Distribution and Variability of Cosmic X-Ray Sources
- 21 April 1967
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 156 (3773), 374-378
- https://doi.org/10.1126/science.156.3773.374
Abstract
At least 30 discrete cosmic x-ray sources have been detected thus far. The distribution is concentrated toward the galactic plane, and most of the sources are believed to lie within 2 kiloparsecs of the sun. It is estimated that the average luminosity of the observed sources is about 5 x 1036 ergs per second and that the entire galaxy contains about 1250 such sources. Comparisons of fluxes observed over the course of the past 2 years reveal that many sources are highly variable.This publication has 9 references indexed in Scilit:
- Cosmic X-Ray Sources in the 20-180 KEV Energy RangeThe Astrophysical Journal, 1967
- Energy Spectra of a Number of Celestial X-Ray Sources in the Energy Range from 2 to 60 Kiloelectron VoltsScience, 1966
- On the optical identification of SCO X-1The Astrophysical Journal, 1966
- Resolution of X-Ray Sources at Low Galactic LongitudeNature, 1966
- Observations of Cosmic X-RaysThe Astrophysical Journal, 1966
- Supernova Phenomena in OB Associations and Cosmic X-Ray SourcesNature, 1966
- Evidence for a supernova, of A.D. 1006The Astronomical Journal, 1965
- Cosmic X-ray SourcesScience, 1965
- X-Rays from the Galactic Center, External Galaxies, and the Intergalactic Medium.The Astrophysical Journal, 1963