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arXiv · 1202.6439

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

Kazunori Kohri·Yutaka Ohira·Kunihito Ioka
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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.

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Kazunori Kohri, Yutaka Ohira, Kunihito Ioka. 2012-05-25. Gamma-ray flare and absorption in Crab Nebula: Lovely TeV-PeV astrophysics. https://doi.org/10.1111/j.1365-2966.2012.21388.x

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