Published November 1989
| Version v1
Journal article
300 GeV gamma rays from Vela X-1
- 1. Durham Univ. (England)
Description
The high-mass X-ray binary Vela X-1 has been observed using the Narrabri 300 GeV gamma-ray telescope. The results show evidence for pulsed very high energy (VHE) gamma-ray emission, with a conservative overall Rayleigh chance probability of 0.00011. The long-term period derivative during our observations of 1986-1988 was negative, indicating a spin-up similar to that noted between 1975 and 1979. The time-averaged luminosity in VHE gamma rays is estimated to be about 3.6 x 10 to the 34th ergs/s. 20 refs
Additional details
Publishing Information
- Journal Title
- Astrophysical Journal
- Journal Volume
- 346
- Series
- Astrophys. J.
- Journal Page Range
- 967-970
- ISSN
- 0004-637X
- CODEN
- ASJOA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21038268
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- BINARY STARS; COSMIC X-RAY SOURCES; EMISSION SPECTRA; GAMMA RADIATION; LUMINOSITY; MAGNETIC FIELDS; MASS; PULSARS; PULSES; STAR ACCRETION
- Descriptors DEC
- COSMIC RADIO SOURCES; COSMIC RAY SOURCES; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RADIATIONS; SPECTRA; STAR EVOLUTION; STARS