Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984chjss...3..195y&link_type=abstract
(Chinese Journal of Space Science, vol. 3, July 1983, p. 195-206) Chinese Physics (ISSN 0273-429X), vol. 4, Apr.-June 1984, p. 3
Astronomy and Astrophysics
Astronomy
Astronomical Spectroscopy, Quasars, Radio Emission, Ubv Spectra, X Ray Sources, H Beta Line, Magnitude, Radiant Flux Density, Radio Sources (Astronomy), Red Shift, Seyfert Galaxies, Spectral Line Width
Scientific paper
A statistical analysis is performed of the X-ray properties of 247 quasars in the 0.5-4.5 keV band observed from the Einstein Observatory, as an introduction to a large-scale study of X-ray quasars and active nuclei. It is found that: (1) among all the 1619 known quasars of various magnitudes and redshifts, those detected as X-ray sources are of nearly equal percentage; (2) there exist weak correlations between optical emissions and X-ray emissions, implying that the emitting regions in the optical, high-frequency radio, and X-ray bands are similar; (3) there is a strong correlation between the ratio of the equivalent widths of the emission H-beta and the forbidden line O III and the X-ray luminosity indicator for type-1 Seyfert galaxies; and (4) neither the color index U - B or B - V correlates with X-ray emission, but U - B correlates weakly with B - V.
Liu Rong-Li
Yang Hyun Seok
Zhang Qing-Hong
No associations
LandOfFree
The properties of X-ray emission of quasars 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 The properties of X-ray emission of quasars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The properties of X-ray emission of quasars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1853725