NewEvery arXiv paper, its researchers & institutions — mapped.
paper

Gamma-ray flare and absorption in Crab Nebula: Lovely TeV-PeV astrophysics

arXiv:1202.6439 · doi:10.1111/j.1365-2966.2012.21388.x

Abstract

We spectrally fit the GeV gamma-ray flares recently-observed in the Crab Nebula by considering a small blob Lorentz-boosted towards us. We point out that the corresponding inverse-Compton flare at TeV--PeV region is more enhanced than synchrotron by a Lorentz factor square \sim Γ^2, which is already excluding Γ\gtrsim 200 and will be detected by future TeV - PeV observatories, CTA, Tibet AS + MD and LHAASO for Γ\gtrsim 30. We also show that PeV photons emitted from the Crab Nebula are absorbed by Cosmic Microwave Background radiation through electron-positron pair creation.

6 pages, 5 figures, to appear in Mon. Not. Roy. Astron. Soc