NONTHERMAL PROPERTIES OF SUPERNOVA REMNANT G1.9+0.3

作者：Ksenofontov L T^*; Voelk H J; Berezhko E G

来源：Astrophysical Journal, 2010, 714(2): 1187-1193.

DOI：10.1088/0004-637X/714/2/1187

• acceleration of particles
• gamma rays: ISM
• ISM: individual objects (G1.9+0.3)
• ISM: supernova remnants
• X-rays: individual (G1.9+0.3)

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.

• 出版日期2010-5-10