MODELING THE MULTI-WAVELENGTH EMISSION OF THE SHELL-TYPE SUPERNOVA REMNANT RX J1713.7-3946

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	MODELING THE MULTI-WAVELENGTH EMISSION OF THE SHELL-TYPE SUPERNOVA REMNANT RX J1713.7-3946
	Yuan Q(袁强); Bi XJ(毕效军); Yuan, Q; Liu, SM; Fan, ZH; Bi, XJ; Fryer, CL
刊名	ASTROPHYSICAL JOURNAL
	2011
卷号	735 期号:2 页码:120
关键词	cosmic rays gamma rays: ISM ISM: supernova remnants radiation mechanisms: non-thermal
通讯作者	[Yuan, Qiang ; Bi, Xiaojun] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China ; [Liu, Siming] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland ; [Liu, Siming] Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Peoples R China ; [Fan, Zhonghui] Yunnan Univ, Dept Phys, Kunming 650091, Peoples R China ; [Bi, Xiaojun] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China ; [Fryer, Christopher L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA ; [Fryer, Christopher L.] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
英文摘要	Emission 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.
学科主题	Astronomy & Astrophysics
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
原文出处	SCI
语种	英语
WOS记录号	WOS:000292089700053
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/240390]
专题	中国科学院高能物理研究所_中国散裂中子源高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Yuan Q,Bi XJ,Yuan, Q,et al. MODELING THE MULTI-WAVELENGTH EMISSION OF THE SHELL-TYPE SUPERNOVA REMNANT RX J1713.7-3946[J]. ASTROPHYSICAL JOURNAL,2011,735(2):120.
APA	袁强.,毕效军.,Yuan, Q.,Liu, SM.,Fan, ZH.,...&Fryer, CL.(2011).MODELING THE MULTI-WAVELENGTH EMISSION OF THE SHELL-TYPE SUPERNOVA REMNANT RX J1713.7-3946.ASTROPHYSICAL JOURNAL,735(2),120.
MLA	袁强,et al."MODELING THE MULTI-WAVELENGTH EMISSION OF THE SHELL-TYPE SUPERNOVA REMNANT RX J1713.7-3946".ASTROPHYSICAL JOURNAL 735.2(2011):120.