High Energy Emission from Magnetar Due to Giant Flare
- 1 Department of Physics, Gauhati University, Guwahati, India
- 2 Department of Physics, Gauhati University, Guwahati, India
Abstract
We propose a theoretical model for magnetar giant flare to explain the flaring activity on 2004 December 27 from SGR1806-20 comprehensively. A global rearrangement is expected by the magnetic reconnection that requires explain ing the giant SGR flares. In this paper we propose two regions of flares: preflare on the surface of magnetar and main burst at a distance of light cylinder radius. Acquiring the maximum potential drop on the magnetar surface, adopting space charge limited flow model, and using magnetic field B ≈ 10 15 G, the luminosities of flare energies release for the preflare phase and main burst phase are found to be in the order of 10 41 erg·s ˉ 1 and 10 44 erg·s ˉ 1 respectively, conforming to magnetar burst energy and flare temperature is determined by considering black body radiation.
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