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Is HESS J1912+101 Associated with an Old Supernova Remnant?
Su, Yang1,2; Zhou, Xin1,2; Yang, Ji1,2; Chen, Yang3,4; Chen, Xuepeng1,2; Gong, Yan1,2; Zhang, Shaobo1,2
2017-08-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume845Issue:1Pages:11
Corresponding AuthorSu, Yang(yangsu@pmo.ac.cn)
AbstractHESS J1912+101 is a shell-like TeV source that has no clear counterpart in multiwavelength. Using CO and H I data, we reveal that V-LSR similar to + 60 km s(-1) molecular clouds (MCs), together with shocked molecular gas and high-velocity neutral atomic shells, are concentrated toward HESS J1912+101. The prominent wing profiles up to V-LSR similar to + 80 km s(-1) seen in (CO)-C-12 (J = 1-0 and J = 3-2) data, as well as the high-velocity expanding H I shells up to V-LSR similar to + 100 km s(-1), exhibit striking redshifted-broadening relative to the quiescent gas. These features provide compelling evidences for large-scale perturbation in the region. We argue that the shocked MCs and the high-velocity H I shells may originate from an old supernova remnant (SNR). The distance to the SNR is estimated to be similar to 4.1. kpc based on the H I self-absorption method, which leads to a physical radius of 29.0 pc for the similar to(0.7-2.0) x 10(5). years old remnant with an expansion velocity of >= 40 km s(-1). The +60 km s(-1) MCs and the disturbed gas are indeed found to coincide with the bright TeV emission, supporting the physical association between them. Naturally, the shell-like TeV emission comes from the decay of neutral pions produced by interactions between the accelerated hadrons from the SNR and the surrounding high-density molecular gas.
KeywordISM: individual objects (shell-like clouds, HESS J1912+101) ISM: kinematics and dynamics ISM: supernova remnants
DOI10.3847/1538-4357/aa7f2a
WOS KeywordCOSMIC-RAY ACCELERATION ; MULTIBEAM PULSAR SURVEY ; MOLECULAR CLOUDS ; HIGH-ENERGY ; GAMMA-RAYS ; IC 443 ; DISCOVERY ; EMISSION ; STAR ; GAS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000407462000007
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22608
Collection中国科学院紫金山天文台
Corresponding AuthorSu, Yang
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
3.Nanjing Univ, Dept Astron, Nanjing 210023, Jiangsu, Peoples R China
4.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210023, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Su, Yang,Zhou, Xin,Yang, Ji,et al. Is HESS J1912+101 Associated with an Old Supernova Remnant?[J]. ASTROPHYSICAL JOURNAL,2017,845(1):11.
APA Su, Yang.,Zhou, Xin.,Yang, Ji.,Chen, Yang.,Chen, Xuepeng.,...&Zhang, Shaobo.(2017).Is HESS J1912+101 Associated with an Old Supernova Remnant?.ASTROPHYSICAL JOURNAL,845(1),11.
MLA Su, Yang,et al."Is HESS J1912+101 Associated with an Old Supernova Remnant?".ASTROPHYSICAL JOURNAL 845.1(2017):11.
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