Long Term Spectral Properties of Blazars in the Gamma-ray Region

Details Long Term Spectral Properties of Blazars in the Gamma-ray Region Long Term Spectral Properties of Blazars in the Gamma-ray Region

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004head....8.0425n&link_type=abstract

American Astronomical Society, HEAD meeting #8, #04.25; Bulletin of the American Astronomical Society, Vol. 36, p.912

Other

Scientific paper

We have searched the entire EGRET archives ( ˜ 9 years of data) and selected all blazars that were well observed and bright enough to enable spectral index extraction using power law models in the 30 MeV-10000 MeV range. The sample includes 8 flat spectrum radio quasars (FSRQ), 1 low frequency peaked BL Lac (LBL) and 1 high frequency peaked BL Lac (HBL). There is evidence of variability of spectral index with the gamma-ray flux (>100 MeV) in all of them, but the nature of correlation is not uniform across all blazars. While there is an overall hardening of spectral index with increasing flux for some of the blazars, there is no overall trend for the others inspite of variability. We will examine these results in the context of blazar-contribution to the extragalactic gamma-ray background.

Affiliated with

Also associated with

No associations

Rating

Long Term Spectral Properties of Blazars in the Gamma-ray Region 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 Long Term Spectral Properties of Blazars in the Gamma-ray Region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long Term Spectral Properties of Blazars in the Gamma-ray Region will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1175033