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MODELING THE MULTI-WAVELENGTH EMISSION OF THE SHELL-TYPE SUPERNOVA REMNANT RX J1713.7-3946
Yuan, Qiang1; Liu, Siming2,3; Fan, Zhonghui4; Bi, Xiaojun1,5; Fryer, Christopher L.6,7
2011-07-10
Source PublicationASTROPHYSICAL JOURNAL
Volume735Issue:2
AbstractEmission mechanisms of the shell-type supernova remnant (SNR) RX J1713.7-3946 are studied with multi-wavelength observational data from the radio, X-ray, GeV gamma-ray, and TeV gamma-ray bands. A Markov Chain Monte Carlo method is employed to explore the high-dimensional model parameter space systematically. Three scenarios for the gamma-ray emission are investigated: the leptonic, the hadronic, and a hybrid. Thermal emission from the background plasma is also included to constrain the gas density, assuming ionization equilibrium, and a 2 sigma upper limit of about 0.03 cm(-3) is obtained as far as thermal energies account for a significant fraction of the dissipated kinetic energy of the SNR shock. Although systematic errors dominate the chi(2) of the spectral fit of all models, we find that (1) the leptonic model has the best constrained model parameters, whose values can be easily accommodated with a typical supernova, but gives a relatively poor fit to the TeV gamma-ray data; (2) the hybrid scenario has one more parameter than the leptonic one and improves the overall spectral fit significantly; and (3) the hadronic one, which has three more parameters than the leptonic model, gives the best fit to the overall spectrum with relatively poorly constrained model parameters and very hard spectra of accelerated particles. The uncertainties of the model parameters decrease significantly if the spectral indices of accelerated electrons and protons are the same. The hybrid and hadronic models also require an energy input into high-energy protons, which seems to be too high compared with typical values for a supernova explosion. Further investigations are required to reconcile these observations with SNR theories.
KeywordCosmic Rays Gamma Rays: Ism Ism: Supernova Remnants Radiation Mechanisms: Non-thermal
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/735/2/120
WOS KeywordCOSMIC-RAY ACCELERATION ; STOCHASTIC ELECTRON ACCELERATION ; INTERSTELLAR RADIATION-FIELD ; SHOCK ACCELERATION ; PARTICLE-ACCELERATION ; NONTHERMAL EMISSION ; SN 1006 ; GAMMA ; TEV ; RX-J1713.7-3946
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000292089700053
Citation statistics
Cited Times:43[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15970
Collection暗物质和空间天文实验室
Affiliation1.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
2.Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
3.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Peoples R China
4.Yunnan Univ, Dept Phys, Kunming 650091, Peoples R China
5.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
6.Los Alamos Natl Lab, Los Alamos, NM 87545 USA
7.Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
Recommended Citation
GB/T 7714
Yuan, Qiang,Liu, Siming,Fan, Zhonghui,et al. MODELING THE MULTI-WAVELENGTH EMISSION OF THE SHELL-TYPE SUPERNOVA REMNANT RX J1713.7-3946[J]. ASTROPHYSICAL JOURNAL,2011,735(2).
APA Yuan, Qiang,Liu, Siming,Fan, Zhonghui,Bi, Xiaojun,&Fryer, Christopher L..(2011).MODELING THE MULTI-WAVELENGTH EMISSION OF THE SHELL-TYPE SUPERNOVA REMNANT RX J1713.7-3946.ASTROPHYSICAL JOURNAL,735(2).
MLA Yuan, Qiang,et al."MODELING THE MULTI-WAVELENGTH EMISSION OF THE SHELL-TYPE SUPERNOVA REMNANT RX J1713.7-3946".ASTROPHYSICAL JOURNAL 735.2(2011).
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