Nonthermal properties of supernova remnant G1.9+0.3

Abstract

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 ${\epsilon }_{\gamma }{F}_{\gamma }\approx 5\times 10^{-15}$ erg cm${}^{-2}$ s${}^{-1}$, strongly dependent ($F_{\gamma }\propto d^{-11}$) upon the source distance d.

7 pages, 5 figures, accepted for publication in ApJ

References in corpus (15)

• The Youngest Galactic Supernova Remnant: G1.9+0.3
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• Spectrum of cosmic rays, produced in supernova remnants
• Production of Magnetic Turbulence by Cosmic Rays Drifting Upstream of Supernova Remnant Shocks
• Modeling Bell's Non-resonant Cosmic Ray Instability
• Variation of cosmic ray injection across supernova shocks
• Numerical Studies of Diffusive Shock Acceleration at Spherical Shocks
• The transport of cosmic rays in self-excited magnetic turbulence
• The radio expansion and brightening of the very young supernova remnant G1.9+0.3
• Dynamical effects of self-generated magnetic fields in cosmic ray modified shocks
• Turbulence Dissipation and Particle Injection in Non-Linear Diffusive Shock Acceleration with Magnetic Field Amplification
• Turbulence and particle acceleration in collisionless supernovae remnant shocks: I-Anisotropic spectra solutions
• X-ray Spectral Variations in the Youngest Galactic Supernova Remnant G1.9+0.3
• Cosmic Ray Acceleration by Supernova Shocks
• A 20 Year Radio Light Curve for the Young Supernova Remnant G1.9+0.3

Cited by in corpus (3)

• Wild at Heart:-The Particle Astrophysics of the Galactic Centre
• TeV γ-ray observations of the young synchrotron-dominated SNRs G1.9+0.3 and G330.2+1.0 with H.E.S.S
• Expected gamma-ray emission of supernova remnant SN 1987A