公益社団法人 日本天文学会 · X 183 0036 1 10 e-mail: [email protected] 1keV X...

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腁腅腄腃腂 腋腐腆腒腊腕 X 腑腖腍腗腎 腅臺致膨膢臇膛臋 1830036 臸膬臵臬臄臺臕臮 110e-mail: [email protected] 膂腂腞膗膔腝膟膪腚腌腜腇膛腾膠膉腞腈腖腀 1 keV 腰腶腞膙 X 膏膛腾膠膉 (SXDB: Soft X-ray Di#use Background) 40 膚腰膋膐腝膜膀腏腧腔腋腀 腓腞膎膔腟腇腣腕腨腊腗腙腇腜腇腁 膞膊腥腟 腄腒腐腍腅 腴膍腩膨腇腙膙 X 膏膛腾膠膉腊腥腀 膆膑腹膏腩膟膪腑腀 腏腣腐腣腜膇膥腊腥腞腺膘腩膖腠 腔腁 腡腢腳膧腜腺膘腩膈腒膓膩腼膢腊腥腞膠膉腛腀 膡膃腱膒膌腩腤腘腽腷腫腯腃腸膁腛膄腉腥腧腦 膠膉腋腆腦腎腛腋膤腥腊腝腜腗腔腁 腽腷腫腯腃膕腞 X 膏膠膉腩腑腙腇腦膅腵腬腮腪腭腞腵膘腟膦 200270 膣膘腛腇腈腻腇膝腲腝腆腦腎腛腤腨腊腗腔腁 1. X 腑腖腍腗腎腇腉腀 膖臭腣腦膋腷腽膑腎腱腻膒膋臞腣臅腳腓腭腔 腭腢腸膇膐腼腂腥臊腏臣臀腖腳腁 腒腥腋 腛腀 X 臞腥腸膇膐腼腂臦 (0.1100 keV) 腣腍腑腳 臊腏臟至腎腱腫腬膕腣膤臢腓腴腳腒腠 腦腀 1960 臻臨腥 X 臞至膡腥膝腑腎腱臫腱腴 腞腊腙腁 腘腥臬腟腀 2 keV 腎腱100 keV 腭腟腥 腸膇膐腼腂臦腥臊腦腀 膾膮腥膃膍膒膆膎膗臙腢 腡腥膤臢腣腰腲腀 臤臗腥膳膟至臥腎腱腥 X 臊腥臍腤膽腵腗腟腉腳腒腠腏膠臉腠腢腜腞腐腙腁 X 臞腸膇膐腼腂腏 2 keV 膓膙腥臊腥 膀膊腽膅膐腦腀 2 keV 膓臑腥膀膊腽膅膐腶臰腸膇 膐腼腂臡腣臔腧腖腚腑腟腦臜腏腝腎腢腊腁 腝腭 腲腀 膳膟至臥腥臍腤膽腵腗腟腦臜腟腐腢腊腏臣臀腖腳腁 腘腥臊腥 0.4 腎腱 1 keV 腪腥 腦腀 膼膯膔腟腯臟膭臶腥 60腇 臱臶腯臝腮腀 臰膯膔腟腦腓腱腣臩腐腊腁 腒腥腰腋腢臊腥臣臀 1970 臻臨腎腱臫腱腴腞腊腙腏 1) 腀 腘腥臊膷腦 腊腭腚腣膜腓腴腞腊腢腊腁 臹 X 臊腥 膪膷腶膜腕腀 腒腥臊腶臎腖腠膻腌腱腴腳膯膚 膳腥臥臛腥 50腇 膓臑腶臝腮腳膼膘膉膎膁膋腥臓臧腶臫腳腒腠腏腟腐腴腧腀 膯膚膳腥臩膩臈臏膣腥膸臒腶腠腱腌腀 膯膚膳腥膱臘臃腥腳腒腠腏腟腐腳腁 膓膙腟腦腀 X 臊腥膳膟臘CXB (Cosmic X-ray Background) 腠膹腨腀 2 keV 膓膙腥 X 臊腶 SXDB (Soft X-ray Di#use Back- ground) 腠膹腩腁 2. X 腑腖腍腗腎腈腔腓 SXDB 臊膷腥膜腣腠腜腞臍腢膤臢腥 膕腝腏腀 膋腷腽膑腺膑膏膌腂膂腂膵臎膦腶臷膿腕 1999 臻腥膑腾膄膅臉膶腟腉腳腁 腒腴腦腀 腸膇膐 腼腂膜臼 10 eV 腠腊腋臯臚膺膤臢腟腉 腲腀 SXDB 腥臬腣膼膞致腕腙自臠 (C K>)腀 臂臠 (O K>>,O K>>>)腀 膇腹膒 (Ne >M) 腢腡腥膫臞腶臐 腮腞膠腣膵臎腕腙 2) 腁 腒腴腣腰腲 SXDB 臬腥 CXB 膓膟腥臘腏腀 膫臞臊腥臌腭腲腟腉腳腒 腠腏膠臉腠腢腲腀 腒腥膫臞腏 100 臶腎腱 200 臶腥膘臶腥膼膘膉膎膁膋腎腱腥臊腟腉腳腒腠腶 臆腕腙腁 腭腙腀 ROSAT 膗臙腣腰腳膤臢腟 SXDB 腥臟至 臖腏臁臘腓腴腀 SXDB 腥膰膥臲腢腆腃腏腵 腎腜腞腐腙 3) 腁臖 1 ROSAT 3/4 keV 膈膒膆 0.41.2 keV腄腥臊腥臟至臖腟腉腳腁 膯 2009 6 370

Transcript of 公益社団法人 日本天文学会 · X 183 0036 1 10 e-mail: [email protected] 1keV X...

Page 1: 公益社団法人 日本天文学会 · X 183 0036 1 10 e-mail: yoshino@astro.isas.jaxa.jp 1keV X (SXDB: Soft X-ray Di#use Background) ˘40 ˇ ˆ˙˝˛˚˜ ! "#˘ $%&’() *+,-˘./0123456

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Page 2: 公益社団法人 日本天文学会 · X 183 0036 1 10 e-mail: yoshino@astro.isas.jaxa.jp 1keV X (SXDB: Soft X-ray Di#use Background) ˘40 ˇ ˆ˙˝˛˚˜ ! "#˘ $%&’() *+,-˘./0123456

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Page 4: 公益社団法人 日本天文学会 · X 183 0036 1 10 e-mail: yoshino@astro.isas.jaxa.jp 1keV X (SXDB: Soft X-ray Di#use Background) ˘40 ˇ ˆ˙˝˛˚˜ ! "#˘ $%&’() *+,-˘./0123456

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Page 5: 公益社団法人 日本天文学会 · X 183 0036 1 10 e-mail: yoshino@astro.isas.jaxa.jp 1keV X (SXDB: Soft X-ray Di#use Background) ˘40 ˇ ˆ˙˝˛˚˜ ! "#˘ $%&’() *+,-˘./0123456

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Planck ��¡� Michael Bauer �� Wisconsin��� Dan McCammon ��� Massachusetts��� Daniel Wang ��� Colorado��� Yangsen

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A Study of Soft X-ray Di#use Background

with Suzaku

Tomotaka YOSHINO

NEC Corporation, Nisshincho 1�10, Fuchu, Tokyo

183�0036, Japan

Abstract : The soft X-ray sky below 1 keV

contains di#use background emission (SXDB:

Soft X-ray Di#use Emission) which can not be

resolved into individual objects. The origin of

the SXDB were not fully understood for these 40

years. We investigated the oxygen emission line

intensities in the SXDB in the several sky fields

with Suzaku. A spatially uniform component

which comes from the solar neighborhood is

discovered. The remaining component whose

intensities shows direction dependence can be

considered to come from the galactic halo, which

is filled with hot plasma with a narrow tempera-

ture range between 2.0 and 2.7 million degree.

º 102» º 6¼ 375