SIMBAD references

2004MNRAS.347L...1L - Mon. Not. R. Astron. Soc., 347, L1-L5 (2004/January-1)

Compton drag as a mechanism for very high linear polarization in gamma-ray bursts.

LAZZATI D., ROSSI E., GHISELLINI G. and REES M.J.

Abstract (from CDS):

The recent claim by Coburn & Boggs to have detected a very high degree of linear polarization in the prompt emission of GRB 021206 has stimulated interest in how much polarization could arise in gamma-ray bursts (GRBs) from synchrotron emission. Alternatively, as Shaviv & Dar have shown, GRB polarization could be produced by inverse Compton scattering in the point-source limit. We discuss polarization from a fireball that upscatters a soft radiation field. We show that, after the proper angular integration, the residual polarization can be large, in some cases approaching the point-source limit. We discuss the probability of realizing the geometrical conditions in which a large polarization is obtained showing that, for a particularly bright burst such as GRB 021206, the detection of polarization at the first attempt in the Compton drag scenario is not unlikely.

Abstract Copyright: 2004 RAS

Journal keyword(s): polarization - radiation mechanisms: non-thermal - gamma-rays: bursts

Simbad objects: 4

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