Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...266..459s&link_type=abstract
Astrophysical Journal, Part 1, vol. 266, Mar. 15, 1983, p. 459-465.
Astronomy and Astrophysics
Astrophysics
70
Bl Lacertae Objects, X Ray Sources, Galactic Nuclei, Heao 2, Luminosity, Quasars, Relativistic Particles, Seyfert Galaxies
Scientific paper
It is estimated that the local volume density of BL Lac objects which emit greater than 10 to the 44th ergs/s in the 0.5-4.5 keV band is about 10 to the -7th/cu Mpc. This is based on identifications of bright X-ray sources, and the fact that Einstein X-ray observations detect BL Lac objects over a wide, continuous range of flux up to the thresholds of the all-sky X-ray surveys. Since this density is of the same order of magnitude as the local density of Seyfert galaxies, or local density of optically selected quasars, emitting X-rays at the same luminosity, we argue that the difference between these particular astronomical classifications is not solely due to the orientation of a relativistic beam.
Ku William H.-M.
Schwartz Dana A.
No associations
LandOfFree
Studies of BL Lacertae objects with the Einstein X-ray observatory - The absolute volume density does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Studies of BL Lacertae objects with the Einstein X-ray observatory - The absolute volume density, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Studies of BL Lacertae objects with the Einstein X-ray observatory - The absolute volume density will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1465846