%0 Journal Article
%T Fermi/LAT Study of Gamma-Ray Emission in the Direction of the Monoceros Loop Supernova Remnant
%+ Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112))
%+ Université de Bordeaux (UB)
%A Katagiri, H.
%A Sugiyama, S.
%A Ackermann, M.
%A Ballet, J.
%A Casandjian, J. M.
%A Hanabata, Y.
%A Hewitt, J. W.
%A Kerr, M.
%A Kubo, H.
%A Lemoine-Goumard, M.
%A Ray, P. S.
%< avec comité de lecture
%@ 0004-637X
%J The Astrophysical Journal
%I American Astronomical Society
%V 831
%8 2016
%D 2016
%Z 1608.06380
%Z 2016ApJ...831..106K
%R 10.3847/0004-637X/831/1/106
%K acceleration of particles
%K cosmic rays
%K gamma-rays: ISM
%K ISM: individual objects: the Monoceros Loop
%K ISM: supernova remnants
%K Astrophysics - High Energy Astrophysical Phenomena
%Z Sciences of the Universe [physics]
%Z Sciences of the Universe [physics]/Astrophysics [astro-ph]Journal articles
%X We present an analysis of the gamma-ray measurements by the Large Area Telescope on board the Fermi Gamma-ray Space Telescope in the region of the supernova remnant (SNR) Monoceros Loop (G205.5+0.5). The brightest gamma-ray peak is spatially correlated with the Rosette Nebula, which is a molecular cloud complex adjacent to the southeast edge of the SNR. After subtraction of this emission by spatial modeling, the gamma-ray emission from the SNR emerges, which is extended and fit by a Gaussian spatial template. The gamma-ray spectra are significantly better reproduced by a curved shape than a simple power law. The luminosities between 0.2 and 300 GeV are ∼ 4× {10}34 erg s-1 for the SNR and ∼ 3× {10}34 erg s-1 for the Rosette Nebula, respectively. We argue that the gamma-rays likely originate from the interactions of particles accelerated in the SNR. The decay of neutral pions produced in nucleon-nucleon interactions of accelerated hadrons with interstellar gas provides a reasonable explanation for the gamma-ray emission of both the Rosette Nebula and the Monoceros SNR.
%G English
%L insu-03746215
%U https://insu.hal.science/insu-03746215
%~ CEA
%~ INSU
%~ CNRS
%~ CEA-UPSAY
%~ UNIV-PARIS-SACLAY
%~ CEA-UPSAY-SACLAY
%~ UP-SCIENCES