Magnetic Field Distribution in Polar CAP Models of GammaRay Bursters
Abstract
The highenergy spectral cutoffs are discussed as a function of angle predicted by magnetized polar cap models of gammaray bursters, in the presence of magnetic pair production and general relativistic effects. The effect of the photon escape beam shape on the relative probability of detection as a function of energy is calculated for a range of model parameters. These predictions are compared to the burster cutoff upper limits observed with SMM and are used to derive constraints on the detectable magnetic field strength distribution among bursters from future observations. A method for determining the intrinsic magnetic field distribution among gammaray bursting neutron stars is discussed.
 Publication:

The Astrophysical Journal
 Pub Date:
 August 1990
 DOI:
 10.1086/169076
 Bibcode:
 1990ApJ...359..438B
 Keywords:

 Gamma Ray Bursts;
 Magnetic Field Configurations;
 Neutron Stars;
 Polar Caps;
 Stellar Magnetic Fields;
 Astronomical Models;
 Computational Astrophysics;
 Pair Production;
 Relativistic Effects;
 Astrophysics;
 GAMMA RAYS: BURSTS;
 STARS: MAGNETIC;
 STARS: NEUTRON