Inferring the Shapes of the Gamma-ray Emitting Regions of Pulsar Magnetospheres

Details Inferring the Shapes of the Gamma-ray Emitting Regions of Pulsar Magnetospheres Inferring the Shapes of the Gamma-ray Emitting Regions of Pulsar Magnetospheres

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011head...12.2013k&link_type=abstract

American Astronomical Society, HEAD meeting #12, #20.13

Astronomy and Astrophysics

Astronomy

Scientific paper

Geometric models of gamma-ray emission from pulsars - such as the outer gap (OG; assuming uniform emissivity) and two-pole caustic (TPC) models - provide predictions for light curves as a function of observer and magnetic inclination to the pulsar spin axis. We use a generalized geometric model of emission from a zone along the last open field lines - OG and TPC are special cases - to determine the shape of the emitting region that best fits the observed light curve of each of the young LAT pulsars. For a given emitting volume, simplifying assumptions about the global current / potential structure also allow a direct prediction of the gamma-ray luminosity, and we test the validity of these assumptions by comparison with the observed luminosities for pulsars with distance estimates.

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