Models for compact x-ray sources
Conference
·
· Int. Astron. Union Symp., no. 55, pp. 135-142
OSTI ID:4421156
From symposium X - and gamma -ray astronomy; Madrid, Spain (11 May 1972). See CONF-720599-. A statistical analysis of the Uhuru catalog of x-ray sources leads to the following conclusions. If the weak sources are omitted, there is a strong concentration to low galactic latitude but the absence of a strong background and the presence of some strong sources at low galactic longitude indicate an appreciable number of sources of luminosity L~10/sup 4/ L/ sub sub solar in the vicinity of the nuclear bulge''. This region generally suggests stellar population II'' and therefore stars of small mass. However, there is some suggestion of a second class of sources, distributed in the galactic plane like stellar population I'' and suggesting large stellar masses. There are three possible types of simple x-ray spectra, (a) optically thin bremsstrahlung, (b) blackbody spectrum, and (c) power-law spectra. Only theoretical models for type (a) are reviewed, including accretion, rotation and vibration for a white dwarf star and cocoons around a neutron star. (auth)
- Research Organization:
- Cornell Univ., Ithaca, NY
- NSA Number:
- NSA-29-008497
- OSTI ID:
- 4421156
- Conference Information:
- Journal Name: Int. Astron. Union Symp., no. 55, pp. 135-142
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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