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  1. B100 理学部/理学研究科
  2. B100d 学位論文
  3. 博士論文(理博・論理博)

The Global Value of the Hubble Constant by Observations of Sunyaev-Zel'dovich Clusters of Galaxies with ASCA

http://hdl.handle.net/2237/6459
http://hdl.handle.net/2237/6459
fa69934f-63a3-4b3b-aeae-93a2fa694567
名前 / ファイル ライセンス アクション
o3615.pdf o3615.pdf (13.1 MB)
Item type 学位論文 / Thesis or Dissertation(1)
公開日 2006-06-02
タイトル
タイトル The Global Value of the Hubble Constant by Observations of Sunyaev-Zel'dovich Clusters of Galaxies with ASCA
言語 en
その他のタイトル
その他のタイトル スニヤエフ-ゼルドビッチ効果を用いた大域的なハッブル定数の決定
言語 ja
著者 Furuzawa, Akihiro

× Furuzawa, Akihiro

WEKO 12259

en Furuzawa, Akihiro

Search repository
古澤, 彰浩

× 古澤, 彰浩

WEKO 12260

ja 古澤, 彰浩

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
抄録
内容記述 Cluster of galaxies is the largest gravitational bound system in the universe and the brightest X-ray emitter. From the velocity dispersion of member galaxies in clusters, it has been clear that clusters contain the large amount of incisible mass, so called 'dark matter', which is about ten times larger than the visible mass. Since the intracluster medium is dissipative, contrary galaxies in the cluster, the observation of the intracluster medium by X-ray is useful tool to inbestigate the gravitational mass and dark matter distribution and hence to understand the large scale structure of the universe. The observational of clusters of galaxies has anather importance for the cosmology. this is the observational and traditional approach for cosmology, 'the Hubble constant measurement'. The Hubble constant determines both the expansion timescale and the size of the universe. However, in spite of the fundamental parameter of the cosmology, the measured values are dispersed within factor; 50 km sec-1 Mpc-1 ~100km sec-1 Mpc-1. This dispersion has been caused by the various uncertainty; peculiar motion, absolute magnitude of standard candles, the calibration of 'destance ladder' method, underlying physical process and so on. The derivation from the X-ray and radio cluster observation using the SunyaevZel'dovich effect has advantages; small uncertainty of peculiar motion, clear underlying physical process. Furthermore, the destance to the cluster at the cosmological destance is available. We analyzed 6 destant clusters of galaxies observed with ASCA and obtained accurate averaged temperatures and luminosities Furthermore, we developed the method of the image analysis using the βmodel fitting in 2 energy bands including the effect of the XRT PSF, and obtained the structural parameters(θc,β) for each cluster. Using the complete radio data of the Sunyaev-Zel'dovich effect obtained with OVRO 40m single-dish radiometer and X-ray data obtained with only ASCA we obtained the 'global' value of the Hubble constant in the universe to be 68 22km sec-1 Mpc-1 from the destances of the clusters of galaxies, A2218, A665 and C10016 +16 in the redshift range from 0.17 to 0.54(597 Mpc -1.3 Gpc assuming H0 = 68 km sec-1 Mpc-1). It is the first time that the temperature, X-ray flux and the spatially distribution of temperature and density obtained with single mission are used for the Hubble constant determination.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 名古屋大学博士学位論文 学位の種類:博士(理学) (課程) 学位授与年月日:平成9年3月25日
言語 ja
内容記述タイプ Other
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_db06
タイプ doctoral thesis
書誌情報
発行日 1997-03-25
学位名
言語 ja
学位名 博士(理学)
学位授与機関
学位授与機関識別子Scheme kakenhi
学位授与機関識別子 13901
言語 ja
学位授与機関名 名古屋大学
言語 en
学位授与機関名 Nagoya University
学位授与年度
学位授与年度 1996
学位授与年月日
学位授与年月日 1997-03-25
学位授与番号
学位授与番号 甲第3615号
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/6459
識別子タイプ HDL
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