{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:BVB5PKMQV6M5OEGIGWYYREN6BY","short_pith_number":"pith:BVB5PKMQ","schema_version":"1.0","canonical_sha256":"0d43d7a990af99d710c835b18891be0e3900d0af38cac28122815cb54e79f632","source":{"kind":"arxiv","id":"1511.04335","version":1},"attestation_state":"computed","paper":{"title":"Sub-percent constraints on cosmological temperature evolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Avgoustidis, C. J. A. P. Martins, G. Luzzi, R. T. G\\'enova-Santos","submitted_at":"2015-11-13T16:09:31Z","abstract_excerpt":"The redshift dependence of the cosmic microwave background temperature is one of the key cosmological observables. In the standard cosmological model one has $T(z)=T_0(1+z)$, where $T_0$ is the present-day temperature. Deviations from this behavior would imply the presence of new physics. Here we discuss how the combination of all currently available direct and indirect measurements of $T(z)$ constrains the common phenomenological parametrization $T(z)=T_0(1+z)^{1-\\beta}$, and obtain the first sub-percent constraint on the $\\beta$ parameter, specifically $\\beta=(7.6\\pm8.0)\\times10^{-3}$ at the"},"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":"1511.04335","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-11-13T16:09:31Z","cross_cats_sorted":[],"title_canon_sha256":"4ef26832e9bbacaa626bc5ad07b2f8be3101ef605c04292a8ade23c5ac4dcd6e","abstract_canon_sha256":"3e0744daf82421f59305149d68ab57da6b96a09479c7aeb45049f1888a3e0dd6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:47.731815Z","signature_b64":"4J+SJC9N/iU9ORPPeuzPbDzLL1tqfeVl5svmLXRpDagNFXKHCB+DPML8LRdDSjvUvu77U4rLzQsMrlehpd/qBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0d43d7a990af99d710c835b18891be0e3900d0af38cac28122815cb54e79f632","last_reissued_at":"2026-05-18T01:19:47.731359Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:47.731359Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Sub-percent constraints on cosmological temperature evolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Avgoustidis, C. J. A. P. Martins, G. Luzzi, R. T. G\\'enova-Santos","submitted_at":"2015-11-13T16:09:31Z","abstract_excerpt":"The redshift dependence of the cosmic microwave background temperature is one of the key cosmological observables. In the standard cosmological model one has $T(z)=T_0(1+z)$, where $T_0$ is the present-day temperature. Deviations from this behavior would imply the presence of new physics. Here we discuss how the combination of all currently available direct and indirect measurements of $T(z)$ constrains the common phenomenological parametrization $T(z)=T_0(1+z)^{1-\\beta}$, and obtain the first sub-percent constraint on the $\\beta$ parameter, specifically $\\beta=(7.6\\pm8.0)\\times10^{-3}$ at the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.04335","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":"1511.04335","created_at":"2026-05-18T01:19:47.731427+00:00"},{"alias_kind":"arxiv_version","alias_value":"1511.04335v1","created_at":"2026-05-18T01:19:47.731427+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.04335","created_at":"2026-05-18T01:19:47.731427+00:00"},{"alias_kind":"pith_short_12","alias_value":"BVB5PKMQV6M5","created_at":"2026-05-18T12:29:14.074870+00:00"},{"alias_kind":"pith_short_16","alias_value":"BVB5PKMQV6M5OEGI","created_at":"2026-05-18T12:29:14.074870+00:00"},{"alias_kind":"pith_short_8","alias_value":"BVB5PKMQ","created_at":"2026-05-18T12:29:14.074870+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/BVB5PKMQV6M5OEGIGWYYREN6BY","json":"https://pith.science/pith/BVB5PKMQV6M5OEGIGWYYREN6BY.json","graph_json":"https://pith.science/api/pith-number/BVB5PKMQV6M5OEGIGWYYREN6BY/graph.json","events_json":"https://pith.science/api/pith-number/BVB5PKMQV6M5OEGIGWYYREN6BY/events.json","paper":"https://pith.science/paper/BVB5PKMQ"},"agent_actions":{"view_html":"https://pith.science/pith/BVB5PKMQV6M5OEGIGWYYREN6BY","download_json":"https://pith.science/pith/BVB5PKMQV6M5OEGIGWYYREN6BY.json","view_paper":"https://pith.science/paper/BVB5PKMQ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1511.04335&json=true","fetch_graph":"https://pith.science/api/pith-number/BVB5PKMQV6M5OEGIGWYYREN6BY/graph.json","fetch_events":"https://pith.science/api/pith-number/BVB5PKMQV6M5OEGIGWYYREN6BY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BVB5PKMQV6M5OEGIGWYYREN6BY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BVB5PKMQV6M5OEGIGWYYREN6BY/action/storage_attestation","attest_author":"https://pith.science/pith/BVB5PKMQV6M5OEGIGWYYREN6BY/action/author_attestation","sign_citation":"https://pith.science/pith/BVB5PKMQV6M5OEGIGWYYREN6BY/action/citation_signature","submit_replication":"https://pith.science/pith/BVB5PKMQV6M5OEGIGWYYREN6BY/action/replication_record"}},"created_at":"2026-05-18T01:19:47.731427+00:00","updated_at":"2026-05-18T01:19:47.731427+00:00"}