431 citations · 1.3k across the 42 of their papers we have counts for
5 papers · 1 filter
COMPTEL Observations of 3C 279 during the first 4 Years of the CGRO-Mission
W. Collmar, J. J. Blom, K. Bennett +6
The COMPTEL experiment aboard the Compton Gamma-Ray Observatory (CGRO) has observed the gamma-ray blazar 3C 279 several times between April 1991 and September 1995. This paper repo…
COMPTEL observations of the quasar PKS 0528+134 during the first 3.5 years of the CGRO mission
W. Collmar, K. Bennett, H. Bloemen +9
The COMPTEL observations of the blazar-type quasar PKS 0528+134 in the energy range 0.75 MeV to 30 MeV carried out between April 1991 and September 1994 have been analyzed. During…
Evidence for Gamma-Ray Flares in 3C 279 and PKS 1622-297 at ~10 MeV
W. Collmar, V. Schoenfelder, H. Bloemen +6
The EGRET experiment aboard the Compton Gamma-Ray Observatory (CGRO) has observed at energies above 100 MeV strong gamma-ray flares with short-term time variability from the gamma-…
A model for the high-energy emission of Cyg X-1
I. V. Moskalenko, W. Collmar, V. Schoenfelder
We construct a model of Cyg X-1 which describes self-consistently its emission from soft X-rays to MeV gamma rays. Instead of a compact pair-dominated gamma-ray emitting region, we…
Multi-wavelength Observations of 3C 273 in 1993-1995
C. von Montigny
We present the results of the multi-wavelength campaigns on 3C 273 in 1993-1995. During the observations in late 1993 this quasar showed an increase of its flux for energies greate…