{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:MTNCTNOGLFRTZDQSURZFN47CSX","short_pith_number":"pith:MTNCTNOG","canonical_record":{"source":{"id":"1912.09433","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-12-19T17:59:01Z","cross_cats_sorted":[],"title_canon_sha256":"d915275fc7fc81bb4811cdb05e3a00baf3f0551e53d94a71f4b2c837979604cc","abstract_canon_sha256":"181930dab50ab1dbec47f62db410131ffcfff06fbe89c1c02e92e6d1c7f83f3d"},"schema_version":"1.0"},"canonical_sha256":"64da29b5c659633c8e12a47256f3e295fb9e3d518025e3ad712026214f61b2d8","source":{"kind":"arxiv","id":"1912.09433","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.09433","created_at":"2026-07-05T01:20:50Z"},{"alias_kind":"arxiv_version","alias_value":"1912.09433v1","created_at":"2026-07-05T01:20:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.09433","created_at":"2026-07-05T01:20:50Z"},{"alias_kind":"pith_short_12","alias_value":"MTNCTNOGLFRT","created_at":"2026-07-05T01:20:50Z"},{"alias_kind":"pith_short_16","alias_value":"MTNCTNOGLFRTZDQS","created_at":"2026-07-05T01:20:50Z"},{"alias_kind":"pith_short_8","alias_value":"MTNCTNOG","created_at":"2026-07-05T01:20:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:MTNCTNOGLFRTZDQSURZFN47CSX","target":"record","payload":{"canonical_record":{"source":{"id":"1912.09433","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-12-19T17:59:01Z","cross_cats_sorted":[],"title_canon_sha256":"d915275fc7fc81bb4811cdb05e3a00baf3f0551e53d94a71f4b2c837979604cc","abstract_canon_sha256":"181930dab50ab1dbec47f62db410131ffcfff06fbe89c1c02e92e6d1c7f83f3d"},"schema_version":"1.0"},"canonical_sha256":"64da29b5c659633c8e12a47256f3e295fb9e3d518025e3ad712026214f61b2d8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:20:50.602601Z","signature_b64":"I9nzyiE2OTIFXMm6N6JK+aW4Dm4/Z8rpRKOARAcTfGRMwBXeKeQawdv0AgyOawIf0QeSNS/BOI9a/khymStyCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"64da29b5c659633c8e12a47256f3e295fb9e3d518025e3ad712026214f61b2d8","last_reissued_at":"2026-07-05T01:20:50.602081Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:20:50.602081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.09433","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:20:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Mu2f6X0Ma20UT42r/+99qoHYXeSRMv2zyF78Vg6n+iaKOsMnKgHyBYOTbbLQ7ZPCk8/6e7fi4qlOUx6d7kOkBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-28T17:31:06.075705Z"},"content_sha256":"66ab45d7d1c28748216fead15d024af58bef6f623b706247f1da658c7761f38b","schema_version":"1.0","event_id":"sha256:66ab45d7d1c28748216fead15d024af58bef6f623b706247f1da658c7761f38b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:MTNCTNOGLFRTZDQSURZFN47CSX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Characterizing the Cosmological Gravitational Wave Background Anisotropies and non-Gaussianity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Ricciardone, A. Riotto, D. Bertacca, G. Tasinato, M. Peloso, N. Bartolo, S. Matarrese","submitted_at":"2019-12-19T17:59:01Z","abstract_excerpt":"A future detection of the Stochastic Gravitational Wave Background (SGWB) with GW experiments is expected to open a new window on early universe cosmology and on the astrophysics of compact objects. In this paper we study SGWB anisotropies, that can offer new tools to discriminate between different sources of GWs. In particular, the cosmological SGWB inherits its anisotropies both (i) at its production and (ii) during its propagation through our perturbed universe. Concerning (i), we show that it typically leads to anisotropies with order one dependence on frequency. We then compute the effect"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.09433","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1912.09433/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:20:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fr9+pvj24654bHkI0ExanAIL7Qpg0YKXOJ5pzVTuiakoh1XLVE98Tsc7PjkchqHk/4C94jCHsjEVYnRdYey2Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-28T17:31:06.076098Z"},"content_sha256":"1375b7fd8ce12fbafad13cd7f97405d6fe8f1474454f87efdf8b0f8f741b8e51","schema_version":"1.0","event_id":"sha256:1375b7fd8ce12fbafad13cd7f97405d6fe8f1474454f87efdf8b0f8f741b8e51"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MTNCTNOGLFRTZDQSURZFN47CSX/bundle.json","state_url":"https://pith.science/pith/MTNCTNOGLFRTZDQSURZFN47CSX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MTNCTNOGLFRTZDQSURZFN47CSX/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-28T17:31:06Z","links":{"resolver":"https://pith.science/pith/MTNCTNOGLFRTZDQSURZFN47CSX","bundle":"https://pith.science/pith/MTNCTNOGLFRTZDQSURZFN47CSX/bundle.json","state":"https://pith.science/pith/MTNCTNOGLFRTZDQSURZFN47CSX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MTNCTNOGLFRTZDQSURZFN47CSX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:MTNCTNOGLFRTZDQSURZFN47CSX","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":"181930dab50ab1dbec47f62db410131ffcfff06fbe89c1c02e92e6d1c7f83f3d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-12-19T17:59:01Z","title_canon_sha256":"d915275fc7fc81bb4811cdb05e3a00baf3f0551e53d94a71f4b2c837979604cc"},"schema_version":"1.0","source":{"id":"1912.09433","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.09433","created_at":"2026-07-05T01:20:50Z"},{"alias_kind":"arxiv_version","alias_value":"1912.09433v1","created_at":"2026-07-05T01:20:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.09433","created_at":"2026-07-05T01:20:50Z"},{"alias_kind":"pith_short_12","alias_value":"MTNCTNOGLFRT","created_at":"2026-07-05T01:20:50Z"},{"alias_kind":"pith_short_16","alias_value":"MTNCTNOGLFRTZDQS","created_at":"2026-07-05T01:20:50Z"},{"alias_kind":"pith_short_8","alias_value":"MTNCTNOG","created_at":"2026-07-05T01:20:50Z"}],"graph_snapshots":[{"event_id":"sha256:1375b7fd8ce12fbafad13cd7f97405d6fe8f1474454f87efdf8b0f8f741b8e51","target":"graph","created_at":"2026-07-05T01:20:50Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1912.09433/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A future detection of the Stochastic Gravitational Wave Background (SGWB) with GW experiments is expected to open a new window on early universe cosmology and on the astrophysics of compact objects. In this paper we study SGWB anisotropies, that can offer new tools to discriminate between different sources of GWs. In particular, the cosmological SGWB inherits its anisotropies both (i) at its production and (ii) during its propagation through our perturbed universe. Concerning (i), we show that it typically leads to anisotropies with order one dependence on frequency. We then compute the effect","authors_text":"A. Ricciardone, A. Riotto, D. Bertacca, G. Tasinato, M. Peloso, N. Bartolo, S. Matarrese","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-12-19T17:59:01Z","title":"Characterizing the Cosmological Gravitational Wave Background Anisotropies and non-Gaussianity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.09433","kind":"arxiv","version":1},"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":"sha256:66ab45d7d1c28748216fead15d024af58bef6f623b706247f1da658c7761f38b","target":"record","created_at":"2026-07-05T01:20:50Z","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":"181930dab50ab1dbec47f62db410131ffcfff06fbe89c1c02e92e6d1c7f83f3d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-12-19T17:59:01Z","title_canon_sha256":"d915275fc7fc81bb4811cdb05e3a00baf3f0551e53d94a71f4b2c837979604cc"},"schema_version":"1.0","source":{"id":"1912.09433","kind":"arxiv","version":1}},"canonical_sha256":"64da29b5c659633c8e12a47256f3e295fb9e3d518025e3ad712026214f61b2d8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"64da29b5c659633c8e12a47256f3e295fb9e3d518025e3ad712026214f61b2d8","first_computed_at":"2026-07-05T01:20:50.602081Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:20:50.602081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I9nzyiE2OTIFXMm6N6JK+aW4Dm4/Z8rpRKOARAcTfGRMwBXeKeQawdv0AgyOawIf0QeSNS/BOI9a/khymStyCg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:20:50.602601Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.09433","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:66ab45d7d1c28748216fead15d024af58bef6f623b706247f1da658c7761f38b","sha256:1375b7fd8ce12fbafad13cd7f97405d6fe8f1474454f87efdf8b0f8f741b8e51"],"state_sha256":"5cb67e1a0f6fc63c3a130b6e300316f23a0406441f26f9d8081c4e0bd26a191d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9LekLQ9eWoX+lA/nFSB/aSWP3TrMJWRVFAFIoZshG+xh6NfepuRBS/OzHhb5EHMY+XG2nGbouUrWZxGtdEBXAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-28T17:31:06.078569Z","bundle_sha256":"ee3378c5f8eda07709b175bd431bb71c444e8eefda385bae5ef667e5dd501b62"}}