{"_buckets": {"deposit": "16618147-7986-4cbf-bd9c-1688e500807e"}, "_deposit": {"id": "24734", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "24734"}, "status": "published"}, "_oai": {"id": "oai:nagoya.repo.nii.ac.jp:00024734", "sets": ["881"]}, "author_link": ["73418", "73419", "73420", "73421", "73422"], "item_10_biblio_info_6": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2017-06-01", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "2", "bibliographicPageEnd": "L20", "bibliographicPageStart": "L20", "bibliographicVolumeNumber": "841", "bibliographic_titles": [{"bibliographic_title": "The Astrophysical Journal Letters", "bibliographic_titleLang": "en"}]}]}, "item_10_description_4": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "We report the discovery of a brightness enhancement in the center of a large sunspot umbra at a wavelength of 3 mm using the Atacama Large Millimeter/sub-millimeter Array (ALMA). Sunspots are among the most prominent features on the solar surface, but many of their aspects are surprisingly poorly understood. We analyzed a λ = 3 mm (100 GHz) mosaic image obtained by ALMA that includes a large sunspot within the active region AR12470, on 2015 December 16. The 3 mm map has a 300\u0027\u0027 × 300\u0027\u0027 field of view and 4farcs9 × 2farcs2 spatial resolution, which is the highest spatial resolution map of an entire sunspot in this frequency range. We find a gradient of 3 mm brightness from a high value in the outer penumbra to a low value in the inner penumbra/outer umbra. Within the inner umbra, there is a marked increase in 3 mm brightness temperature, which we call an umbral brightness enhancement. This enhanced emission corresponds to a temperature excess of 800 K relative to the surrounding inner penumbral region and coincides with excess brightness in the 1330 and 1400 Å slit-jaw images of the Interface Region Imaging Spectrograph (IRIS), adjacent to a partial lightbridge. This λ = 3 mm brightness enhancement may be an intrinsic feature of the sunspot umbra at chromospheric heights, such as a manifestation of umbral flashes, or it could be related to a coronal plume, since the brightness enhancement was coincident with the footpoint of a coronal loop observed at 171 Å.", "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": "https://doi.org/10.3847/2041-8213/aa71b5"}, {"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/2237/26956"}]}, "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/10.3847/2041-8213/aa71b5", "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": "2041-8205", "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": "Iwai, Kazumasa", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "73418", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Loukitcheva, Maria", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "73419", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Shimojo, Masumi", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "73420", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Solanki, Sami K.", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "73421", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "White, Stephen M.", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "73422", "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": "Iwai_2017_ApJL_841_L20.pdf", "filesize": [{"value": "3.6 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_note", "mimetype": "application/pdf", "size": 3600000.0, "url": {"label": "Iwai_2017_ApJL_841_L20.pdf", "objectType": "fulltext", "url": "https://nagoya.repo.nii.ac.jp/record/24734/files/Iwai_2017_ApJL_841_L20.pdf"}, "version_id": "c708f91d-c471-4dd3-896e-07fc4e33d1d0"}]}, "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": "ALMA Discovery of Solar Umbral Brightness Enhancement at λ=3mm", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "ALMA Discovery of Solar Umbral Brightness Enhancement at λ=3mm", "subitem_title_language": "en"}]}, "item_type_id": "10", "owner": "1", "path": ["881"], "permalink_uri": "http://hdl.handle.net/2237/26956", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2017-09-05"}, "publish_date": "2017-09-05", "publish_status": "0", "recid": "24734", "relation": {}, "relation_version_is_last": true, "title": ["ALMA Discovery of Solar Umbral Brightness Enhancement at λ=3mm"], "weko_shared_id": -1}