{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:XF5XN32MPGOI4HURSPQJBQ2QMQ","short_pith_number":"pith:XF5XN32M","schema_version":"1.0","canonical_sha256":"b97b76ef4c799c8e1e9193e090c350641a46fbb8610101f2f3609a963befc791","source":{"kind":"arxiv","id":"2207.08395","version":1},"attestation_state":"computed","paper":{"title":"Optical Observations of the Nearby Type Ia Supernova 2021hpr","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Bingqing Zhang, Danzengluobu, Hong Wu, Lin Du, Pinsong Zhao, Tianmeng Zhang, Yinan Zhu, Yu Zhang, Zhitong Li","submitted_at":"2022-07-18T06:10:42Z","abstract_excerpt":"We present the optical photometric and spectroscopic observations of the nearby Type Ia supernova (SN) 2021hpr. The observations covered the phase of $-$14.37 to +63.68 days relative to its maximum luminosity in the $B$ band. The evolution of multiband light/color curves of SN 2021hpr is similar to that of normal Type Ia supernovae (SNe Ia) with the exception of some phases, especially a plateau phase that appeared in the $V-R$ color curve before peak luminosity, which resembles that of SN 2017cbv. The first spectrum we observed at t $\\sim -$14.4 days shows a higher velocity for the Si II $\\la"},"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":"2207.08395","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-07-18T06:10:42Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"11e9d15f84e8bc52a316af366a9d0144ddc4a5ffb23cfb988a084e74d1bb6277","abstract_canon_sha256":"6eb05dd651579f522e7a876cc0800baee0d84243b3e436fcf2bd63a30599d235"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:41:04.197396Z","signature_b64":"UAWCCz34WJwDkNkVrVgFnfxyPy+sry/AlDvl85KrkLpCbbmqUlhmovZiQW3lwc4x+odDeTUt4uDWefuQQ6e5CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b97b76ef4c799c8e1e9193e090c350641a46fbb8610101f2f3609a963befc791","last_reissued_at":"2026-07-05T04:41:04.196955Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:41:04.196955Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Optical Observations of the Nearby Type Ia Supernova 2021hpr","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Bingqing Zhang, Danzengluobu, Hong Wu, Lin Du, Pinsong Zhao, Tianmeng Zhang, Yinan Zhu, Yu Zhang, Zhitong Li","submitted_at":"2022-07-18T06:10:42Z","abstract_excerpt":"We present the optical photometric and spectroscopic observations of the nearby Type Ia supernova (SN) 2021hpr. The observations covered the phase of $-$14.37 to +63.68 days relative to its maximum luminosity in the $B$ band. The evolution of multiband light/color curves of SN 2021hpr is similar to that of normal Type Ia supernovae (SNe Ia) with the exception of some phases, especially a plateau phase that appeared in the $V-R$ color curve before peak luminosity, which resembles that of SN 2017cbv. The first spectrum we observed at t $\\sim -$14.4 days shows a higher velocity for the Si II $\\la"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.08395","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2207.08395/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2207.08395","created_at":"2026-07-05T04:41:04.197011+00:00"},{"alias_kind":"arxiv_version","alias_value":"2207.08395v1","created_at":"2026-07-05T04:41:04.197011+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.08395","created_at":"2026-07-05T04:41:04.197011+00:00"},{"alias_kind":"pith_short_12","alias_value":"XF5XN32MPGOI","created_at":"2026-07-05T04:41:04.197011+00:00"},{"alias_kind":"pith_short_16","alias_value":"XF5XN32MPGOI4HUR","created_at":"2026-07-05T04:41:04.197011+00:00"},{"alias_kind":"pith_short_8","alias_value":"XF5XN32M","created_at":"2026-07-05T04:41:04.197011+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/XF5XN32MPGOI4HURSPQJBQ2QMQ","json":"https://pith.science/pith/XF5XN32MPGOI4HURSPQJBQ2QMQ.json","graph_json":"https://pith.science/api/pith-number/XF5XN32MPGOI4HURSPQJBQ2QMQ/graph.json","events_json":"https://pith.science/api/pith-number/XF5XN32MPGOI4HURSPQJBQ2QMQ/events.json","paper":"https://pith.science/paper/XF5XN32M"},"agent_actions":{"view_html":"https://pith.science/pith/XF5XN32MPGOI4HURSPQJBQ2QMQ","download_json":"https://pith.science/pith/XF5XN32MPGOI4HURSPQJBQ2QMQ.json","view_paper":"https://pith.science/paper/XF5XN32M","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2207.08395&json=true","fetch_graph":"https://pith.science/api/pith-number/XF5XN32MPGOI4HURSPQJBQ2QMQ/graph.json","fetch_events":"https://pith.science/api/pith-number/XF5XN32MPGOI4HURSPQJBQ2QMQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XF5XN32MPGOI4HURSPQJBQ2QMQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XF5XN32MPGOI4HURSPQJBQ2QMQ/action/storage_attestation","attest_author":"https://pith.science/pith/XF5XN32MPGOI4HURSPQJBQ2QMQ/action/author_attestation","sign_citation":"https://pith.science/pith/XF5XN32MPGOI4HURSPQJBQ2QMQ/action/citation_signature","submit_replication":"https://pith.science/pith/XF5XN32MPGOI4HURSPQJBQ2QMQ/action/replication_record"}},"created_at":"2026-07-05T04:41:04.197011+00:00","updated_at":"2026-07-05T04:41:04.197011+00:00"}