Comparison of X-Ray-- and Radio-selected BL Lacertae Objects in High-Energy Gamma-Ray Observations

Details Comparison of X-Ray-- and Radio-selected BL Lacertae Objects in High-Energy Gamma-Ray Observations Comparison of X-Ray-- and Radio-selected BL Lacertae Objects in High-Energy Gamma-Ray Observations

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...476l..11l&link_type=abstract

Astrophysical Journal Letters v.476, p.L11

Astronomy and Astrophysics

Astronomy

15

Galaxies: Bl Lacertae Objects: General, Gamma Rays: Observations

Scientific paper

In the course of the Compton Gamma Ray Observatory mission, the EGRET telescope has detected 14 BL Lacertae objects in high-energy gamma rays through Phase 4. According to the BL Lac sample in Ciliegi, Bassani, & Caroli, two of these 14 sources are X-ray selected (XBL) and 10 are radio-selected (RBL); two are not listed in this sample. An examination of the radio fluxes and the X-ray fluxes for the BL Lac objects detected by EGRET reveals that it seems a strong radio flux must be present if high-energy gamma rays are to be detected in a BL Lac object, while detection is independent of the X-ray flux of the source. This result is in agreement with the picture of the coaligned radio jet and X-ray jet model of the broadband properties of BL Lac objects. For the BL Lac objects listed in Ciliegi et al. that are not detected by EGRET, co-adding of the EGRET data for the undetected RBLs in such a way that the source positions coincide with each other yields a flux excess at a 3.5 sigma level, but similar co-adding of the EGRET data for the undetected XBLs yields no flux excess.

Affiliated with

Also associated with

No associations

Rating

Comparison of X-Ray-- and Radio-selected BL Lacertae Objects in High-Energy Gamma-Ray Observations 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 Comparison of X-Ray-- and Radio-selected BL Lacertae Objects in High-Energy Gamma-Ray Observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparison of X-Ray-- and Radio-selected BL Lacertae Objects in High-Energy Gamma-Ray Observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1775628