The SNR Puppis A Revisited with Seven Years of Fermi Large Area Telescope Observations

Abstract

Puppis A is a very famous and extensively studied supernova remnant (SNR) that shows strong evidence of shock-cloud interaction. We re-analyze the GeV $\gamma$-ray emission of it using seven years Pass 8 data recorded by the Fermi Large Area Telescope (Fermi-LAT). The morphology of the $\gamma$-ray emission is more compatible with that of the thermal X-ray and IR emissions than the radio image, which suggests a possible correlation between the gamma-ray emitting region and dense clouds. The $\gamma$-ray spectrum in the energy range of 1-500 GeV shows a break at $7.92\pm 1.91$ GeV with the photon indices of $1.81\pm 0.08$ below the break and $2.53\pm 0.12$ above the break, which can naturally explain the lack of TeV $\gamma$-ray emission from Puppis A. The multi-wavelength observations favor a hadronic origin for the $\gamma$-ray emission.

arXiv comment9 pages, 4 figures, 4 tables, Accepted for publication in ApJ

References in corpus (43)

• Detection of the Characteristic Pion-Decay Signature in Supernova Remnants
• SUMSS: A Wide-Field Radio Imaging Survey of the Southern Sky. II. The Source Catalogue
• IRIS: A new generation of IRAS maps
• Development of the Model of Galactic Interstellar Emission for Standard Point-Source Analysis of Fermi Large Area Telescope Data
• Broad-band nonthermal emission from molecular clouds illuminated by cosmic rays from nearby supernova remnants
• Fermi-LAT Discovery of Extended Gamma-ray Emission in the Direction of Supernova Remnant W51C
• Observation of Supernova Remnant IC443 with the Fermi Large Area Telescope
• Observational constraints on energetic particle diffusion in young SNRs: amplified magnetic field and maximum energy
• Neutral pion emission from accelerated protons in the supernova remnant W44
• Fermi LAT Observations of the Supernova Remnant W28 (G6.4-0.1)
• Gamma rays from molecular clouds illuminated by cosmic rays escaping from interacting supernova remnants
• Gamma-ray Emission from Crushed Clouds in Supernova Remnants
• Radial distribution of the diffuse gamma-ray emissivity in the galactic disk
• Fermi-LAT Study of Gamma-ray Emission in the Direction of Supernova Remnant W49B
• Space- and Ground-Based Gamma-Ray Astrophysics
• In which shell-type SNRs should we look for gamma-rays and neutrinos from p-p collisions?
• Mechanism for spectral break in cosmic ray proton spectrum from Supernova remnant W44
• Gamma rays from molecular clouds illuminated by accumulated diffusive protons from supernova remnant W28
• Fermi Large Area Telescope Observations of the Supernova Remnant G8.7-0.1
• Chandra X-ray Observation of a Mature Cloud-Shock Interaction in the Bright Eastern Knot Region of Puppis A
• Gamma-rays from molecular clouds illuminated by accumulated diffusive protons. II: interacting supernova remnants
• Fermi Large Area Telescope Observations of the Cygnus Loop Supernova Remnant
• The Proper Motion of the Central Compact Object RX J0822-4300 in the Supernova Remnant Puppis A
• Detailed Investigation of the Gamma-Ray Emission in the Vicinity of SNR W28 with FERMI-LAT
• X-ray Emitting Ejecta in Puppis A Observed with Suzaku
• Observations of the neutral hydrogen surrounding the radio quiet neutron star RX J0822-4300 in Puppis A
• X-ray observations of RX J0822-4300 and Puppis-A
• High-Resolution X-Ray Spectroscopy of the Galactic Supernova Remnant Puppis A with the XMM-Newton RGS
• Discovery of Fast-Moving X-Ray--Emitting Ejecta Knots in the Oxygen-Rich Supernova Remnant Puppis A
• Discovery of X-Ray-Emitting O-Ne-Mg-Rich Ejecta in the Galactic Supernova Remnant Puppis A
• Constraints on cosmic-ray efficiency in the supernova remnant RCW 86 using multi-wavelength observations
• The most complete and detailed X-ray view of the SNR Puppis A
• Planck intermediate results. XXXI. Microwave survey of Galactic supernova remnants
• H.E.S.S. reveals a lack of TeV emission from the supernova remnant Puppis A
• On the Hadronic Gamma-ray Emission from Tycho's Supernova Remnant
• The e-ASTROGAM gamma-ray space mission
• Dynamics of X-Ray-Emitting Ejecta in the Oxygen-Rich Supernova Remnant Puppis A Revealed by the XMM-Newton RGS
• GeV γ-ray Emission Detected by Fermi-LAT Probably Associated with the Thermal Composite Supernova Remnant Kesteven 41 in a Molecular Environment
• High resolution CO observations towards the Bright Eastern Knot of the SNR Puppis A
• Evolution of High-Energy Particle Distribution in Mature Shell-Type Supernova Remnants
• Supernova Remnant Kesteven 27: Interaction with A Neighbor HI Cloud Viewed by Fermi
• HESS J1427-608: an unusual hard unbroken $\gamma -$ray spectrum in a very wide energy range
• Inverse Compton emission from a cosmic-ray precursor in RX J1713.7-3946

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• Time evolution of broadband non-thermal emission from supernova remnants in different circumstellar environments
• HESS J1640-465 -- a Gamma-ray emitting pulsar wind nebula ?
• Rectangular core-collapse supernova remnants: application to Puppis A
• LMC N132D: A mature supernova remnant with a power-law gamma-ray spectrum extending beyond 8 TeV
• Molecular and Atomic Clouds Associated with the Gamma-Ray Supernova Remnant Puppis A
• A global view of shocked plasma in the supernova remnant Puppis A provided by SRG/eROSITA
• Probing the origin of 4FGL J0822.8-4207: cosmic ray illumination from the SNR Puppis A and the Herbig-Haro object HH219
• Wide-field X-ray observations of the supernova remnant Puppis A with the SRG/ART-XC telescope
• Detection of the extended $\gamma$-ray emission from the new supernova remnant G321.3-3.9 with Fermi-LAT
• Evidence for protons accelerated and escaped from the Puppis A region using \textit{Fermi}-LAT observations