Geminga - Origins of its X-ray and gamma-ray emission

Details Geminga - Origins of its X-ray and gamma-ray emission Geminga - Origins of its X-ray and gamma-ray emission

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.265..921h&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 265, p. 921

Astronomy and Astrophysics

Astronomy

31

Pulsars, Stellar Models, Relativistic Particles, Particle Acceleration, Polar Caps, X Ray Sources, Distance, Gamma Ray Astronomy

Scientific paper

The ratio of X-ray to gamma-ray emission from the Geminga pulsar is explained, independently of the distance to the pulsar, by Arons' (1981, 1983) model for the production of relativistic particles near the pulsar surface at the polar caps. Polar cap heating by both reversed particles and their curvature radiation is able to explain the observed ratio of soft to hard X-ray components. This model predicts the distance to Geminga as approximately equal to 20 pc (4pi/Omega) exp 1/4, where Omega, the emission solid angle, may differ from 4pi by a factor of 2-3 or so.

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