{"_buckets": {"deposit": "16a8e0e3-b888-4b15-bf21-0d963d2310fe"}, "_deposit": {"id": "24761", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "24761"}, "status": "published"}, "_oai": {"id": "oai:nagoya.repo.nii.ac.jp:00024761", "sets": ["881"]}, "author_link": ["73596", "73597"], "item_10_biblio_info_6": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2017-07-10", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "2", "bibliographicPageEnd": "101", "bibliographicPageStart": "101", "bibliographicVolumeNumber": "843", "bibliographic_titles": [{"bibliographic_title": "The Astrophysical Journal", "bibliographic_titleLang": "en"}]}]}, "item_10_description_4": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "The stability of the magnetic field in the solar corona is important for understanding the causes of solar eruptions.\u003cbr/\u003eAlthough various scenarios have been suggested to date, the tether-cutting reconnection scenario proposed by\u003cbr/\u003eMoore et al. is one of the widely accepted models to explain the onset process of solar eruptions. Although the\u003cbr/\u003etether-cutting reconnection scenario proposes that the sigmoidal field formed by internal reconnection is the\u003cbr/\u003emagnetic field in the pre-eruptive state, the stability of the sigmoidal field has not yet been investigated\u003cbr/\u003equantitatively. In this paper, in order to elucidate the stability problem of the pre-eruptive state, we developed a\u003cbr/\u003esimple numerical analysis in which the sigmoidal field is modeled by a double arc electric current loop and its\u003cbr/\u003estability is analyzed. As a result, we found that the double arc loop is more easily destabilized than the\u003cbr/\u003eaxisymmetric torus, and it becomes unstable even if the external field does not decay with altitude, which is in\u003cbr/\u003econtrast to the axisymmetric torus instability. This suggests that tether-cutting reconnection may well work as the\u003cbr/\u003eonset mechanism of solar eruptions, and if so, the critical condition for eruption under a certain geometry may be\u003cbr/\u003edetermined by a new type of instability rather than by the torus instability. Based on them, we propose a new type\u003cbr/\u003eof instability called double arc instability (DAI). We discuss the critical conditions for DAI and derive a new\u003cbr/\u003eparameter κ, defined as the product of the magnetic twist and the normalized flux of the tether-cutting\u003cbr/\u003ereconnection.", "subitem_description_language": "en", "subitem_description_type": "Abstract"}]}, "item_10_identifier_60": {"attribute_name": "URI", "attribute_value_mlt": [{"subitem_identifier_type": "DOI", "subitem_identifier_uri": "http://doi.org/10.3847/1538-4357/aa799b"}, {"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/2237/26983"}]}, "item_10_publisher_32": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "IOP publishing", "subitem_publisher_language": "en"}]}, "item_10_relation_11": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type": "isVersionOf", "subitem_relation_type_id": {"subitem_relation_type_id_text": "https://doi.org/10.3847/1538-4357/aa799b", "subitem_relation_type_select": "DOI"}}]}, "item_10_rights_12": {"attribute_name": "権利", "attribute_value_mlt": [{"subitem_rights": "© 2017 The American Astronomical Society", "subitem_rights_language": "en"}]}, "item_10_select_15": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_10_source_id_7": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "0004-637X", "subitem_source_identifier_type": "PISSN"}]}, "item_1615787544753": {"attribute_name": "出版タイプ", "attribute_value_mlt": [{"subitem_version_resource": "http://purl.org/coar/version/c_970fb48d4fbd8a85", "subitem_version_type": "VoR"}]}, "item_access_right": {"attribute_name": "アクセス権", "attribute_value_mlt": [{"subitem_access_right": "open access", "subitem_access_right_uri": "http://purl.org/coar/access_right/c_abf2"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Ishiguro, N.", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "73596", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Kusano, K.", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "73597", "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": "2018-02-22"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "pdf2.pdf", "filesize": [{"value": "548.5 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_note", "mimetype": "application/pdf", "size": 548500.0, "url": {"label": "pdf2.pdf", "objectType": "fulltext", "url": "https://nagoya.repo.nii.ac.jp/record/24761/files/pdf2.pdf"}, "version_id": "6caef316-a156-4001-bf20-b6b83e618a35"}]}, "item_keyword": {"attribute_name": "キーワード", "attribute_value_mlt": [{"subitem_subject": "instabilities", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Sun: corona", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Sun: coronal mass ejections (CMEs)", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Sun: filaments, prominences", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Sun: flares", "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": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Double Arc Instability in the Solar Corona", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Double Arc Instability in the Solar Corona", "subitem_title_language": "en"}]}, "item_type_id": "10", "owner": "1", "path": ["881"], "permalink_uri": "http://hdl.handle.net/2237/26983", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2017-10-04"}, "publish_date": "2017-10-04", "publish_status": "0", "recid": "24761", "relation": {}, "relation_version_is_last": true, "title": ["Double Arc Instability in the Solar Corona"], "weko_shared_id": -1}