{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:WUWJNHL33QGGKQBYZKYDUUHTIQ","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"f1d16e1f09a3cc61944fe36f1659ddee07bbdf19499dc6645cef0c4e0b2811be","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-10-26T17:19:25Z","title_canon_sha256":"52ae20ff20d72380af35729342684018c760e89a195b29d9958bf13654e35aea"},"schema_version":"1.0","source":{"id":"1710.09818","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.09818","created_at":"2026-05-18T00:20:38Z"},{"alias_kind":"arxiv_version","alias_value":"1710.09818v2","created_at":"2026-05-18T00:20:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.09818","created_at":"2026-05-18T00:20:38Z"},{"alias_kind":"pith_short_12","alias_value":"WUWJNHL33QGG","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"WUWJNHL33QGGKQBY","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"WUWJNHL3","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:c477952cb3d784197c6b2e1e29d41c9df2d80a139627667d677d2597c9ad54a6","target":"graph","created_at":"2026-05-18T00:20:38Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The impact of the existence of gravitons with non-vanishing masses on the B modes of the Cosmic Microwave Background (CMB) is investigated. We also focus on putative modifications to the speed of the gravitational waves. We find that a change of the graviton speed shifts the acoustic peaks of the CMB and then could be easily constrained. For the case of massive gravity, we show analytically how the B modes are sourced in a manner differing from the massless case leading to a plateau at low $l$ in the CMB spectrum. We also study the case when there are more than one graviton, and when pressure ","authors_text":"Anne-Christine Davis, Philippe Brax, Sebastian Cespedes","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-10-26T17:19:25Z","title":"Signatures of graviton masses on the CMB"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.09818","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:865e4961cb80e08da068028c9f4d3d10903adfcb7a92150e932b7acfbe3bcab1","target":"record","created_at":"2026-05-18T00:20:38Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"f1d16e1f09a3cc61944fe36f1659ddee07bbdf19499dc6645cef0c4e0b2811be","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-10-26T17:19:25Z","title_canon_sha256":"52ae20ff20d72380af35729342684018c760e89a195b29d9958bf13654e35aea"},"schema_version":"1.0","source":{"id":"1710.09818","kind":"arxiv","version":2}},"canonical_sha256":"b52c969d7bdc0c654038cab03a50f3440027214f207ba59a5bffa19060354d7f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b52c969d7bdc0c654038cab03a50f3440027214f207ba59a5bffa19060354d7f","first_computed_at":"2026-05-18T00:20:38.644736Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:20:38.644736Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ByaZQ6cn1Pi5d3M1lxd8AlgixaYLMxqF/xw4+DPeByKfEvu5zmW/FMuPKPNFa7USNrGjE9XEUs3OJlXMj736Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T00:20:38.645420Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.09818","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:865e4961cb80e08da068028c9f4d3d10903adfcb7a92150e932b7acfbe3bcab1","sha256:c477952cb3d784197c6b2e1e29d41c9df2d80a139627667d677d2597c9ad54a6"],"state_sha256":"03cc5795e751db0ace0012685b19c1dcef13de140b4365c9088c3cedf74912b1"}