A View of Supernova Remnant CTB 37A with the Fermi Gamma-ray Space Telescope

Abstract

Supernovae and their remnants have long been favored as cosmic ray ac- celerators. Recent data from the Fermi Gamma-ray Space Telescope has given us an improved window into such sources, including the remnant CTB 37A. Using the Fermi Large Area Telescope, we found significant gamma-ray emission coincident with the remnant, which also emits in radio, X-ray, and very high energy gamma-rays. We modeled the multiwavelength spectrum using a combination of hadronic and leptonic emission with reasonable parameter values and determined that CTB 37A is a potential cosmic ray accelerator commensurate with direct observations. By assembling statistically significant populations of such objects, we will be able to more fully illuminate the mystery of cosmic ray origins.

published in Advances in Space Research

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Cited by in corpus (10)

• The 1st Fermi Lat Supernova Remnant Catalog
• Search for extended sources in the Galactic Plane using 6 years of Fermi-Large Area Telescope Pass 8 data above 10 GeV
• Gamma Rays from Cosmic Rays in Supernova Remnants
• The Second AGILE Catalog of Gamma-Ray Sources
• Interstellar gas towards CTB 37A and the TeV gamma-ray source HESS J1714-385
• Evolution of High-Energy Particle Distribution in Mature Shell-Type Supernova Remnants
• Gamma-ray emission from middle-aged supernova remnants interacting with molecular clouds: the challenge for current models
• The high-energy gamma-ray detection of G73.9+0.9, a supernova remnant interacting with a molecular cloud
• HESS J1427-608: an unusual hard unbroken $\gamma -$ray spectrum in a very wide energy range
• On the Origin of the Gamma-Ray Emission toward SNR CTB 37A with $Fermi$-LAT