{"links":{},"id":12048,"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00012048","sets":["581:677:687"]},"path":["687"],"owner":"1","recid":"12048","title":["シンプレクティック・レイトレーシング：ブラックホール時空での光線追跡"],"pubdate":{"attribute_name":"公開日","attribute_value":"2001-03-15"},"_buckets":{"deposit":"b2581c95-d234-47f1-b6a0-522895c31f58"},"_deposit":{"id":"12048","pid":{"type":"depid","value":"12048","revision_id":0},"owners":[1],"status":"published","created_by":1},"item_title":"シンプレクティック・レイトレーシング：ブラックホール時空での光線追跡","author_link":["0","0"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"シンプレクティック・レイトレーシング：ブラックホール時空での光線追跡"},{"subitem_title":"Symplectic Raytracing : Raytracing in Blackhole Spacetime","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"論文","subitem_subject_scheme":"Other"}]},"item_type_id":"2","publish_date":"2001-03-15","item_2_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"奈良先端科学技術大学院大学情報科学研究科"},{"subitem_text_value":"株式会社ネットシステムズ"},{"subitem_text_value":"奈良先端科学技術大学院大学情報科学研究科"},{"subitem_text_value":"奈良先端科学技術大学院大学情報科学研究科"}]},"item_2_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Graduate School of Information Science, Nara Institute of Science and Technology","subitem_text_language":"en"},{"subitem_text_value":"Net Systems, Inc.","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Information Science, Nara Institute of Science and Technology","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Information Science, Nara Institute of Science and Technology","subitem_text_language":"en"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"publish_status":"0","weko_shared_id":-1,"item_file_price":{"attribute_name":"Billing file","attribute_type":"file","attribute_value_mlt":[{"url":{"url":"https://ipsj.ixsq.nii.ac.jp/record/12048/files/IPSJ-JNL4203009.pdf"},"date":[{"dateType":"Available","dateValue":"2003-03-15"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-JNL4203009.pdf","filesize":[{"value":"1.4 MB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"660","billingrole":"5"},{"tax":["include_tax"],"price":"330","billingrole":"6"},{"tax":["include_tax"],"price":"0","billingrole":"8"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"ebd6468f-d410-4239-9f1a-b4bc4233e6de","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2001 by the Information Processing Society of Japan"}]},"item_2_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"佐藤哲"},{"creatorName":"岩佐, 英彦"},{"creatorName":"竹村, 治雄"},{"creatorName":"横矢, 直和"}],"nameIdentifiers":[{}]}]},"item_2_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Tetsu, Satoh","creatorNameLang":"en"},{"creatorName":"Hidehiko, Iwasa","creatorNameLang":"en"},{"creatorName":"Haruo, Takemura","creatorNameLang":"en"},{"creatorName":"Naokazu, Yokoya","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_2_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00116647","subitem_source_identifier_type":"NCID"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_6501","resourcetype":"journal article"}]},"item_2_source_id_11":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1882-7764","subitem_source_identifier_type":"ISSN"}]},"item_2_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"本論文では，ハミルトンの正準方程式を解くことで光線の軌道を計算し，ブラックホール周囲の光景を可視化するシンプレクティック・レイトレーシング法を提案する．従来手法では測地線の微分方程式を数値的に解いて光線の軌道を計算し，レイトレーシング法に基づいてブラックホールを可視化していた．しかし従来研究の中では，可視化結果の正当性に関する議論は行われていなかった．本論文では従来手法において理論的に発生する誤差を指摘し，その問題を解決するシンプレクティック・レイトレーシングを提案する．シンプレクティク・レイトレーシングでは，ハミルトン力学を用いて相対論的な光線の軌道を表す方程式を記述し，方程式をシンプレクティック数値解析法を用いて解いて光線追跡と交差判定を行う．提案手法を用いてブラックホール近傍の情景を描画し，従来手法との計算精度比較をした結果，シンプレクティック・レイトレーシングは結果の正確さの面で優位性があることが分かった．","subitem_description_type":"Other"}]},"item_2_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"This paper proposes a method of symplectic raytracing which visualizes a sightin the vicinity of the blackhole by solving Hamilton canonical equations.Conventional methods for visualizing the blackhole solve geodesic equationsnumerically to calculate orbits of the rays and visualize the blackholein accordance with a raytracing method.In past studies of blackhole visualization,correctness of the visualization results was not discussed.In this paper,we first point out theoretical errors in conventional methods and proposethe symplectic raytracing which solves the problem of those methods.Symplectic raytracing describes equations of orbits of the rayby using Hamiltonian dynamics and solves the equationsby using symplectic integrators for raytracing.Several images generated by the proposed method are shown andcorrectness of the calculation results is compared with the conventional method.Experimental results show the superiority of symplectic raytracing to the conventional methodin terms of the accuracy of results.","subitem_description_type":"Other"}]},"item_2_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"464","bibliographic_titles":[{"bibliographic_title":"情報処理学会論文誌"}],"bibliographicPageStart":"456","bibliographicIssueDates":{"bibliographicIssueDate":"2001-03-15","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3","bibliographicVolumeNumber":"42"}]},"relation_version_is_last":true,"item_2_alternative_title_2":{"attribute_name":"その他タイトル","attribute_value_mlt":[{"subitem_alternative_title":"数値シミュレーション"}]},"weko_creator_id":"1"},"created":"2025-01-18T22:46:30.683278+00:00","updated":"2025-01-23T01:51:05.458354+00:00"}