{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:JD5D7CNP3EJE6QCFFMSU4WKBWU","short_pith_number":"pith:JD5D7CNP","schema_version":"1.0","canonical_sha256":"48fa3f89afd9124f40452b254e5941b50f0abdef90091e9115dfc241a7e77b83","source":{"kind":"arxiv","id":"1908.08066","version":1},"attestation_state":"computed","paper":{"title":"Consistency of the Infrared Variability of Sgr A* over 22 years","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"A. C. Mangian, A. Dehghanfar, A. Hees, A. K. Gautam, A. M. Ghez, B. N. Sitarski, E. E. Becklin, E. Gallego-Cano, G. Witzel, J. Lu, K. Matthews, M. R. Morris, M. W. Hosek Jr, R. Sch\\\"odel, S. Jia, T. Do, Zhuo Chen","submitted_at":"2019-08-21T18:00:29Z","abstract_excerpt":"We report new infrared measurements of the supermassive black hole at the Galactic Center, Sgr A*, over a decade that was previously inaccessible at these wavelengths. This enables a variability study that addresses variability timescales that are ten times longer than earlier published studies. Sgr A* was initially detected in the near-infrared with adaptive optics observations in 2002. While earlier data exists in form of speckle imaging (1995 - 2005), Sgr A* was not detected in the initial analysis. Here, we improved our speckle holography analysis techniques. This has improved the sensitiv"},"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":"1908.08066","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-08-21T18:00:29Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"988a1273b83035cbc363a1792c9d394e8435f5f396a5dbdcf5ed7585e7ddb03a","abstract_canon_sha256":"158cd4ca95cf841a17e9c5b7a1553834f6565d731ad98a5ee83dddfca51b4a3d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:06:54.807766Z","signature_b64":"QYAc/fFaCKz8wrLNVBGjPMwmr9bkJwuaWOYHYopTh2CAKIUcpzkmd/BtUqFKwfSvXgO+N1rRi3Bid11b6SwwAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"48fa3f89afd9124f40452b254e5941b50f0abdef90091e9115dfc241a7e77b83","last_reissued_at":"2026-07-05T00:06:54.807307Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:06:54.807307Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Consistency of the Infrared Variability of Sgr A* over 22 years","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"A. C. Mangian, A. Dehghanfar, A. Hees, A. K. Gautam, A. M. Ghez, B. N. Sitarski, E. E. Becklin, E. Gallego-Cano, G. Witzel, J. Lu, K. Matthews, M. R. Morris, M. W. Hosek Jr, R. Sch\\\"odel, S. Jia, T. Do, Zhuo Chen","submitted_at":"2019-08-21T18:00:29Z","abstract_excerpt":"We report new infrared measurements of the supermassive black hole at the Galactic Center, Sgr A*, over a decade that was previously inaccessible at these wavelengths. This enables a variability study that addresses variability timescales that are ten times longer than earlier published studies. Sgr A* was initially detected in the near-infrared with adaptive optics observations in 2002. While earlier data exists in form of speckle imaging (1995 - 2005), Sgr A* was not detected in the initial analysis. Here, we improved our speckle holography analysis techniques. This has improved the sensitiv"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.08066","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/1908.08066/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":"1908.08066","created_at":"2026-07-05T00:06:54.807370+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.08066v1","created_at":"2026-07-05T00:06:54.807370+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.08066","created_at":"2026-07-05T00:06:54.807370+00:00"},{"alias_kind":"pith_short_12","alias_value":"JD5D7CNP3EJE","created_at":"2026-07-05T00:06:54.807370+00:00"},{"alias_kind":"pith_short_16","alias_value":"JD5D7CNP3EJE6QCF","created_at":"2026-07-05T00:06:54.807370+00:00"},{"alias_kind":"pith_short_8","alias_value":"JD5D7CNP","created_at":"2026-07-05T00:06:54.807370+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/JD5D7CNP3EJE6QCFFMSU4WKBWU","json":"https://pith.science/pith/JD5D7CNP3EJE6QCFFMSU4WKBWU.json","graph_json":"https://pith.science/api/pith-number/JD5D7CNP3EJE6QCFFMSU4WKBWU/graph.json","events_json":"https://pith.science/api/pith-number/JD5D7CNP3EJE6QCFFMSU4WKBWU/events.json","paper":"https://pith.science/paper/JD5D7CNP"},"agent_actions":{"view_html":"https://pith.science/pith/JD5D7CNP3EJE6QCFFMSU4WKBWU","download_json":"https://pith.science/pith/JD5D7CNP3EJE6QCFFMSU4WKBWU.json","view_paper":"https://pith.science/paper/JD5D7CNP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.08066&json=true","fetch_graph":"https://pith.science/api/pith-number/JD5D7CNP3EJE6QCFFMSU4WKBWU/graph.json","fetch_events":"https://pith.science/api/pith-number/JD5D7CNP3EJE6QCFFMSU4WKBWU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JD5D7CNP3EJE6QCFFMSU4WKBWU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JD5D7CNP3EJE6QCFFMSU4WKBWU/action/storage_attestation","attest_author":"https://pith.science/pith/JD5D7CNP3EJE6QCFFMSU4WKBWU/action/author_attestation","sign_citation":"https://pith.science/pith/JD5D7CNP3EJE6QCFFMSU4WKBWU/action/citation_signature","submit_replication":"https://pith.science/pith/JD5D7CNP3EJE6QCFFMSU4WKBWU/action/replication_record"}},"created_at":"2026-07-05T00:06:54.807370+00:00","updated_at":"2026-07-05T00:06:54.807370+00:00"}