Analysis of the COS B data for evidence of linear polarization of VELA pulsar gamma rays

Details Analysis of the COS B data for evidence of linear polarization of VELA pulsar gamma rays Analysis of the COS B data for evidence of linear polarization of VELA pulsar gamma rays

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...363..270m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 363, Nov. 1, 1990, p. 270-273.

Astronomy and Astrophysics

Astronomy

7

Cos-B Satellite, Gamma Ray Astronomy, Linear Polarization, Pulsars, Cosmic Rays, Electron-Positron Pairs, Emission Spectra

Scientific paper

The COS B spark chamber telescope observations of the Vela pulsar were analyzed for gamma-ray polarization. No significant quadrupole moment is found in the azimuthal distribution of the electron-positron pair production planes. However, analysis of the sensitivity indicates that even 100-percent polarization would not be detected. Therefore, the null result does not constrain the polarization of the Vela pulsar gamma-ray emission. This result contradicts the report of Caraveo et al. (1988) of possible evidence for polarization of the Vela pulsar gamma rays.

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