Gamma-ray halo around 3C 279: looking through the Sun on the 8th of October
arXiv:0809.4886 · doi:10.1111/j.1745-3933.2009.00801.x
Abstract
We discuss how the solar occultations of bright sources of energetic gamma rays can be used to extract non-trivial physical and astrophysical information, including the angular size of the image when it is significantly smaller than the experiment's angular resolution. We analyze the EGRET data and discuss prospects for other instruments. The Fermi Gamma Ray Space Telescope will be able to constrain the size of a possible halo around 3C~279 from observations it makes on the 8th of October each year.
6 pages, 4 eps figures, mn2e.cls style; v.2: numerous but minor changes to match the published version
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- Photon-axion mixing and ultra-high-energy cosmic rays from BL Lac type objects -- Shining light through the Universe
- A search for pair halos around active galactic nuclei through a temporal analysis of Fermi-LAT data
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