High Energy Emission from Magnetar Due to Giant Flare

A. Kader, K. Duorah

Department of Physics, Gauhati University, Guwahati, India.

DOI: 10.4236/ijaa.2013.32019                

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 explaining 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 ≈ 10¹⁵ G, the luminosities of flare energies release for the preflare phase and main burst phase are found to be in the order of 10⁴¹ erg·sˉ¹ and 10⁴⁴ erg·sˉ¹ respectively, conforming to magnetar burst energy and flare temperature is determined by considering black body radiation.

Keywords

Solar Flares; Magnetic Reconnection; Gamma-Rays; Observations—Neutron Stars; Magnetic Fields—Magnetars

Conflicts of Interest

The authors declare no conflicts of interest.

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