Distribution of galactic X-ray sources at a large scale

Details Distribution of galactic X-ray sources at a large scale Distribution of galactic X-ray sources at a large scale

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978cosp.meetr....r&link_type=abstract

COSPAR, Plenary Meeting, 21st, Innsbruck, Austria, May 29-June 10, 1978, Paper. 11 p.

Astronomy and Astrophysics

Astronomy

Milky Way Galaxy, Spatial Distribution, X Ray Sources, Astronomical Models, Density (Number/Volume), Early Stars, Interstellar Gas, Latitude, Stellar Evolution

Scientific paper

The global distribution of galactic X-ray sources (GXRS) listed in the Fourth Uhuru catalog is investigated. The number-intensity distribution and the distributions with respect to galactic latitude and galactic longitude are computed on the basis of a specific assumption concerning the volume density of GXRS, a parametrization of the GXRS luminosity function by a power law, and the assumption that the GXRS are runaway systems. The results obtained indicate that: (1) most GXRS contain an extreme Population I object; (2) the birthrate of GXRS is related to the gas density prevailing in their birth places; and (3) most GXRS are runaway systems with a perpendicular velocity of approximately 100 km/s.

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