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Title: ON THE SPECTRUM OF THE PULSED GAMMA-RAY EMISSION OF THE CRAB PULSAR FROM 10 MeV TO 400 GeV

In the present paper, a self-consistent theory, interpreting VERITAS and the MAGIC observations of the very high-energy pulsed emission from the Crab pulsar, is considered. The photon spectrum between 10 MeV and 400 GeV can be described by two power-law functions with spectral indices of 2.0 and 3.8. The source of the pulsed emission above 10 MeV is assumed to be synchrotron radiation, which is generated near the light cylinder during the quasi-linear stage of the cyclotron instability. The emitting particles are the primary beam electrons with Lorentz factors up to 10{sup 9}. Such high energies of beam particles can be reached due to Landau damping of the Langmuir waves in the light cylinder region.
Authors:
;  [1] ;  [2]
  1. Centre for Theoretical Astrophysics, ITP, Ilia State University, Tbilisi 0162 (Georgia)
  2. Free University of Tbilisi, Tbilisi 0183 (Georgia)
Publication Date:
OSTI Identifier:
22130964
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 773; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CYCLOTRON INSTABILITY; GAMMA RADIATION; GEV RANGE; LANDAU DAMPING; MEV RANGE; PARTICLE BEAMS; PHOTON EMISSION; PHOTONS; PULSARS; PULSES; SPECTRA; SYNCHROTRON RADIATION