{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:UDIXZZ6HNC4DCOSALIXB4VOKCO","short_pith_number":"pith:UDIXZZ6H","schema_version":"1.0","canonical_sha256":"a0d17ce7c768b8313a405a2e1e55ca1384c8394c92f88a85b05e1d303133f9ba","source":{"kind":"arxiv","id":"1903.04657","version":1},"attestation_state":"computed","paper":{"title":"Astro2020 Science White Paper: Cosmology with a Space-Based Gravitational Wave Observatory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Craig Hogan, Daniel Holz, David Shoemaker, Ely Kovetz, Kelly Holley-Bockelmann, Mustafa Amin, Nicola Tamanini, Philippe Jetzer, Priya Natarajan, Robert Caldwell, Tristan Smith","submitted_at":"2019-03-11T23:43:49Z","abstract_excerpt":"There are two big questions cosmologists would like to answer -- How does the Universe work, and what are its origin and destiny? A long wavelength gravitational wave detector -- with million km interferometer arms, achievable only from space -- gives a unique opportunity to address both of these questions. A sensitive, mHz frequency observatory could use the inspiral and merger of massive black hole binaries as standard sirens, extending our ability to characterize the expansion history of the Universe from the onset of dark energy-domination out to a redshift z ~ 10. A low-frequency detector"},"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":"1903.04657","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-03-11T23:43:49Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"0bff3100735b406767349d334f1977c68a928330839017f55be7c7542283e1a8","abstract_canon_sha256":"2d0ac8fc144cc3f11d85c33689f12bc567365c94f07ad4f3916073ecb388b66f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:51:29.030550Z","signature_b64":"AhLOJ4t8IFiXYicc/J7UAxO/UV1vqFYyL+9c4c2/F7BzuEzewWTidUTqVQUhwQycNb2i8Z4GW8cm4jN/UMWQAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a0d17ce7c768b8313a405a2e1e55ca1384c8394c92f88a85b05e1d303133f9ba","last_reissued_at":"2026-05-17T23:51:29.030147Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:51:29.030147Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Astro2020 Science White Paper: Cosmology with a Space-Based Gravitational Wave Observatory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Craig Hogan, Daniel Holz, David Shoemaker, Ely Kovetz, Kelly Holley-Bockelmann, Mustafa Amin, Nicola Tamanini, Philippe Jetzer, Priya Natarajan, Robert Caldwell, Tristan Smith","submitted_at":"2019-03-11T23:43:49Z","abstract_excerpt":"There are two big questions cosmologists would like to answer -- How does the Universe work, and what are its origin and destiny? A long wavelength gravitational wave detector -- with million km interferometer arms, achievable only from space -- gives a unique opportunity to address both of these questions. A sensitive, mHz frequency observatory could use the inspiral and merger of massive black hole binaries as standard sirens, extending our ability to characterize the expansion history of the Universe from the onset of dark energy-domination out to a redshift z ~ 10. A low-frequency detector"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.04657","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":"1903.04657","created_at":"2026-05-17T23:51:29.030204+00:00"},{"alias_kind":"arxiv_version","alias_value":"1903.04657v1","created_at":"2026-05-17T23:51:29.030204+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.04657","created_at":"2026-05-17T23:51:29.030204+00:00"},{"alias_kind":"pith_short_12","alias_value":"UDIXZZ6HNC4D","created_at":"2026-05-18T12:33:30.264802+00:00"},{"alias_kind":"pith_short_16","alias_value":"UDIXZZ6HNC4DCOSA","created_at":"2026-05-18T12:33:30.264802+00:00"},{"alias_kind":"pith_short_8","alias_value":"UDIXZZ6H","created_at":"2026-05-18T12:33:30.264802+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2506.22921","citing_title":"Statistic threshold of distinguishing the environmental effects and modified theory of gravity with multiple massive black-hole binaries","ref_index":35,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/UDIXZZ6HNC4DCOSALIXB4VOKCO","json":"https://pith.science/pith/UDIXZZ6HNC4DCOSALIXB4VOKCO.json","graph_json":"https://pith.science/api/pith-number/UDIXZZ6HNC4DCOSALIXB4VOKCO/graph.json","events_json":"https://pith.science/api/pith-number/UDIXZZ6HNC4DCOSALIXB4VOKCO/events.json","paper":"https://pith.science/paper/UDIXZZ6H"},"agent_actions":{"view_html":"https://pith.science/pith/UDIXZZ6HNC4DCOSALIXB4VOKCO","download_json":"https://pith.science/pith/UDIXZZ6HNC4DCOSALIXB4VOKCO.json","view_paper":"https://pith.science/paper/UDIXZZ6H","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1903.04657&json=true","fetch_graph":"https://pith.science/api/pith-number/UDIXZZ6HNC4DCOSALIXB4VOKCO/graph.json","fetch_events":"https://pith.science/api/pith-number/UDIXZZ6HNC4DCOSALIXB4VOKCO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UDIXZZ6HNC4DCOSALIXB4VOKCO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UDIXZZ6HNC4DCOSALIXB4VOKCO/action/storage_attestation","attest_author":"https://pith.science/pith/UDIXZZ6HNC4DCOSALIXB4VOKCO/action/author_attestation","sign_citation":"https://pith.science/pith/UDIXZZ6HNC4DCOSALIXB4VOKCO/action/citation_signature","submit_replication":"https://pith.science/pith/UDIXZZ6HNC4DCOSALIXB4VOKCO/action/replication_record"}},"created_at":"2026-05-17T23:51:29.030204+00:00","updated_at":"2026-05-17T23:51:29.030204+00:00"}