X-ray observations of the VELA pulsar: Statistics and spectrum

Details X-ray observations of the VELA pulsar: Statistics and spectrum X-ray observations of the VELA pulsar: Statistics and spectrum

May 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976stin...7624097p&link_type=abstract

X-ray observations of the Vela pulsar: Statistics and spectrum

Astronomy and Astrophysics

Astronomy

Pulsars, Spectrum Analysis, Statistical Analysis, X Ray Sources, X Rays, Energy Spectra, Oso, Photons, Proportional Counters, Radio Astronomy, Supernova Remnants, X Ray Spectra

Scientific paper

The Vela pulsar was observed in the range 2-60 keV by the GSFC proportional counter experiment onboard OSO-8 with temporal resolution sufficient to make possible a sensitive search for pulsed X-rays at the radio pulsar period. A statistical analysis yielded 8 per cent as the 3 sigma upper limit on the pulsed fraction. The energy spectrum is fit well by a structureless power law with number index 2.21 + or - 0.2 and absorption by a hydrogen column density of NH equals 2.9 + or - 2.0 times ten to the twenty-second power per sq.cm.

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