FERMI-LAT Observations of Supernova Remnant G5.7-0.1, Believed to be Interacting with Molecular Clouds

Abstract

This work reports on the detection of $\gamma$-ray emission coincident with the supernova remnant (SNR) SNR G5.7-0.1 using data collected by the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope. The SNR is believed to be interacting with molecular clouds, based on 1720 MHz hydroxyl (OH) maser emission observations in its direction. This interaction is expected to provide targets for the production of $\gamma$-ray emission from ${\pi }^0$-decay. A $\gamma$-ray source was observed in the direction of SNR G5.7-0.1, positioned nearby the bright $\gamma$-ray source SNR W28. We model the emission from radio to $\gamma$-ray energies using a one-zone model. Following consideration of both ${\pi }^0$-decay and leptonically dominated emission scenarios for the MeV-TeV source, we conclude that a considerable component of the $\gamma$-ray emission must originate from the ${\pi }^0$-decay channel. Finally, constraints were placed on the reported ambiguity of the SNR distance through X-ray column density measurements made using XMM-Newton observations. We conclude SNR G5.7-0.1 is a significant $\gamma$-ray source positioned at a distance of $\sim 3$ kpc with luminosity in the 0.1--100 GeV range of $L_{\gamma }\approx 7.4\times 10^{34}$ erg/s.

8 pages, 5 figures, 1 table, Accepted for publication in ApJ

References in corpus (13)

• Detection of the Characteristic Pion-Decay Signature in Supernova Remnants
• Parameterization of Gamma, e^+/- and Neutrino Spectra Produced by p-p Interaction in Astronomical Environment
• Simultaneous Acceleration of Protons and Electrons at Nonrelativistic Quasiparallel Collisionless Shocks
• Discovery of 35 New Supernova Remnants in the Inner Galaxy
• H.E.S.S. observations of the supernova remnant RX J0852.0-4622: shell-type morphology and spectrum of a widely extended VHE gamma-ray source
• Discovery of New Interacting Supernova Remnants in the Inner Galaxy
• Fermi LAT Observations of Supernova Remnants Interacting with Molecular Clouds: W41, MSH 17-39, and G337.0-0.1
• Modeling Bright Gamma-ray and Radio Emission at Fast Cloud Shocks
• Fermi-LAT Observations of Supernova Remnant Kesteven 79
• The X-ray Halo of GX5-1
• Gamma-Ray Emission from Supernova Remnant Interaction with Molecular Clumps
• Supernova Remnant Kes 17: Efficient Cosmic Ray Accelerator inside a Molecular Cloud
• Time-dependent Diffusive Shock Acceleration in Slow Supernova Remnant Shocks

Cited by in corpus (5)

• Distances of Galactic Supernova Remnants Using Red Clump Stars
• The impact of low luminosity AGN on their host galaxies: A radio and optical investigation of the kpc-scale outflow in MaNGA 1-166919
• On the Origin of the Gamma-Ray Emission toward SNR CTB 37A with $Fermi$-LAT
• Regions of suppressed diffusion around supernova remnants?
• Molecular Shocks and the Gamma-ray Clouds of the W28 Supernova Remnant