{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:K7GCQOQABVIMLT3GUSLUW4AQ2G","short_pith_number":"pith:K7GCQOQA","schema_version":"1.0","canonical_sha256":"57cc283a000d50c5cf66a4974b7010d194821fe46d201aaeefcd66f43729a3c9","source":{"kind":"arxiv","id":"1607.01772","version":1},"attestation_state":"computed","paper":{"title":"X-Rays Beware: The Deepest Chandra Catalogue of Point Sources in M31","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"N. Vulic, P. Barmby, S. C. Gallagher","submitted_at":"2016-07-06T19:59:59Z","abstract_excerpt":"This study represents the most sensitive Chandra X-ray point source catalogue of M31. Using 133 publicly available Chandra ACIS-I/S observations totalling ~1 Ms, we detected 795 X-ray sources in the bulge, northeast, and southwest fields of M31, covering an area of approximately 0.6 deg$^{2}$, to a limiting unabsorbed 0.5-8.0 keV luminosity of $10^{34}$ erg/s. In the inner bulge, where exposure is approximately constant, X-ray fluxes represent average values because they were determined from many observations over a long period of time. Similarly, our catalogue is more complete in the bulge fi"},"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":"1607.01772","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-07-06T19:59:59Z","cross_cats_sorted":[],"title_canon_sha256":"ef027bc30fa6b9850cc24788b6be783c60e82f74632954af55afed75edc32bde","abstract_canon_sha256":"c187559c7d183b97155fa29eee92de64ca5badc37bde007c4373d1770f1e5665"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:25.533084Z","signature_b64":"q0TjsXgH7mvhO+2Ozmtoc51GabCMZBlVL9lH2yYIUgpNhDbuE/CVSScdYcQzcASAnlDCij6Trykf2ZtdXp9eCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"57cc283a000d50c5cf66a4974b7010d194821fe46d201aaeefcd66f43729a3c9","last_reissued_at":"2026-05-18T01:11:25.532618Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:25.532618Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"X-Rays Beware: The Deepest Chandra Catalogue of Point Sources in M31","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"N. Vulic, P. Barmby, S. C. Gallagher","submitted_at":"2016-07-06T19:59:59Z","abstract_excerpt":"This study represents the most sensitive Chandra X-ray point source catalogue of M31. Using 133 publicly available Chandra ACIS-I/S observations totalling ~1 Ms, we detected 795 X-ray sources in the bulge, northeast, and southwest fields of M31, covering an area of approximately 0.6 deg$^{2}$, to a limiting unabsorbed 0.5-8.0 keV luminosity of $10^{34}$ erg/s. In the inner bulge, where exposure is approximately constant, X-ray fluxes represent average values because they were determined from many observations over a long period of time. Similarly, our catalogue is more complete in the bulge fi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.01772","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":"1607.01772","created_at":"2026-05-18T01:11:25.532696+00:00"},{"alias_kind":"arxiv_version","alias_value":"1607.01772v1","created_at":"2026-05-18T01:11:25.532696+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.01772","created_at":"2026-05-18T01:11:25.532696+00:00"},{"alias_kind":"pith_short_12","alias_value":"K7GCQOQABVIM","created_at":"2026-05-18T12:30:25.849896+00:00"},{"alias_kind":"pith_short_16","alias_value":"K7GCQOQABVIMLT3G","created_at":"2026-05-18T12:30:25.849896+00:00"},{"alias_kind":"pith_short_8","alias_value":"K7GCQOQA","created_at":"2026-05-18T12:30:25.849896+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/K7GCQOQABVIMLT3GUSLUW4AQ2G","json":"https://pith.science/pith/K7GCQOQABVIMLT3GUSLUW4AQ2G.json","graph_json":"https://pith.science/api/pith-number/K7GCQOQABVIMLT3GUSLUW4AQ2G/graph.json","events_json":"https://pith.science/api/pith-number/K7GCQOQABVIMLT3GUSLUW4AQ2G/events.json","paper":"https://pith.science/paper/K7GCQOQA"},"agent_actions":{"view_html":"https://pith.science/pith/K7GCQOQABVIMLT3GUSLUW4AQ2G","download_json":"https://pith.science/pith/K7GCQOQABVIMLT3GUSLUW4AQ2G.json","view_paper":"https://pith.science/paper/K7GCQOQA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1607.01772&json=true","fetch_graph":"https://pith.science/api/pith-number/K7GCQOQABVIMLT3GUSLUW4AQ2G/graph.json","fetch_events":"https://pith.science/api/pith-number/K7GCQOQABVIMLT3GUSLUW4AQ2G/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/K7GCQOQABVIMLT3GUSLUW4AQ2G/action/timestamp_anchor","attest_storage":"https://pith.science/pith/K7GCQOQABVIMLT3GUSLUW4AQ2G/action/storage_attestation","attest_author":"https://pith.science/pith/K7GCQOQABVIMLT3GUSLUW4AQ2G/action/author_attestation","sign_citation":"https://pith.science/pith/K7GCQOQABVIMLT3GUSLUW4AQ2G/action/citation_signature","submit_replication":"https://pith.science/pith/K7GCQOQABVIMLT3GUSLUW4AQ2G/action/replication_record"}},"created_at":"2026-05-18T01:11:25.532696+00:00","updated_at":"2026-05-18T01:11:25.532696+00:00"}