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Titolo:
Optical investigations of GRBS 960720 and 970402
Autore:
Hudec, R; Rezek, T; Sarounova, L; Pravec, P; Hroch, F; Castro-Tirado, AJ; Gorosabel, J; Pedersen, H; Wenzel, W; Kroll, P; Metcalfe, L; Palazzi, E;
Indirizzi:
Acad Sci Czech Republ, Inst Astron, CZ-25165 Ondrejov, Czech Republic AcadSci Czech Republ Ondrejov Czech Republic CZ-25165 v, Czech Republic Masaryk Univ, Dept Theoret Phys & Astrophys, Brno, Czech Republic Masaryk Univ Brno Czech Republic Phys & Astrophys, Brno, Czech Republic INTA, LAEFF, Madrid, Spain INTA Madrid SpainINTA, LAEFF, Madrid, Spain Sonneberg Observ, Sonneberg, Germany Sonneberg Observ Sonneberg GermanySonneberg Observ, Sonneberg, Germany Kopenhagen Observ, Copenhagen, Denmark Kopenhagen Observ Copenhagen Denmark nhagen Observ, Copenhagen, Denmark ESA, VILSPA, Madrid, Spain ESA Madrid SpainESA, VILSPA, Madrid, Spain CNR, TESRE, I-40126 Bologna, Italy CNR Bologna Italy I-40126CNR, TESRE, I-40126 Bologna, Italy
Titolo Testata:
ASTROPHYSICAL LETTERS & COMMUNICATIONS
fascicolo: 1-6, volume: 39, anno: 1999,
pagine: 721 - 724
SICI:
0888-6512(1999)39:1-6<721:OIOG9A>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAMMA-RAY BURST;
Keywords:
gamma ray burst sources; optical transients; QSOs;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Hudec, R Acad Sci Czech Republ, Inst Astron, CZ-25165 Ondrejov, Czech Republic Acad Sci Czech Republ Ondrejov Czech Republic CZ-25165 Republic
Citazione:
R. Hudec et al., "Optical investigations of GRBS 960720 and 970402", ASTROPHYS L, 39(1-6), 1999, pp. 721-724

Abstract

We present results of optical investigations of error boxes of GRBs 960720and 970402. For GRB960720, we have investigated numerous archival plates taken at the Sonneberg Observatory to look for any kind of optical activity,especially from the position of radio-loud QSO 4C 49.29. One optical brightening/flare has been found at this position, indicating optical activity of the quasar. Additional observations have been obtained in Ondrejov and are also presented and discussed. The error box of GRB970402 has been also investigated on archival plates at Sonneberg and Bamberg Observatories. Thesedata have been evaluated together with recent deep CCD frames. No optical activity has been found except the variable star BL Cir just at the edge ofthe error box. More details regarding the optical behavior and nature of this object are presented.

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Documento generato il 26/09/17 alle ore 09:10:26