Two optically dull galaxies with strong nuclear X-ray sources

Details Two optically dull galaxies with strong nuclear X-ray sources Two optically dull galaxies with strong nuclear X-ray sources

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...246...20e&link_type=abstract

Astrophysical Journal, Part 1, vol. 246, May 15, 1981, p. 20-27.

Astronomy and Astrophysics

Astronomy

107

Galactic Nuclei, Galactic Radiation, Line Spectra, Radio Sources (Astronomy), Spectrum Analysis, X Ray Sources, Absorption Spectra, Active Galaxies, Bl Lacertae Objects, Emission Spectra, H Beta Line, Heao 2, Luminosity, Optical Properties

Scientific paper

The paper reports the detection by the Einstein Observatory High Resolution Imager of compact, probably variable, X-ray sources in the nuclei of NGC 3862 (= 3C 264) and NGC 4156 with luminosities of the order of 10 to the 42nd ergs/s (0.5-4.5 keV). Neither galaxy has an optical spectrum that would suggest such strong activity. One of the galaxies, NGC 4156, has the weakest emission line fluxes of any known X-ray active galaxy. Its H-beta/L-x ratio, however, is in keeping with previous results. The other galaxy, NGC 3862, has a normal galactic absorption line spectrum with no detectable Balmer emission, putting its H-beta/L-x ratio clearly above the expected value; this suggests its nucleus is similar to a low-luminosity BL Lac object.

Affiliated with

Also associated with

No associations

Rating

Two optically dull galaxies with strong nuclear X-ray sources 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 Two optically dull galaxies with strong nuclear X-ray sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two optically dull galaxies with strong nuclear X-ray sources will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1441047