摘要
G349.7+00.2 is a young Galactic supernova remnant(SNR)with a mushroom morphology in radio and X-rays,and it has been detected across the entire electromagnetic spectrum from radio to high energyγ-rays.Moreover,the remnant is interacting with a molecular cloud based on the observations in the radio and infrared band.The reason for the formation of the periphery and the dynamical evolution of the remnant is investigated using 3D hydrodynamical(HD)simulations.Under the assumption that the supernova ejecta is evolved in the medium with a density gradient,the shell is composed of two hemispheres with different radii,and the smaller hemisphere is in relatively dense media.The resulting periphery of remnant is consistent with detected ones,and it can be concluded that the peculiar periphery of G349.7+00.2 can be reproduced as the remnants interacting with the medium with a density gradient.
作者
Jing-Wen Yan
Chun-Yan Lu
Lu Wen
Huan Yu
Jun Fang
严婧雯;卢春燕;问璐;于欢;方军(Department of Astronomy,Key Laboratory of Astroparticle Physics of Yunnan Province,Yunnan University,Kunming 65009,China;Department of Physical Science and Technology,Kunming University,Kunming 650214,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China)
基金
the National Natural Science Foundation of China(NSFC,No.11873042)
the Yunnan Applied Basic Research Projects(2018FY001(-003))
the National Key R&D Program of China(No.2018YFA0404204)
the Candidate Talents Training Fund of Yunnan Province(2017HB003)
the Program for Excellent Young Talents,Yunnan University(WX069051 and 2017YDYQ01)。
