Astronomy and Astrophysics – Astronomy
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005atel..497....1f&link_type=abstract
The Astronomer's Telegram, #497
Astronomy and Astrophysics
Astronomy
8
X-Ray, Gamma Ray, Request For Observations, Agn, Quasars, Transients
Scientific paper
The blazar 3C 454.3 (z = 0.859) has been observed by INTEGRAL as a Target-of-Opportunity for 200 ks, starting on May 15, 2005, at 18:40 UT following the announcement of a bright state at various frequencies (see Balonek, VSNET Alert; Remillard, ATel 484; Trushkin et al., ATel 488). The source was clearly detected by the IBIS/ISGRI instrument in the 20-40 and 40-100 keV energy bands, with a significance of 20 and 15 sigma, respectively.
A Large Collaboration
Di Cocco Guido
Eckert Dominique
Foschini Luca
Gehrels Neil
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