GRB090510: a short bright and hard GRB detected by Fermi

Journal Article · Fri Mar 26 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3395983· OSTI ID:21367040

Palma, F de ^[1]

---

1. Instituto Nazionale di Fisica Nucleare, Sezione di Bari, 70126 Bari (Italy)

On 2009 May 10, 00:22:59 UT (T{sub 0}) 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 z = 0.903 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.

• OSTI ID: 21367040
• Journal Information: AIP Conference Proceedings, Vol. 1223, Issue 1; Conference: 7. workshop on gamma-ray physics in the LHC era, Assisi (Italy), 7-9 Oct 2009; Other Information: DOI: 10.1063/1.3395983; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
COSMIC GAMMA BURSTS
COSMIC PHOTONS
ENERGY DEPENDENCE
GALAXY CLUSTERS
GAMMA ASTRONOMY
GAMMA DETECTION
MEV RANGE
RED SHIFT
TELESCOPE COUNTERS
X RADIATION
ASTRONOMY
BOSONS
COSMIC RADIATION
DETECTION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
IONIZING RADIATIONS
MASSLESS PARTICLES
PHOTONS
PRIMARY COSMIC RADIATION
RADIATION DETECTION
RADIATIONS