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- Martin-Carrillo, A., et al.
(författare)
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INTEGRAL detection and follow-up observations of GRBs 080414 and 080603
- 2008
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Ingår i: Proc. Sci..
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Konferensbidrag (refereegranskat)abstract
- INTEGRAL detected GRB 080414 during an open time observation of the Galactic disk. The long (duration ∼10 s) GRB occurred at an off-axis angle of 11.5 degrees with a peak 20-200 keV flux of 1 ph cm-2 s -1 as reported by [1]. The Watcher robotic telescope started observations of GRB 080414 33 sec post GCN trigger. Initial analysis of the first images shows no new source down to 14 magnitude [2]. The burst location was coincidentally very close (30 arcminutes) to XTE J1810-189, which was active at the time. A common origin has been ruled out. GRB 080603 was detected by INTEGRAL during the Key Programme Observation of the North Ecliptic Pole. The burst occurred at about 3 degrees off-axis with a peak 20-200 keV flux of 0.5 ph cm-2 s-1 [3] and a fluence over the same energy range of ∼10-6 erg cm-2. The GRB was within the JEM-X field of view and is well detected between 3 and 35 keV, with a lightcurve consisting of 2 main pulses of emission. Detailed spectral and temporal analyses of the γ-ray emission from both bursts, along with the X-ray characteristics of GRB 080603 and the results of the search for an optical afterglow of GRB 080414 in the Watcher data are presented.
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