SIMBAD references

2008ApJ...677L..31A - Astrophys. J., 677, L31-L34 (2008/April-2)

Secondary photons from high-energy protons accelerated in hypernovae.


Abstract (from CDS):

Recent observations show that hypernovae may deposit some fraction of their kinetic energy in mildly relativistic ejecta. In the dissipation process of such ejecta in a stellar wind, cosmic-ray protons can be accelerated up to ∼1019 eV. We discuss the TeV to MeV gamma-ray and the X-ray photon signatures of cosmic rays accelerated in hypernovae. Secondary X-ray photons, emitted by electron-positron pairs produced via cascade processes due to high-energy protons, are the most promising targets for X-ray telescopes. Synchrotron photons emitted by protons can appear in the GeV band, requiring nearby (<40 Mpc) hypernovae for detection with GLAST. In addition, air Cerenkov telescopes may be able to detect regenerated TeV photons emitted by electron-positron pairs generated by CMB attenuation of π0-decay photons.

Abstract Copyright:

Journal keyword(s): ISM: Cosmic Rays - Gamma Rays: Theory - Radiation Mechanisms: Nonthermal - Stars: Supernovae: General - X-Rays: General

Simbad objects: 4

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