Corequake and shock heating model of the 5 March 1979 gamma ray burst

Physics

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Gamma Ray Bursts, Neutron Stars, Shock Heating, Stellar Atmospheres, Collapse, Electron-Positron Pairs, Electrons, Magnetic Fields, Pair Production, Photons, Positron Annihilation, Positrons, Pulses

Scientific paper

Ramaty et al. (1980) have proposed a model to account for the 5 March 1979 gamma ray burst in terms of a neutron star corequake and subsequent shock heating of the neutron star atmosphere. The authors elaborate on this model by examining the overall energetics and characteristics of these shocks, taking into account the e+-e- pair production behind the shock. The effects of a dipole magnetic field in the shock jump conditions are also examined and it is concluded that the uneven heating produced by such a field can account for the temperature difference between pole and equator implied by the pulsating phase of the burst. The overall energetics and distribution of energy between e+-e- pairs and photons appears to be in agreement with observations if this event is at a distance of 55 kpc as implied by its association with the supernova remnant N49 in the Large Magellanic Cloud.

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