Fermi-LAT Observation of Supernova Remnant S147

Journal Article · Fri Aug 17 00:00:00 EDT 2012 · Astrophys.J.752:135,2012

DOI:https://doi.org/10.1088/0004-637X/752/2/135· OSTI ID:1049755

Katsuta, J; Uchiyama, Y; Tanaka, T; Tajima, H; Bechtol, K; Funk, S; Lande, J; Ballet, J; Hanabata, Y; Lemoine-Goumard, M; Takahashi, T

We present an analysis of gamma-ray data obtained with the Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope in the region around SNR S147 (G180.0-1.7). A spatially extended gamma-ray source detected in an energy range of 0.2-10 GeV is found to coincide with SNR S147. We confirm its spatial extension at >5{sigma} confidence level. The gamma-ray flux is (3.8 {+-} 0.6) x 10{sup -8} photons cm{sup -2} s{sup -1}, corresponding to a luminosity of 1.3 x 10{sup 34} (d/1.3 kpc){sup 2} erg s{sup -1} in this energy range. The gamma-ray emission exhibits a possible spatial correlation with prominent H{alpha} filaments of S147. There is no indication that the gamma-ray emission comes from the associated pulsar PSR J0538+2817. The gamma-ray spectrum integrated over the remnant is likely dominated by the decay of neutral {pi} mesons produced through the proton-proton collisions in the filaments. Reacceleration of pre-existing CRs and subsequent adiabatic compression in the filaments is sufficient to provide the required energy density of high-energy protons.

• Research Organization: SLAC National Accelerator Laboratory (SLAC)
• Sponsoring Organization: DOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1049755
• Report Number(s): SLAC-PUB-14866
• Journal Information: Astrophys.J.752:135,2012, Journal Name: Astrophys.J.752:135,2012 Journal Issue: 2 Vol. 752; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Astrophysics
ASTRO
COMPRESSION
DECAY
ENERGY DENSITY
ENERGY RANGE
LUMINOSITY
MESONS
PHOTONS
PROTONS
PULSARS
SUPERNOVA REMNANTS
TELESCOPES