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COMPTEL Observations of the Blazars 3C 454.3 and CTA 102

S. Zhang·W. Collmar·V. Schoenfelder·H. Bloemen·W. Hermsen·M. McConnell·K. Bennett·O. R. Williams
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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$σ$-level, being consistent with contributions from both sources. Below 10 MeV only 3C 454.3 is significantly detected, with the strongest evidence (5.6 $σ$) 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.

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S. Zhang, W. Collmar, V. Schoenfelder, H. Bloemen, W. Hermsen, M. McConnell, K. Bennett, O. R. Williams. 2001-07-10. COMPTEL Observations of the Blazars 3C 454.3 and CTA 102. https://doi.org/10.1063/1.1419427

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