A Multi-frequency campaign on the gamma-ray loud blazar W Comae
摘要
We report preliminary results of a multi-frequency campaign on the TeV candidate blazar W Comae (z=0.102). Flux limits by Whipple and HEGRA show that the TeV flux must be considerably below an E^-2 extrapolation of the EGRET flux. In the framework of proton-initiated cascade models, this implies a moderate amount of gamma-ray attenuation due to pair production in collisions with low-energy photons of the extragalactic infrared background. In a simple SSC model, the gamma-ray spectrum cuts off intrinsically just below TeV without requiring external absorption.
引用
@article{arxiv.astro-ph/9706243,
title = {A Multi-frequency campaign on the gamma-ray loud blazar W Comae},
author = {M. Maisack and K. Mannheim and R. D. Geckeler and M. Hillas and S. Katajainen and F. Marshall and D. Petry and C. v. Montigny and G. Paubert and J. Rose and A. Sillanpaeae and L. O. Takalo and H. Teraesranta},
journal= {arXiv preprint arXiv:astro-ph/9706243},
year = {2019}
}
备注
6 pages, Latex using crckapb.sty, to appear in the proceedings of the conference on Blazars, Black Holes, and Jets, Girona, Spain, 9-12 September 1996, eds. M. Kidger and J.A. de Diego, Astrophysics and Space Science Series