X-ray, UV and FIR emission of Seyfert galaxies

Details X-ray, UV and FIR emission of Seyfert galaxies X-ray, UV and FIR emission of Seyfert galaxies

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.205..113r&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 205, no. 1, p. 113-121.

Astronomy and Astrophysics

Astronomy

2

Emission Spectra, Far Infrared Radiation, Galactic Radiation, Seyfert Galaxies, Ultraviolet Radiation, X Ray Astronomy, Line Spectra, Nonthermal Radiation, Quasars

Scientific paper

We have compiled multiwavelength data (in the radio, FIR, optical, UV and X-ray ranges) for a sample of 126 galaxies, including QSO, Seyfert 1, Seyfert 2, and galaxies dominated by star-forming processes. We have tested the implications of 'unified Seyfert models', which assume that Seyfert 1 and 2 galaxies are intrinsically the same kind of objects, but seen at different angles. A dense obscuring torus around the nucleus would originate the spectral differences actually observed. From our data we conclude that the UV-soft X-ray emission cannot be seen through the torus. On the other hand, the occultation/reflection picture underestimates significantly the UV luminosity. We propose a scheme in which the intensity of the non-thermal nuclear engine decreases from QSO to Sy 2 galaxies, while the relative contribution of star-forming regions increases in the same direction. The relatively low soft X-ray emission in Sy 2 galaxies implies that their UV radiation should be dominated by starbursts, rather than by the nuclear engine.

Affiliated with

Also associated with

No associations

Rating

X-ray, UV and FIR emission of Seyfert galaxies 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 X-ray, UV and FIR emission of Seyfert galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray, UV and FIR emission of Seyfert galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1068408