Search for linear polarization in gamma-ray sources - Possible evidence for the VELA pulsar

Details Search for linear polarization in gamma-ray sources - Possible evidence for the VELA pulsar Search for linear polarization in gamma-ray sources - Possible evidence for the VELA pulsar

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...327..203c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 327, April 1, 1988, p. 203-213. CNR-supported research.

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Gamma Ray Astronomy, Linear Polarization, Magnetic Stars, Neutron Stars, Pulsars, Stellar Rotation, Computational Astrophysics, Electron-Positron Pairs, Gamma Ray Telescopes, Physical Properties, Polarization (Waves), Radio Sources (Astronomy)

Scientific paper

The use of the azimuthal distribution of planes containing e(+)/e(-) pairs from high-energy photon materialization to investigate the nature of gamma-ray sources is discussed. Analytical work done on COS B data for bright COS B sources (Vela, Crab, and Geminga) and for a reference background region is presented along with results which are indicative of a low-chance-probability anisotropy effect for Vela. The case for the Vela pulsar is studied in more detail, starting from its pulsation properties and from a polarization interpretation of the observed anisotropy. A possible physical interpretation of the results is given in the context of pulsar gamma-ray emission, and requirements for future gamma-ray telescopes derived from COS B experience are examined.

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