On 2009 May 10, 00:22:59 UT the Fermi Gamma‐ray Burst Monitor (GBM) triggered and located the short and very bright GRB090510. For the first time, this hard GRB, with an Epeak of few MeV, also triggered independently the Fermi Large Area Telescope (LAT). Swift detected this GRB and the accurate position provided by the Swift/UVOT made possible a spectroscopic redshift measurement of with VLT/FORS2. This short GRB exhibits new features for this kind of events such an extra component (power‐law) at high energies and a long lasting (few minutes) emission observed by the LAT. These observations allow the derivation of very important physical parameters such as the minimum value of the bulk Lorentz factor and they put some unprecedent limits on the dependence of the speed of photons on their energy.
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26 March 2010
SCIENCE WITH THE NEW GENERATION OF HIGH ENERGY GAMMA‐RAY EXPERIMENTS: Proceedings of the 7th Workshop on Gamma‐Ray Physics in the LHC Era
7–9 October 2009
Assisi (Italy)
Research Article|
March 26 2010
GRB090510: a short bright and hard GRB detected by Fermi
F. de Palma;
F. de Palma
aInstituto Nazionale di Fisica Nucleare, Sezione di Bari, 70126 Bari, Italy
bDipartimento di Fisica “M.Merlin” dell’Università e del Politecnico di Bari, I‐7026 Bari, Italy
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F. de Palma
a,b
Fermi LAT collaboration
Fermi GBM collaboration
aInstituto Nazionale di Fisica Nucleare, Sezione di Bari, 70126 Bari, Italy
bDipartimento di Fisica “M.Merlin” dell’Università e del Politecnico di Bari, I‐7026 Bari, Italy
AIP Conf. Proc. 1223, 173–182 (2010)
Citation
F. de Palma, Fermi LAT collaboration, Fermi GBM collaboration; GRB090510: a short bright and hard GRB detected by Fermi. AIP Conf. Proc. 26 March 2010; 1223 (1): 173–182. https://doi.org/10.1063/1.3395983
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