{"created":"2023-06-20T14:38:40.606807+00:00","id":5265,"links":{},"metadata":{"_buckets":{"deposit":"d385b89b-31b0-4783-a58c-e9ef0b630c69"},"_deposit":{"created_by":1,"id":"5265","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"5265"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00005265","sets":["1887:1891","9:789:956:959"]},"author_link":["25413","25416","25414","25415","25412","25417"],"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2009-02-27","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"131","bibliographicPageStart":"126","bibliographicVolumeNumber":"JAXA-SP-08-014E","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構特別資料"},{"bibliographic_title":"JAXA Special Publication: Astrophysics with All-Sky X-Ray observations: 3rd International MAXI Workshop","bibliographic_titleLang":"en"}]}]},"item_5_description_15":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）（英）","attribute_value_mlt":[{"subitem_description":"Astrophysics with All-Sky X-Ray observations: 3rd International MAXI Workshop (RIKEN, 10-12 June 2008)","subitem_description_type":"Other"}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Global three-dimensional magnetohydrodynamic simulations of black hole accretion disks enable us to study the time variabilities of black hole accretion disks without introducing the phenomenological alpha viscosity. Numerical simulations including optically thin radiative cooling revealed that when the disk luminosity exceeds 0.01 L(sub Edd), where L(sub Edd) is the Eddington luminosity, cooling instability taking place in the low/hard state disk creates a magnetically supported, optically thin luminous disk (high/hard state disk) whose X-ray luminosity exceeds 0.1 L(sub Edd) when the accretion rate continues to increase. We found that when the outer region of the disk (r > 20 r(sub s) , where r(sub s) is the Schwarzschild radius) undergoes this transition, an inner torus is formed in r < 10 r(sub s) . The inner torus produces low-frequency quasi-periodic oscillations (QPOs) and high-frequency QPOs whose frequency are 1 - 10 Hz, and ca. 100 Hz, respectively for stellar mass black holes, and 10(exp -6) - 10(exp -5) Hz, and ca. 10(exp -4) Hz, respectively for Seyfert galaxies with black hole mass 10(exp 7) solar mass. When the magnetic energy stored in the disk is released, the disk completes the transition to an optically thick, high/soft state. Monitoring observations by MAXI will detect these transitions in stellar mass black holes and QPOs in AGNs.","subitem_description_type":"Other"}]},"item_5_description_19":{"attribute_name":"内容記述（英）","attribute_value_mlt":[{"subitem_description":"Physical characteristics: Original contains color illustrations","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0064306026","subitem_description_type":"Other"}]},"item_5_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: JAXA-SP-08-014E","subitem_description_type":"Other"}]},"item_5_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構"}]},"item_5_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Japan Aerospace Exploration Agency (JAXA)"}]},"item_5_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1349-113X","subitem_source_identifier_type":"ISSN"}]},"item_5_source_id_24":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11984031","subitem_source_identifier_type":"NCID"}]},"item_5_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"千葉大学理学研究科物理学コース"},{"subitem_text_value":"国立天文台"},{"subitem_text_value":"千葉大学大学院自然科学研究科"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Department of Physics, Graduate School of Science, Chiba University"},{"subitem_text_language":"en","subitem_text_value":"National Astronomical Observatory"},{"subitem_text_language":"en","subitem_text_value":"Graduate School of Science and Technology, Chiba University"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"松元, 亮治"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"町田, 真美"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"小田, 寛"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Matsumoto, Ryoji","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Machida, Mami","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Oda, Hiroshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-01-16"}],"displaytype":"detail","filename":"64306026.pdf","filesize":[{"value":"1.3 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"64306026.pdf","url":"https://jaxa.repo.nii.ac.jp/record/5265/files/64306026.pdf"},"version_id":"132bece2-c9e5-43c8-a08a-01fbfbd4efcc"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Accretion : Accretion Disk - Black Hole - Magnetohydrodynamics - QPO","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"Variability science in accretion disk theory","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Variability science in accretion disk theory","subitem_title_language":"en"}]},"item_type_id":"5","owner":"1","path":["959","1891"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"5265","relation_version_is_last":true,"title":["Variability science in accretion disk theory"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T08:19:22.561657+00:00"}