منابع مشابه
Gamma Rays from Molecular Clouds
High energy γ-rays from individual giant molecular clouds contain unique information about the hidden sites of acceleration of galactic cosmic rays, and provide a feasible method for study of propagation of cosmic rays in the Galactic Disk on scales ≤ 100 pc. I discuss the spectral features of π-decay γ-radiation from clouds/targets located in proximity of relatively young proton accelerators, ...
متن کاملGamma rays from molecular clouds
It is believed that the observed diffuse gamma ray emission from the galactic plane is the result of interactions between cosmic rays and the interstellar gas. Such emission can be amplified if cosmic rays penetrate into dense molecular clouds. The propagation of cosmic rays inside a molecular cloud has been studied assuming an arbitrary energy and space dependent diffusion coefficient. If the ...
متن کاملGamma Rays from Dark Matter
I give a brief review of high energy gamma-ray signatures of dark matter. The decay of massiveX-particles and subsequent hadronization have been suggested as the origin of the highest energy cosmic rays. Propagation over cosmological distances to Earth (as would be the case in some topological defect origin models for the Xparticles) results in potentially observable gamma-ray fluxes at GeV ene...
متن کاملGamma rays from heavy neutralino dark matter.
We consider the gamma-ray spectrum from neutralino dark matter annihilations and show that internal bremsstrahlung of pair final states gives a previously neglected source of photons at energies near the mass of the neutralino. For masses larger than about 1 TeV, and for present day detector resolutions, this results in a characteristic signal that may dominate not only over the continuous spec...
متن کاملGamma-Rays from Decaying Dark Matter
We study the prospects for detecting gamma-rays from decaying Dark Matter (DM), focusing in particular on gravitino DM in R-parity breaking vacua. Given the substantially different angular distribution of the predicted gamma-ray signal with respect to the case of annihilating DM, and the relatively poor (of order 0.1◦) angular resolution of gamma-ray detectors, the best strategy for detection i...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1990
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/242.3.395