Swift and Fermi observations of the early afterglow of the short gamma-ray burst 090510
Journal Article
·
· The Astrophysical Journal. Letters
- Univ. College London (UCL), Surrey (United Kingdom). Mullard Space Science Lab. (MSSL); et al.
Here, we present the observations of GRB090510 performed by the Fermi Gamma-Ray Space Telescope and the Swift observatory. In a GeV range, we detected a bright, short burst that shows an extended emission. Furthermore, its optical emission initially rises, a feature so far observed only in long bursts, while the X-ray flux shows an initial shallow decrease, followed by a steeper decay. This exceptional behavior enables us to investigate the physical properties of the gamma-ray burst outflow, poorly known in short bursts. Here, we discuss internal and external shock models for the broadband energy emission of this object.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- Contributing Organization:
- Fermi LAT Collaboration
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1357586
- Journal Information:
- The Astrophysical Journal. Letters, Vol. 709, Issue 2; ISSN 2041-8205
- Publisher:
- Institute of Physics (IOP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 125 works
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