Non-thermal emission from old supernova remnants

Abstract

We study the non-thermal emission from old shell-type supernova remnants (SNRs) on the frame of a time-dependent model. In this model, the time-dependent non-thermal spectra of both primary electrons and protons as well as secondary electron/positron ($e^{\pm }$) pairs can be calculated numerically by taking into account the evolution of the secondary $e^{\pm }$ pairs produced from proton-proton (p-p) interactions due to the accelerated protons collide with the ambient matter in an SNR. The multi-wavelength photon spectrum for a given SNR can be produced through leptonic processes such as electron/positron synchrotron radiation, bremsstrahlung and inverse Compton scattering as well as hadronic interaction. Our results indicate that the non-thermal emission of the secondary $e^{\pm }$ pairs is becoming more and more prominent when the SNR ages in the radiative phase because the source of the primary electrons has been cut off and the electron synchrotron energy loss is significant for a radiative SNR, whereas the secondary $e^{\pm }$ pairs can be produced continuously for a long time in the phase due to the large energy loss time for the p-p interaction. We apply the model to two old SNRs, G8.7$-$0.1 and G23.3$-$0.3, and the predicted results can explain the observed multi-wavelength photon spectra for the two sources.

11 pages, 7 figures, accepted for publication in MNRAS

References in corpus (19)

• Energy spectra of gamma-rays, electrons and neutrinos produced at proton-proton interactions in the very high energy regime
• The H.E.S.S. survey of the Inner Galaxy in very high-energy gamma-rays
• High-energy particle acceleration in the shell of a supernova remnant
• Parameterization of Gamma, e^+/- and Neutrino Spectra Produced by p-p Interaction in Astronomical Environment
• A detailed spectral and morphological study of the gamma-ray supernova remnant RX J1713.7-3946 with H.E.S.S
• A Spatial and Spectral Study of Nonthermal Filaments in Historical Supernova Remnants: Observational Results with Chandra
• Radio to Gamma-Ray Emission from Shell-type Supernova Remnants: Predictions from Non-linear Shock Acceleration Models
• Detection of TeV gamma-ray Emission from the Shell-Type Supernova Remnant RX J0852.0-4622 with H.E.S.S
• A High-Resolution Study of Nonthermal Radio and X-Ray Emission from SNR G347.3-0.5
• TeV Gamma-Rays from Old Supernova Remnants
• Chandra Observations of A Galactic Supernova Remnant Vela Jr.: A New Sample of Thin Filaments Emitting Synchrotron X-Rays
• Detection of Gamma-rays around 1TeV from RX J0852.0-4622 by CANGAROO-II
• Diffuse Hard X-ray Sources Discovered with the ASCA Galactic Plane Survey
• VLA and XMM-Newton observations of the SNR W41/TeV Gamma-ray source HESS J1834-087
• Diffractive Interaction and Scaling Violation in pp->pi^0 Interaction and GeV Excess in Galactic Diffuse Gamma-Ray Spectrum of EGRET
• Observation of VHE Gamma Radiation from HESS J1834-087/W41 with the MAGIC Telescope
• RXTE, ROSAT and ASCA Observations of G347.3-0.5 (RX J1713.7-3946): Probing Cosmic Ray Acceleration by a Galactic Shell-Type Supernova Remnant
• Gamma-ray emission expected from Kepler's SNR
• Chandra View of the Unidentified TeV Gamma-ray Source HESS J1804-216

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• Gamma Rays from the Tycho Supernova Remnant: Leptonic or Hadronic?
• Non-thermal Emissions from Cool Cores Heated by Cosmic-Rays in Galaxy Clusters
• A Hadronic-Leptonic Model for the Fermi Bubbles: Cosmic-Rays in the Galactic Halo and Radio Emission
• X-Ray Emission from the PeVatron-candidate Supernova Remnant G106.3+2.7
• The multi-band nonthermal emission from the supernova remnant RX J1713.7-3946
• Diffuse Galactic Gamma Rays from Shock-Accelerated Cosmic Rays
• Time evolution of broadband non-thermal emission from supernova remnants in different circumstellar environments
• Suppression of Bremsstrahlung losses from relativistic plasma with energy cutoff
• Multiband Nonthermal Radiative Properties of HESS J1813-178
• Geminga contribution to the cosmic-ray positron excess according to the gamma-ray observations
• Arc-minute-scale studies of the interstellar gas towards HESSJ1804$-$216: Still an unidentified TeV $\gamma$-ray source
• The Gamma-Ray Emission from the Supernova Remnant RX J1713.7-3946 Interacting with Two-phase Medium