{"created":"2021-03-01T06:17:12.363334+00:00","id":662,"links":{},"metadata":{"_buckets":{"deposit":"f9a63cf7-55df-47dd-895c-1751eb287258"},"_deposit":{"id":"662","owners":[],"pid":{"revision_id":0,"type":"depid","value":"662"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00000662","sets":["75:76:77","9:10:11"]},"item_2_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2014-04-30","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"17","bibliographicPageStart":"171102","bibliographicVolumeNumber":"112","bibliographic_titles":[{"bibliographic_title":"Physical Review Letters"}]}]},"item_2_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Magnetars are a special type of neutron stars, considered to have extreme dipole magnetic fields reaching ∼10^11  T. The magnetar 4U 0142+61, one of the prototypes of this class, was studied in broadband x rays (0.5–70 keV) with the Suzaku observatory. In hard x rays (15–40 keV), its 8.69 sec pulsations suffered slow phase modulations by ±0.7  sec, with a period of ∼15  h. When this effect is interpreted as free precession of the neutron star, the object is inferred to deviate from spherical symmetry by ∼1.6×10^−4 in its moments of inertia. This deformation, when ascribed to magnetic pressure, suggests a strong toroidal magnetic field, ∼10^12  T, residing inside the object. This provides one of the first observational approaches towards toroidal magnetic fields of magnetars.","subitem_description_type":"Abstract"}]},"item_2_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"UTokyo Research掲載「宇宙で最強な磁石天体が、磁力でわずかに変形している兆候を発見」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/the-strongest-magnetic-stars-are-possibly-deformed/","subitem_description_type":"Other"},{"subitem_description":"UTokyo Research \"The strongest magnetic stars are possibly deformed\" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/the-strongest-magnetic-stars-are-possibly-deformed/","subitem_description_type":"Other"}]},"item_2_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"American Physical Society"}]},"item_2_relation_11":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.1103/Phys RevLett.112.171 102","subitem_relation_type_select":"DOI"}}]},"item_2_relation_25":{"attribute_name":"関係URI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/the-strongest-magnetic-stars-are-possibly-deformed/","subitem_relation_type_select":"URI"}},{"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/the-strongest-magnetic-stars-are-possibly-deformed/","subitem_relation_type_select":"URI"}},{"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.171102","subitem_relation_type_select":"URI"}}]},"item_2_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"(c) 2014 American Physical Society"}]},"item_2_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA00773679","subitem_source_identifier_type":"NCID"}]},"item_2_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0031-9007","subitem_source_identifier_type":"ISSN"},{"subitem_source_identifier":"1079-7114","subitem_source_identifier_type":"ISSN"}]},"item_2_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"Department of Physics, Graduate School of Science, the University of Tokyo"},{"subitem_text_value":"Research Center for the Early Universe, Graduate School of Science, the University of Tokyo"},{"subitem_text_value":"MAXI team, RIKEN"},{"subitem_text_value":"High Energy Astrophysics Laboratory, RIKEN Nishina Center"},{"subitem_text_value":"NASA Goddard Space Flight Center, Astrophysics Science Division"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Makishima, K."}],"nameIdentifiers":[{"nameIdentifier":"2204","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Enoto, T."}],"nameIdentifiers":[{"nameIdentifier":"2205","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hiraga, J. S."}],"nameIdentifiers":[{"nameIdentifier":"2206","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nakano, T."}],"nameIdentifiers":[{"nameIdentifier":"2207","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nakazawa, K."}],"nameIdentifiers":[{"nameIdentifier":"2208","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sakurai, S."}],"nameIdentifiers":[{"nameIdentifier":"2209","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sasano, M."}],"nameIdentifiers":[{"nameIdentifier":"2210","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Murakami, H"}],"nameIdentifiers":[{"nameIdentifier":"2211","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-05-30"}],"displaytype":"detail","filename":"PhysRevLett.112.171102.pdf","filesize":[{"value":"1.2 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"PhysRevLett.112.171102.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/662/files/PhysRevLett.112.171102.pdf"},"version_id":"039230b1-3b02-4899-810a-46883a608e78"}]},"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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Possible Evidence for Free Precession of a Strongly Magnetized Neutron Star in the Magnetar 4U 0142+61","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Possible Evidence for Free Precession of a Strongly Magnetized Neutron Star in the Magnetar 4U 0142+61"}]},"item_type_id":"2","owner":"1","path":["11","77"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-02-04"},"publish_date":"2015-02-04","publish_status":"0","recid":"662","relation_version_is_last":true,"title":["Possible Evidence for Free Precession of a Strongly Magnetized Neutron Star in the Magnetar 4U 0142+61"],"weko_creator_id":"1","weko_shared_id":2},"updated":"2022-12-19T03:41:39.345567+00:00"}