INTEGRAL Studies of Active Galactic Nuclei

Details INTEGRAL Studies of Active Galactic Nuclei INTEGRAL Studies of Active Galactic Nuclei

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.5104b&link_type=abstract

American Astronomical Society Meeting 207, #51.04; Bulletin of the American Astronomical Society, Vol. 37, p.1234

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the first INTEGRAL AGN catalog, based on observations performed from launch of the mission in October 2002 until January 2004. The catalog includes 42 AGN, of which 10 are Seyfert 1, 17 are Seyfert 2, and 9 are intermediate Seyfert 1.5. The fraction of blazars is rather small with 5 detected objects, and only one galaxy cluster and no star-burst galaxies have been detected so far. A complete subset consists of 32 AGN with a significance limit of 7 sigma in the INTEGRAL/ISGRI 20-40 keV data. Although the sample is not flux limited, the distribution of sources shows a ratio of obscured (NH > 1022 cm-2) to unobscured AGN of 1.5 - 2.0, consistent with luminosity dependent unified models for AGN. Only 4 Compton thick AGN are found in this low redshift (z = 0.02), low luminosity (LX = 2 x 1043 erg s-1) sample. Based on the INTEGRAL data presented here, the Seyfert 2 spectra are slightly harder (Gamma = 1.95 ± 0.01) than Seyfert 1.5 (Gamma = 2.10 ± 0.02) and Seyfert 1 (Gamma = 2.11 ± 0.05). INTEGRAL studied also a number of AGN in greater detail in the 2 - 500 keV energy range, including sources like Cen A, NGC 4151, 3C 273, Circinus galaxy, and NGC 4388. These studies probe the role of Compton reflection in AGN.

Affiliated with

Also associated with

No associations

Rating

INTEGRAL Studies of Active Galactic Nuclei 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 INTEGRAL Studies of Active Galactic Nuclei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and INTEGRAL Studies of Active Galactic Nuclei will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1279710