{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:VCUSC5TSLYQNES5XJEOG5PXRTL","short_pith_number":"pith:VCUSC5TS","schema_version":"1.0","canonical_sha256":"a8a92176725e20d24bb7491c6ebef19ac5a757974f762a32761f9c76a265e1bf","source":{"kind":"arxiv","id":"1611.03659","version":1},"attestation_state":"computed","paper":{"title":"Spectroscopic observations of active solar-analog stars having high X-ray luminosity, as a proxy of superflare stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Daisaku Nogami, Hiroyuki Maehara, Kazunari Shibata, Kosuke Namekata, Satoshi Honda, Shota Notsu, Yuta Notsu","submitted_at":"2016-11-11T11:21:46Z","abstract_excerpt":"Recent studies of solar-type superflare stars have suggested that even old slowly rotating stars similar to the Sun can have large starspots and superflares. We conducted high dispersion spectroscopy of 49 nearby solar-analog stars (G-type main sequence stars with $T_{\\rm{eff}}\\approx5,600\\sim6,000$ K) identified as ROSAT soft X-ray sources, which are not binary stars from the previous studies. We expected that these stars can be used as a proxy of bright solar-analog superflare stars, since superflare stars are expected to show strong X-ray luminosity. More than half (37) of the 49 target sta"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1611.03659","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-11-11T11:21:46Z","cross_cats_sorted":[],"title_canon_sha256":"5af018779c4fe46d9dac577345539fb8f37b6dad244e6f4ed9f09b8b4ad545a7","abstract_canon_sha256":"6ee7601a1626034ea1c2a26ae9fb4ea01fa7b16def15b6e30226e85055c5a9cd"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:52:07.986079Z","signature_b64":"9L4ygeoVso0yKq1tt+CDbbz3I3MTvKIUrrcAqf941+TLh3SJlvyWPCjR3+koHkAsa5XfgSfDwFqSHiriUBVZCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a8a92176725e20d24bb7491c6ebef19ac5a757974f762a32761f9c76a265e1bf","last_reissued_at":"2026-05-18T00:52:07.985455Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:52:07.985455Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spectroscopic observations of active solar-analog stars having high X-ray luminosity, as a proxy of superflare stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Daisaku Nogami, Hiroyuki Maehara, Kazunari Shibata, Kosuke Namekata, Satoshi Honda, Shota Notsu, Yuta Notsu","submitted_at":"2016-11-11T11:21:46Z","abstract_excerpt":"Recent studies of solar-type superflare stars have suggested that even old slowly rotating stars similar to the Sun can have large starspots and superflares. We conducted high dispersion spectroscopy of 49 nearby solar-analog stars (G-type main sequence stars with $T_{\\rm{eff}}\\approx5,600\\sim6,000$ K) identified as ROSAT soft X-ray sources, which are not binary stars from the previous studies. We expected that these stars can be used as a proxy of bright solar-analog superflare stars, since superflare stars are expected to show strong X-ray luminosity. More than half (37) of the 49 target sta"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.03659","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1611.03659","created_at":"2026-05-18T00:52:07.985556+00:00"},{"alias_kind":"arxiv_version","alias_value":"1611.03659v1","created_at":"2026-05-18T00:52:07.985556+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.03659","created_at":"2026-05-18T00:52:07.985556+00:00"},{"alias_kind":"pith_short_12","alias_value":"VCUSC5TSLYQN","created_at":"2026-05-18T12:30:48.956258+00:00"},{"alias_kind":"pith_short_16","alias_value":"VCUSC5TSLYQNES5X","created_at":"2026-05-18T12:30:48.956258+00:00"},{"alias_kind":"pith_short_8","alias_value":"VCUSC5TS","created_at":"2026-05-18T12:30:48.956258+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VCUSC5TSLYQNES5XJEOG5PXRTL","json":"https://pith.science/pith/VCUSC5TSLYQNES5XJEOG5PXRTL.json","graph_json":"https://pith.science/api/pith-number/VCUSC5TSLYQNES5XJEOG5PXRTL/graph.json","events_json":"https://pith.science/api/pith-number/VCUSC5TSLYQNES5XJEOG5PXRTL/events.json","paper":"https://pith.science/paper/VCUSC5TS"},"agent_actions":{"view_html":"https://pith.science/pith/VCUSC5TSLYQNES5XJEOG5PXRTL","download_json":"https://pith.science/pith/VCUSC5TSLYQNES5XJEOG5PXRTL.json","view_paper":"https://pith.science/paper/VCUSC5TS","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1611.03659&json=true","fetch_graph":"https://pith.science/api/pith-number/VCUSC5TSLYQNES5XJEOG5PXRTL/graph.json","fetch_events":"https://pith.science/api/pith-number/VCUSC5TSLYQNES5XJEOG5PXRTL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VCUSC5TSLYQNES5XJEOG5PXRTL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VCUSC5TSLYQNES5XJEOG5PXRTL/action/storage_attestation","attest_author":"https://pith.science/pith/VCUSC5TSLYQNES5XJEOG5PXRTL/action/author_attestation","sign_citation":"https://pith.science/pith/VCUSC5TSLYQNES5XJEOG5PXRTL/action/citation_signature","submit_replication":"https://pith.science/pith/VCUSC5TSLYQNES5XJEOG5PXRTL/action/replication_record"}},"created_at":"2026-05-18T00:52:07.985556+00:00","updated_at":"2026-05-18T00:52:07.985556+00:00"}