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COMPTEL Observations of the Blazars 3C 454.3 and CTA 102

Citation:

Zhang S, Collmar W, Schoenfelder V, Bloemen H, Hermsen W, McConnell M, Bennett K, Williams OR. COMPTEL Observations of the Blazars 3C 454.3 and CTA 102. [Internet]. Submitted.

Abstract:

We have analyzed the two blazars of 3C 454.3 and CTA 102 using all available COMPTEL data from 1991 to 1999. In the 10-30 MeV band, emission from the general direction of the sources is found at the 4\$\sigma\$-level, being consistent with contributions from both sources. Below 10 MeV only 3C 454.3 is significantly detected, with the strongest evidence (5.6 \$\sigma\$) in the 3-10 MeV band. Significant flux variability is not observed for both sources, while a low emission is seen most of the years in the 3-10 MeV light curve for 3C 454.3. Its time-averaged MeV spectrum suggests a power maximum between 3 to 10 MeV.

Notes:

5 pages including 8 figures, to appear in the proceedings of the GAMMA 2001 High Energy Astrophysics Symposium (Baltimore, April 4-6, 2001)

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