The Radio State of Extragalactic Gamma-Ray Sources Detected by CGRO

Details The Radio State of Extragalactic Gamma-Ray Sources Detected by CGRO The Radio State of Extragalactic Gamma-Ray Sources Detected by CGRO

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...273...65r&link_type=abstract

Astronomy and Astrophysics, Vol.273, NO. 1/JUNI, P. 65, 1993

Astronomy and Astrophysics

Astrophysics

69

Scientific paper

Based on measurements by EGRET on board CGRO high energy γ-ray emission (> 50 MeV) from 14 extragalactic sources has been reported since its launch in April 1991 until July 1992. All these sources are radio loud, have a compact core, are highly variable and a large fraction of them shows superluminal expansion. We present the results of radio observations in 1991 and in 1992 for sources accessible to the Effelsberg 100-m and the IRAM 30-m telescopes and compare the present state with previous light curves. As a main result we note for most sources enhanced radio emission with a delay up to several months relative to the EGRET detection when they are most likely at a high level of activity in the γ-ray range. Exceptions from this rule are the strongest radio sources in the sample, 3C273 and 3C279, with atypical characteristics. Our results constrain current models of γ-ray emission processes in AGN.

Affiliated with

Also associated with

No associations

Rating

The Radio State of Extragalactic Gamma-Ray Sources Detected by CGRO 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 The Radio State of Extragalactic Gamma-Ray Sources Detected by CGRO, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Radio State of Extragalactic Gamma-Ray Sources Detected by CGRO will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1732440