{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2004:SA5QY3SYBBSYE6QOFM4F5CAG7J","short_pith_number":"pith:SA5QY3SY","schema_version":"1.0","canonical_sha256":"903b0c6e580865827a0e2b385e8806fa775458b648691f26ab6b681a6de7ea60","source":{"kind":"arxiv","id":"astro-ph/0403543","version":2},"attestation_state":"computed","paper":{"title":"Dark halo baryons not in ancient halo white dwarfs","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.C. Robin, C. Reyle, H. J. Mc Cracken, J.-C. Cuillandre, M. Creze, O. Le Fevre, V. Mohan, Y. Mellier","submitted_at":"2004-03-23T09:33:35Z","abstract_excerpt":"Having ruled out the possibility that stellar objects are the main contributor of the dark matter embedding galaxies, microlensing experiments cannot exclude the hypothesis that a significant fraction of the Milky Way dark halo might be made of MACHOs with masses in the range $0.5-0.8 \\msun$. Ancient white dwarfs are generally considered the most plausible candidates for such MACHOs. We report the results of a search for such white dwarfs in a proper motion survey covering a 0.16 sqd field at three epochs at high galactic latitude, and 0.938 sqd at two epochs at intermediate galactic latitude "},"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":"astro-ph/0403543","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-03-23T09:33:35Z","cross_cats_sorted":[],"title_canon_sha256":"12da1daf182d5000606d8e6653f4ae2d7eacc1f5ce7bb9ddbb9e4cde5f15543a","abstract_canon_sha256":"f7ccbc4492df94817847c5acb8fc58edfa02879e52253632c7c80f3404c72013"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:43:27.387587Z","signature_b64":"KZ3TJruY7Sx3DmIA9JXqmFwJouqXVJcswY8OgIgyS4OAlSfFt2E2zpKv9AzEBlXinI+53ZrHF9uEPBZenI1bDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"903b0c6e580865827a0e2b385e8806fa775458b648691f26ab6b681a6de7ea60","last_reissued_at":"2026-07-04T16:43:27.387117Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:43:27.387117Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Dark halo baryons not in ancient halo white dwarfs","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.C. Robin, C. Reyle, H. J. Mc Cracken, J.-C. Cuillandre, M. Creze, O. Le Fevre, V. Mohan, Y. Mellier","submitted_at":"2004-03-23T09:33:35Z","abstract_excerpt":"Having ruled out the possibility that stellar objects are the main contributor of the dark matter embedding galaxies, microlensing experiments cannot exclude the hypothesis that a significant fraction of the Milky Way dark halo might be made of MACHOs with masses in the range $0.5-0.8 \\msun$. Ancient white dwarfs are generally considered the most plausible candidates for such MACHOs. We report the results of a search for such white dwarfs in a proper motion survey covering a 0.16 sqd field at three epochs at high galactic latitude, and 0.938 sqd at two epochs at intermediate galactic latitude "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0403543","kind":"arxiv","version":2},"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/astro-ph/0403543/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":"astro-ph/0403543","created_at":"2026-07-04T16:43:27.387174+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0403543v2","created_at":"2026-07-04T16:43:27.387174+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0403543","created_at":"2026-07-04T16:43:27.387174+00:00"},{"alias_kind":"pith_short_12","alias_value":"SA5QY3SYBBSY","created_at":"2026-07-04T16:43:27.387174+00:00"},{"alias_kind":"pith_short_16","alias_value":"SA5QY3SYBBSYE6QO","created_at":"2026-07-04T16:43:27.387174+00:00"},{"alias_kind":"pith_short_8","alias_value":"SA5QY3SY","created_at":"2026-07-04T16:43:27.387174+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/SA5QY3SYBBSYE6QOFM4F5CAG7J","json":"https://pith.science/pith/SA5QY3SYBBSYE6QOFM4F5CAG7J.json","graph_json":"https://pith.science/api/pith-number/SA5QY3SYBBSYE6QOFM4F5CAG7J/graph.json","events_json":"https://pith.science/api/pith-number/SA5QY3SYBBSYE6QOFM4F5CAG7J/events.json","paper":"https://pith.science/paper/SA5QY3SY"},"agent_actions":{"view_html":"https://pith.science/pith/SA5QY3SYBBSYE6QOFM4F5CAG7J","download_json":"https://pith.science/pith/SA5QY3SYBBSYE6QOFM4F5CAG7J.json","view_paper":"https://pith.science/paper/SA5QY3SY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0403543&json=true","fetch_graph":"https://pith.science/api/pith-number/SA5QY3SYBBSYE6QOFM4F5CAG7J/graph.json","fetch_events":"https://pith.science/api/pith-number/SA5QY3SYBBSYE6QOFM4F5CAG7J/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SA5QY3SYBBSYE6QOFM4F5CAG7J/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SA5QY3SYBBSYE6QOFM4F5CAG7J/action/storage_attestation","attest_author":"https://pith.science/pith/SA5QY3SYBBSYE6QOFM4F5CAG7J/action/author_attestation","sign_citation":"https://pith.science/pith/SA5QY3SYBBSYE6QOFM4F5CAG7J/action/citation_signature","submit_replication":"https://pith.science/pith/SA5QY3SYBBSYE6QOFM4F5CAG7J/action/replication_record"}},"created_at":"2026-07-04T16:43:27.387174+00:00","updated_at":"2026-07-04T16:43:27.387174+00:00"}