Interpretation of very high-energy gamma-rays from the direction of the Crab nebula

Details Interpretation of very high-energy gamma-rays from the direction of the Crab nebula Interpretation of very high-energy gamma-rays from the direction of the Crab nebula

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.262...75b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 262, no. 1, p. 75-78.

Astronomy and Astrophysics

Astronomy

3

Crab Nebula, Energetic Particles, Gamma Ray Beams, Nonthermal Radiation, Particle Acceleration, Wave-Particle Interactions, Electron Scattering, Light Curve, Magnetohydrodynamic Waves, Pulsars

Scientific paper

VHE gamma-ray generation through inverse Compton scattering of relativistic electrons on the soft thermal and nonthermal emission of the Crab pulsar is discussed. Inverse Compton scattering of the relativistic electrons and positrons on the thermal emission of the neutron star surface makes a significant contribution to the pulsating TeV gamma rays. Comparison with observations shows that the Crab pulsar can make a contribution to the observed emission. It is shown that, in any model of VHE gamma-ray generation through inverse Compton scattering on nonthermal soft emission, primary electrons or positrons ejected by the Crab pulsar will initiate an electromagnetic cascade. A dozen generations of secondary particles are produced in the cascade. The energy of the secondary particles is a factor of 200 less than the energy of the primary particles. Under these conditions, this mechanism cannot make a contribution to the observed TeV emission from the Crab.

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