Author(s): De Pasquale M., Schady P., P. M. Kuin N., J. Page M., A. Curran P., Zane S., R. Oates S., T. Holland S., A. Breeveld A., Ballet J., Bruel P., M. Casandjian J., Cohen-Tanugi J., Dumora D., Farnier C., J. Fegan S., A. Grenier I., Guillemot L., Horan D., Knödlseder J., Lemoine-Goumard M., Lott B., Nuss E., Parent D., Pelassa V., Piron F., Reposeur T., Starck J.-L., Tibaldo L., Vilchez N.
(Article) Published:
The Astrophysical Journal / The Astrophysical Journal Letters, vol. 709 p.L146-L151 (2010)
Links openAccess full text : 
Ref HAL: in2p3-00460847_v1
Ref Arxiv: 0910.1629
DOI: 10.1088/2041-8205/709/2/L146
Ref. & Cit.: NASA ADS
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119 citations
Abstract:
We present the observations of GRB090510 performed by the Fermi Gamma-Ray Space Telescope and the Swift observatory. This is a bright, short burst that shows an extended emission detected in the GeV range. 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 GRB outflow, poorly known in short bursts. We discuss internal shock and external shock models for the broadband energy emission of this object.
Comments: Comments: Submitted to ApJ Letters. Contact Authors: Massimiliano De Pasquale (mdp@mssl.ucl.ac.uk), Mathew Page (mjp@mssl.ucl.ac.uk), Kenji Toma (toma@astro.psu.edu), Veronique Pelassa (pelassa@lpta.in2p3.fr). Minor change in the authorlist