X-ray observations of the VELA pulsar: Statistics and spectrum
Abstract
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.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- May 1976
- Bibcode:
- 1976STIN...7624097P
- Keywords:
-
- Pulsars;
- Spectrum Analysis;
- Statistical Analysis;
- X Ray Sources;
- X Rays;
- Energy Spectra;
- Oso;
- Photons;
- Proportional Counters;
- Radio Astronomy;
- Supernova Remnants;
- X Ray Spectra;
- Astronomy