Observation of the Crab Pulsar and Nebula with the Fermi Large Area Telescope

Journal Article · Fri Mar 26 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3395993· OSTI ID:21367045

Grondin, M -H; Lemoine-Goumard, M ^[1]; Loparco, F ^[2]; Mazziotta, M N ^[3]

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1. Universite de Bordeaux and CNRS/IN2P3, Centre d'Etudes Nucleaires Bordeaux Gradignan, UMR 5797, Gradignan, 33175 (France)
2. Dipartimento di Fisica dell'Universita e del Politecnico di Bari, Via Amendola 173, I-70126, Bari (Italy)
3. Istituto Nazionale di Fisica Nucleare Sezione di Bari, Via Orabona 4, I-70126, Bari (Italy)

The Crab Pulsar and Nebula are the remnants of the explosion of the supernova SN1054, which was observed by Chinese astronomers. Previously detected by EGRET, the Crab Pulsar and Nebula have been extensively observed in the gamma-ray energy band by the Large Area Telescope (LAT) onboard the Fermi satellite. The data collected by the LAT during its early operation stage have allowed a detailed measurement of the fluxes and of the energy spectra of both sources. The pulsar spectrum is consistent with the EGRET measurement in the region below 1 GeV and is well described by a power law with exponential cutoff at a few GeV. The nebula spectrum is well modeled by a sum of two power laws, identified respectively as the falling edge of the synchrotron and the rising edge of the inverse Compton components, and is in agreement with the observations from Earth-based telescopes.

• OSTI ID: 21367045
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1223; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ASTRONOMY
BOSONS
COSMIC GAMMA SOURCES
COSMIC PHOTONS
COSMIC RADIATION
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
DETECTION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY SPECTRA
GAMMA ASTRONOMY
GAMMA DETECTION
GAMMA RADIATION
GEV RANGE
IONIZING RADIATIONS
MASSLESS PARTICLES
NEBULAE
PHOTONS
PULSARS
RADIATION DETECTION
RADIATIONS
SATELLITES
SPECTRA
SUPERNOVA REMNANTS
TELESCOPE COUNTERS