TY - JOUR
T1 - GRB 050117
T2 - Simultaneous gamma-ray and X-ray observations with the swift satellite
AU - Hill, Joanne E.
AU - Morris, David C.
AU - Sakamoto, Takanori
AU - Sato, Goro
AU - Burrows, David N.
AU - Angelini, Lorella
AU - Pagani, Claudio
AU - Moretti, Alberto
AU - Abbey, Antony F.
AU - Barthelmy, Scott
AU - Beardmore, Andrew P.
AU - Biryukov, Vadim V.
AU - Campana, Sergio
AU - Capalbi, Milvia
AU - Cusumano, Giancarlo
AU - Giommi, Paolo
AU - Ibrahimov, Mansur A.
AU - Kennea, Jamie
AU - Kobayashi, Shiho
AU - Ioka, Kunihito
AU - Markwardt, Craig
AU - Mész, Peter
AU - O'Brien, Paul T.
AU - Osborne, Julian P.
AU - Pozanenko, Alexei S.
AU - Perri, Matteo
AU - Rumyantsev, Vasilij V.
AU - Schady, Patricia
AU - Sharapov, Dmitri A.
AU - Tagliaferri, Gianpiero
AU - Zhang, Bing
AU - Chincarini, Guido
AU - Gehrels, Neil
AU - Wells, Alan
AU - Nousek, John A.
PY - 2006/3/1
Y1 - 2006/3/1
N2 - The Swift Gamma-Ray Burst Explorer performed its first autonomous, X-ray follow-up to a newly detected GRB on 2005 January 17, within 193 s of the burst trigger by the Swift Burst Alert Telescope. While the burst was still in progress, the X-Ray Telescope (XRT) obtained a position and an image for an uncataloged X-ray source simultaneously with the gamma-ray observation. The XRT observed flux during the prompt emission was 1.1 × 10-8 ergs cm-2 s-1 in the 0.5-10 keV energy band. The emission in the X-ray band decreased by 3 orders of magnitude within 700 s, following the prompt emission. This is found to be consistent with the gamma-ray decay when extrapolated into the XRT energy band. During the following 6.3 hr, the XRT observed the afterglow in an automated sequence for an additional 947 s, until the burst became fully obscured by the Earth limb. A faint, extremely slowly decaying afterglow, α = -0.21, was detected. Finally, a break in the light curve occurred and the flux decayed with α < -1.2. The X-ray position triggered many follow-up observations: no optical afterglow could be confirmed, although a candidate was identified 3″ from the XRT position.
AB - The Swift Gamma-Ray Burst Explorer performed its first autonomous, X-ray follow-up to a newly detected GRB on 2005 January 17, within 193 s of the burst trigger by the Swift Burst Alert Telescope. While the burst was still in progress, the X-Ray Telescope (XRT) obtained a position and an image for an uncataloged X-ray source simultaneously with the gamma-ray observation. The XRT observed flux during the prompt emission was 1.1 × 10-8 ergs cm-2 s-1 in the 0.5-10 keV energy band. The emission in the X-ray band decreased by 3 orders of magnitude within 700 s, following the prompt emission. This is found to be consistent with the gamma-ray decay when extrapolated into the XRT energy band. During the following 6.3 hr, the XRT observed the afterglow in an automated sequence for an additional 947 s, until the burst became fully obscured by the Earth limb. A faint, extremely slowly decaying afterglow, α = -0.21, was detected. Finally, a break in the light curve occurred and the flux decayed with α < -1.2. The X-ray position triggered many follow-up observations: no optical afterglow could be confirmed, although a candidate was identified 3″ from the XRT position.
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U2 - 10.1086/498443
DO - 10.1086/498443
M3 - Article
AN - SCOPUS:33644992948
SN - 0004-637X
VL - 639
SP - 303
EP - 310
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1 I
ER -