Journal
ASTROPHYSICAL JOURNAL
Volume 714, Issue 2, Pages 1187-1193Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/714/2/1187
Keywords
acceleration of particles; gamma rays: ISM; ISM: individual objects (G1.9+0.3); ISM: supernova remnants; X-rays: individual (G1.9+0.3)
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Funding
- Russian Foundation for Basic Research [07-02-00221, 10-02-00154]
- Federal Agency of Science and Innovations [02.740.11.0248]
- PRAS [16]
- Leading Scientific Schools of Russia [3526.2010.2]
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The properties of the-presumably-youngest Galactic supernova remnant (SNR) G1.9+0.3 are investigated within the framework of nonlinear kinetic theory of cosmic ray acceleration in SNRs. The observed angular size and expansion speed as well as the radio and X-ray emission measurements are used to determine relevant physical parameters of this SNR. Under the assumption that SNR G1.9+0.3 is the result of a Type Ia supernova near the Galactic center (at the distance d = 8.5 kpc), the nonthermal properties are calculated. In particular, the expected TeV gamma-ray spectral energy density is predicted to be as low as epsilon(gamma)F(gamma) approximate to 5 x 10(-15) erg cm(-2) s(-1), strongly dependent (F(gamma) proportional to d(-11)) upon the source distance d.
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