NAOC Open IR
Modelling the broadest spectral band of the Crab nebula and constraining the ion acceleration efficiency
Zhang, Xiao1,2; Chen, Yang1,2; Huang, Jing3; Chen, Ding4
2020-09-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume497Issue:3Pages:3477-3483
AbstractAlthough it is widely accepted that the electromagnetic spectrum from radio to very high energy gamma-rays of pulsar wind nebulae (PWNe) originates from leptons, there is still an open question that protons (or more generally, ions) may exist in pulsar wind and are further accelerated in PWN. The broad-band spectrum of the prototype PWN Crab, extended recently by the detection of the Tibet AS. and HAWC experiments above 100 TeV, may be helpful in constraining the acceleration efficiency of ions. Here, we model the broadest energy spectrum of Crab and find that the broad-band spectrum can be explained by the one-zone leptonic model in which the electrons/positrons produce the emission from radio to soft gamma-rays via the synchrotron process, and simultaneously generate the GeV-TeV gamma-rays through inverse Compton scattering including the synchrotron self-Compton process. In the framework of this leptonic model, the fraction of energy converted into the energetic protons is constrained to be below 0.5 (n(t)/10 cm(-3))(-1) per cent, where n(t) is the target gas density in the Crab. However, this fraction can be up to 7 (n(t)/10 cm(-3))(-1) per cent if only the gamma-ray data are used.
Keywordradiation mechanisms: non-thermal pulsars: individual: Crab ISM: supernova remnants gamma-rays: ISM
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC)
DOI10.1093/mnras/staa2151
WOS KeywordPULSAR-WIND NEBULAE ; INFRARED OBSERVATIONS ; NONTHERMAL RADIATION ; GAMMA-RADIATION ; YOUNG PULSAR ; ENERGY ; SYNCHROTRON ; EVOLUTION ; RAYS ; TEV
Language英语
Funding ProjectNational Key Research and Development Program of China[2018YFA0404204] ; National Key Research and Development Program of China[2017YFA0402600] ; National Natural Science Foundation of China (NSFC)[U1931204] ; National Natural Science Foundation of China (NSFC)[11803011] ; National Natural Science Foundation of China (NSFC)[11851305] ; National Natural Science Foundation of China (NSFC)[11773014] ; National Natural Science Foundation of China (NSFC)[11633007] ; National Natural Science Foundation of China (NSFC)[11873065] ; National Natural Science Foundation of China (NSFC)[11673041] ; National Natural Science Foundation of China (NSFC)[11533007]
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000577137200070
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/82050
Collection中国科学院国家天文台
Corresponding AuthorZhang, Xiao; Chen, Yang
Affiliation1.Nanjing Univ, Sch Astron & Space Sci, 163 Xianlin Ave, Nanjing 210023, Peoples R China
2.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210023, Peoples R China
3.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xiao,Chen, Yang,Huang, Jing,et al. Modelling the broadest spectral band of the Crab nebula and constraining the ion acceleration efficiency[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,497(3):3477-3483.
APA Zhang, Xiao,Chen, Yang,Huang, Jing,&Chen, Ding.(2020).Modelling the broadest spectral band of the Crab nebula and constraining the ion acceleration efficiency.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,497(3),3477-3483.
MLA Zhang, Xiao,et al."Modelling the broadest spectral band of the Crab nebula and constraining the ion acceleration efficiency".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 497.3(2020):3477-3483.
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