Discovery of X-Ray Emission from a Radio Supernova Remnant G352.7-0.1

Publications of the Astronomical Society of Japan

Dotani, Tadayasu³  Yamauchi, Shigeo²  Koyama, Katsuji⁴  Tsunemi, Hiroshi¹  Kinugasa, Kenzo¹  Torii, Ken'ichi¹ 

[1] Department of Earth and Space Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043 E-mail(KK):;Faculty of Humanities and Social Sciences, Iwate University, 3-18-34 Ueda, Morioka, Iwate 020-8550;The Institute of Space and Astronautical Science, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510;Department of Physics, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto 606-8502

关键词: Abundances;    "ISM: individual objects (G352.7-0.1)";    "ISM: supernova remnants";    "X-rays: sources";    "X-rays: spectra";   

DOI  :  10.1093/pasj/50.2.249

学科分类：天文学(综合)

来源: Oxford University Press

【 摘 要 】

WereportonthefirstdetectionofX-raysfromtheradiosupernovaremnant(SNR)G352.7-0.1withtheASCAGalacticPlaneSurveyProject.AnX-rayimagewithashell-likemorphologysimilartothatoftheradiobandandaspectrumwithprominentK-shelllinesfromhighlyionizedSi,S,andArarepresented.ThesefeaturesprovideconvincingevidencethattheX-raysareduetoashock-heatedopticallythinhotplasma.Thespectraarerepresentedbyanon-equilibriumionization(NEI)modelwithanelectrontemperatureofkT∼2.0keV,anionizationparameterof$$ausim10^{11.0}$$cm−3s,andanabsorptionof$$N_extrmHsim2.9imes10^{22}$$cm−2.WereportonevidenceofoverabundancesofSiandSof∼3.7and∼3.4,relativetothesolarvalues,respectively.ThelargeabsorptionindicatesthatG352.7–0.1isneartothegalacticcenterregionand,afterremovingtheabsorption,theX-rayfluxinthe1–10keVbandisestimatedtobe$$F_extrmX(1-10extrm{kev})sim1.2imes10^{-11}extrm{ergcm}^{-2}extrms^{-2}$$.AssumingtheSNRtobeintheSedovphaseandneartothegalacticcenter(8.5kpc),G352.7-0.1isestimatedtohaveaSNexplosionenergyandageof$$E_extrm{SN}sim2imes10^{50}$$ergand$$t_{extrmage}sim2200$$yr,respectively;hence,itisamiddle-agedSNR.

【 授权许可】

Unknown