMARK
Titolo Testata:
Science
fascicolo: 5353, volume: 279, anno: 1998,
pagine: 1011 - 1014
SICI:
0036-8075(1998)279:5353<1011:PASOTG>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAMMA-RAY BURSTS; VARIABILITY; EMISSION; MODELS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
46
Recensione:
Indirizzi per estratti:
Citazione:
A.J. Castrotirado et al., "PHOTOMETRY AND SPECTROSCOPY OF THE GRB-970508 OPTICAL COUNTERPART", Science, 279(5353), 1998, pp. 1011-1014

Abstract

An optical transient within the error box of the gamma ray burst GRB 970508 was imaged 4 hours after the event. It displayed a strong ultraviolet excess, and reached maximum brightness 2 days later. The optical spectra did not show any emission lines, and no variations on time scales of minutes were observed for 1 hour during the decline phase. According to the fireball and afterglow models, the intensity should rise monotonically before the observed optical maximum, but the data indicate that another physical mechanism may be responsible for the constant phase seen during the first hours after the burst.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/17 alle ore 09:21:00