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

Journal Article · Tue Aug 20 00:00:00 EDT 2013 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/773/2/143· OSTI ID:22130964

Chkheidze, N.; Machabeli, G. ^[1]

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1. Centre for Theoretical Astrophysics, ITP, Ilia State University, Tbilisi 0162 (Georgia)

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.

• OSTI ID: 22130964
• Journal Information: Astrophysical Journal, Vol. 773, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

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