Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1085..459c&link_type=abstract
HIGH ENERGY GAMMA-RAY ASTRONOMY: Proceedings of the 4th International Meeting on High Energy Gamma-Ray Astronomy. AIP Conferenc
Astronomy and Astrophysics
Astronomy
Quasars, Gamma-Ray, Astronomical And Space-Research Instrumentation, Infall, Accretion, And Accretion Disks
Scientific paper
In the unification scheme, radio quasars and FR II radio galaxies come from the same parent population, but viewed at different angles. Based on the Comptonization models for the γ-ray emission from active galactic nuclei (AGNs), we estimate the number of radio quasars and FR II radio galaxies to be detected by the Gamma-Ray Large Area Space Telescope (GLAST) using the luminosity function (LF) of their parent population derived from the flat-spectrum radio quasar (FSRQ) LF. We find that ~1200 radio quasars will be detected by GLAST, if the soft seed photons for Comptonization come from the regions outside the jets. We also consider the synchrotron self-Comptonization(SSC) model, and find it unlikely to be responsible for γ-ray emission from radio quasars. We find that no FR II radio galaxies will be detected by GLAST. Our results show that most radio AGNs to be detected by GLAST will be FSRQs (~99% for the external Comptonization model, EC model), while the remainder (~1%) will be steep-spectrum radio quasars (SSRQs). This implies that FSRQs will still be good candidates for identifying γ-ray AGNs even for the GLAST sources. The contribution of all radio quasars and FR II radio galaxies to the extragalactic γ-ray background (EGRB) is calculated, which accounts for ~30% of the EGRB.
Bai Jin-Ming
Cao Xinwu
No associations
LandOfFree
Radio-loud quasars and the extragalactic γ-ray background 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 Radio-loud quasars and the extragalactic γ-ray background, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio-loud quasars and the extragalactic γ-ray background will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1100405