SIMBAD references

2017ApJ...843...90X - Astrophys. J., 843, 90-90 (2017/July-2)

Revisiting SNR Puppis A with seven years of Fermi Large Area Telescope observations.

XIN Y.-L., GUO X.-L., LIAO N.-H., YUAN Q., LIU S.-M. and WEI D.-M.

Abstract (from CDS):

Puppis A is a very famous and extensively studied supernova remnant that shows strong evidence of shock-cloud interaction. We reanalyze its GeV γ-ray emission using seven years of Pass 8 data recorded by the Fermi Large Area Telescope. The morphology of the γ-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 γ-ray spectrum in the energy range of 1-500 GeV shows a break at 7.92 ± 1.91 GeV, with photon indices of 1.81 ± 0.08 below the break and 2.53 ± 0.12 above the break, which can naturally explain the lack of TeV γ-ray emission from Puppis A. The multi-wavelength observations favor a hadronic origin for the γ-ray emission.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): gamma rays: general - ISM: supernova remnants - radiation mechanisms: non-thermal - radiation mechanisms: non-thermal

Simbad objects: 13

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