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Type: Journal article
Title: The anomalous early afterglow of GRB 050801
Author: Rykoff, E.
Mangano, V.
Yost, S.
Sari, R.
Aharonian, F.
Akerlof, C.
Ashley, M.
Barthelmy, S.
Burrows, D.
Gehrels, N.
Gogus, E.
Guver, T.
Horns, D.
Kiziloglu, U.
Krimm, H.
McKay, T.
Ozel, M.
Phillips, A.
Quimby, R.
Rowell, G.
et al.
Citation: Astrophysical Journal, 2006; 638(1):L5-L8
Publisher: Univ Chicago Press
Issue Date: 2006
ISSN: 0004-637X
1538-4357
Statement of
Responsibility: 
E. S. Rykoff, V. Mangano, S. A. Yost, R. Sari, F. Aharonian, C. W. Akerlof, M. C. B. Ashley, S. D. Barthelmy, D. N. Burrows, N. Gehrels, E. Göüş, T. Güver, D. Horns, Ü. Kızılolu, H. A. Krimm, T. A. McKay, M. Özel, A. Phillips, R. M. Quimby, G. Rowell, W. Rujopakarn, B. E. Schaefer, D. A. Smith, H. F. Swan, W. T. Vestrand, J. C. Wheeler, J. Wren, and F. Yuan
Abstract: The ROTSE-IIIc telescope at the HESS site, Namibia, obtained the earliest detection of optical emission from a gamma-ray burst (GRB), beginning only 21.8 s from the onset of Swift GRB 050801. The optical light curve does not fade or brighten significantly over the first ∼250 s, after which there is an achromatic break and the light curve declines in typical power-law fashion. The Swift XRT also obtained early observations starting at 69 s after the burst onset. The X-ray light curve shows the same features as the optical light curve. These correlated variations in the early optical and X-ray emission imply a common origin in space and time. This behavior is difficult to reconcile with the standard models of early afterglow emission.
Description: © 2006 The American Astronomical Society. All rights reserved.
RMID: 0020071290
DOI: 10.1086/501007
Appears in Collections:Physics publications

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