SIMBAD references

2003ApJ...586L..33R - Astrophys. J., 586, L33-L36 (2003/March-3)

Signatures of hadronic cosmic rays in starbursts? high-energy photons and neutrinos from NGC 253.

ROMERO G.E. and TORRES D.F.

Abstract (from CDS):

We show that it appears possible for starburst galaxies, like the nearby NGC 253, recently identified as a TeV source by the CANGAROO collaboration, to emit a significant amount of high-energy γ-rays and neutrinos through hadronic processes in their cores. We suggest that proton illumination of the inner winds of massive stars can be a viable mechanism for producing TeV γ-rays and neutrinos without a strong MeV-GeV counterpart. The rich stellar content of the starbursts, with millions of early-type stars concentrated in the central regions, where collective effects of the stellar winds and supernovae can produce a significant enhancement of the cosmic-ray density, provides an adequate scenario for TeV γ-ray generation. Close starbursts are also found to be potential sources for kilometer-scale neutrino telescopes, like IceCube, within reasonable integration times.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Individual: NGC Number: NGC 253 - Galaxies: Starburst - Gamma Rays: Observations - Gamma Rays: Theory

Simbad objects: 5

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