{"created":"2023-06-20T15:03:29.028361+00:00","id":32697,"links":{},"metadata":{"_buckets":{"deposit":"f1b2a72c-4235-48d0-be7d-3ee143a6fad5"},"_deposit":{"created_by":1,"id":"32697","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"32697"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00032697","sets":["1887:1890","1896:1898:1899:1911"]},"author_link":["410947","410946","410945","410948"],"item_9_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Possibilities of Grawity Wave Detection in Planetary Mission Satellites"}]},"item_9_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1982-06","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"45","bibliographicPageStart":"1","bibliographicVolumeNumber":"5","bibliographic_titles":[{"bibliographic_title":"宇宙科学研究所報告"}]}]},"item_9_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"1979,1980年 Hellings et at により, 米国の惑星探査船 Voyager を使って, その周波数窓が 2×10^<-4> Hz 以上の重力波検出実験が行なわれた。 結果は, 500 sec のサンプルタイムに於いて 3×10^<-14> のレベルでバーストを検出できなかった事, 及び重力波のバックグラウンドがパワースペクトルで Sh=10^<-27>f^<-1>[Hz^<-1>]のレベルで検出できなかった事が報告された。しかし, これらは, 銀河中心核の collapse を仮定した時のバーストや宇宙の進化論からくる重力波のバックグラウンドの予想に対して後 1&acd;2 ケタと迫っている。もし我々が 1) 衛星との電波リンクを up/down とも X-band にする 2) 高安定の水素メーザーの使用(100 sec のサンプルタイムの時安定度&acd;10^<-15>) 3) 衛星, 地球間の距離を約 4.A.U 取る 以上を達成できれば, Voyager の実験と同等以上の結果を期待できる。 更に上の項目に加え, 4) 大気のゆらぎから来るノイズを除去する事 5) X-band 以上のより高い周波数を持ったリンクの使用 6) 10^<-5>cm/s の精度で衛星のゆらぎをモニターするため Drag Free衛星の使用 7) 10^<-5>cm/s の精度で地上のアンテナの動きをモニターする機能の検討 8) 衛星, 地球間の距離を4.A.U以上取る事 以上の改善をほどこせば, 重力波のバーストや, 重力波のバックグラウンドを検出できよう。","subitem_description_type":"Abstract"}]},"item_9_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"In 1979 & 1980,the experiment to detect VLF band gravitational wave detection (&gsim;2×10^<-4>Hz) with Voyager-I was performed by Hellings et al. No gravity wave bursts were seen with an amplitude higher than 3×10^<-14> at 500 sec sample times, and no gravity wave background was detected with an amplitude of the power sepctrum density higher than Sn=10^<-27>f^<-1>[Hz^<-1>]. These values are only by one or two order of magnitude larger than the predicted value coming from possible galactic nuclei collapse & cosmic evolution. If we can realize 1) the use of X-band link with both up/down link 2) the use of highly stable hydrogen maser clock (&acd;10^<-15> at 100 sec sample times)3) the distance of about 4. A. U between spacecraft and the earth, the more advanced results will be expected. Further more, in addition to these, if the following items can be accomplished, 4) getting rid of the noise due to troposhere's scintilation, 5) the development of higher frequency band system, 6) the development of the Drag Free satellite system to monitor the spacecraft buffering with the accuracy of 10^<-5> cm/sec, 7) the achievement of monitoring system for the antenna's motion of the ground station with the same accuracy, and 8) the longer distance than 4.A.U, we may be able to detect and confirm the gravity wave background & gravity wave bursts.","subitem_description_type":"Other"}]},"item_9_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: SA0166201000","subitem_description_type":"Other"}]},"item_9_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙科学研究所"}]},"item_9_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0285-2853","subitem_source_identifier_type":"ISSN"}]},"item_9_source_id_24":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00354474","subitem_source_identifier_type":"NCID"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"河島, 信樹"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"中井, 豊"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"KAWASHIMA, Nobuki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"NAKAI, Yutaka","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":"2020-01-24"}],"displaytype":"detail","filename":"SA0166201.pdf","filesize":[{"value":"2.5 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"SA0166201.pdf","url":"https://jaxa.repo.nii.ac.jp/record/32697/files/SA0166201.pdf"},"version_id":"542dbc78-15d0-4ed8-9ebe-9a93ea886606"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"惑星探査ミッションにおける重力波検出の可能性","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"惑星探査ミッションにおける重力波検出の可能性"}]},"item_type_id":"9","owner":"1","path":["1890","1911"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"32697","relation_version_is_last":true,"title":["惑星探査ミッションにおける重力波検出の可能性"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T00:26:15.642489+00:00"}