{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:MJSUK4XUCBHEE7QBQMCPZ2J3IR","short_pith_number":"pith:MJSUK4XU","canonical_record":{"source":{"id":"1212.0236","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-12-02T19:25:23Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"947276d508c68fe5696abaed6c222e3d1478ec2acff18dfcb861af41162dac38","abstract_canon_sha256":"fe6e81b7f31a74c14e303cb2bc01cb9f1eb9a74c79260350105ca71aa39b7516"},"schema_version":"1.0"},"canonical_sha256":"62654572f4104e427e018304fce93b44516fb855cc22fbbdf47c06366ec50131","source":{"kind":"arxiv","id":"1212.0236","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.0236","created_at":"2026-05-18T01:52:48Z"},{"alias_kind":"arxiv_version","alias_value":"1212.0236v1","created_at":"2026-05-18T01:52:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.0236","created_at":"2026-05-18T01:52:48Z"},{"alias_kind":"pith_short_12","alias_value":"MJSUK4XUCBHE","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MJSUK4XUCBHEE7QB","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MJSUK4XU","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:MJSUK4XUCBHEE7QBQMCPZ2J3IR","target":"record","payload":{"canonical_record":{"source":{"id":"1212.0236","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-12-02T19:25:23Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"947276d508c68fe5696abaed6c222e3d1478ec2acff18dfcb861af41162dac38","abstract_canon_sha256":"fe6e81b7f31a74c14e303cb2bc01cb9f1eb9a74c79260350105ca71aa39b7516"},"schema_version":"1.0"},"canonical_sha256":"62654572f4104e427e018304fce93b44516fb855cc22fbbdf47c06366ec50131","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:48.546774Z","signature_b64":"nOuribQ16LnFcXBww2/dV1H97vUDrFjtY/7n4+lBDI7ocHojTx7pKOE9TIWZn07N6ZZrgVOxEf5GAhQPUp07Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"62654572f4104e427e018304fce93b44516fb855cc22fbbdf47c06366ec50131","last_reissued_at":"2026-05-18T01:52:48.546291Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:48.546291Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1212.0236","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":"2026-05-18T01:52:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qE8QQjikIyxg6/5K+i8XCHcLa/5aJWdmEqeGT2cB/I/uTbzdc5TGfkqd+Ob03zV2yyK3oEU4s1ElHlLg+lozCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T01:40:57.961305Z"},"content_sha256":"c86aff47f96c9630f059e7d46402d9ff5509ef670ba3d0ecded08a092781cfff","schema_version":"1.0","event_id":"sha256:c86aff47f96c9630f059e7d46402d9ff5509ef670ba3d0ecded08a092781cfff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:MJSUK4XUCBHEE7QBQMCPZ2J3IR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Stellar Surface Magneto-Convection as a Source of Astrophysical Noise. I. Multi-component Parameterisation of Absorption Line Profiles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"C. A. Watson, H. M. Cegla, M. Mathioudakis, S. Shelyag","submitted_at":"2012-12-02T19:25:23Z","abstract_excerpt":"We outline our techniques to characterise photospheric granulation as an astrophysical noise source. A four component parameterisation of granulation is developed that can be used to reconstruct stellar line asymmetries and radial velocity shifts due to photospheric convective motions. The four components are made up of absorption line profiles calculated for granules, magnetic intergranular lanes, non-magnetic intergranular lanes, and magnetic bright points at disc centre. These components are constructed by averaging Fe I $6302 \\mathrm{\\AA}$ magnetically sensitive absorption line profiles ou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.0236","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:52:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GfrAnbO1NMzl5uVMtVIdYAKev8+x6mlNI28FMaJ7nKVpM8pUfA+8M6IUUc464GzrWVohrSEuKujzDsmD66fzDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T01:40:57.961876Z"},"content_sha256":"be9bf9de3a033565d9877667bd9f17d389310554ca246488a86abaa47db9df1f","schema_version":"1.0","event_id":"sha256:be9bf9de3a033565d9877667bd9f17d389310554ca246488a86abaa47db9df1f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MJSUK4XUCBHEE7QBQMCPZ2J3IR/bundle.json","state_url":"https://pith.science/pith/MJSUK4XUCBHEE7QBQMCPZ2J3IR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MJSUK4XUCBHEE7QBQMCPZ2J3IR/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":"2026-05-23T01:40:57Z","links":{"resolver":"https://pith.science/pith/MJSUK4XUCBHEE7QBQMCPZ2J3IR","bundle":"https://pith.science/pith/MJSUK4XUCBHEE7QBQMCPZ2J3IR/bundle.json","state":"https://pith.science/pith/MJSUK4XUCBHEE7QBQMCPZ2J3IR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MJSUK4XUCBHEE7QBQMCPZ2J3IR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:MJSUK4XUCBHEE7QBQMCPZ2J3IR","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":"fe6e81b7f31a74c14e303cb2bc01cb9f1eb9a74c79260350105ca71aa39b7516","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-12-02T19:25:23Z","title_canon_sha256":"947276d508c68fe5696abaed6c222e3d1478ec2acff18dfcb861af41162dac38"},"schema_version":"1.0","source":{"id":"1212.0236","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.0236","created_at":"2026-05-18T01:52:48Z"},{"alias_kind":"arxiv_version","alias_value":"1212.0236v1","created_at":"2026-05-18T01:52:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.0236","created_at":"2026-05-18T01:52:48Z"},{"alias_kind":"pith_short_12","alias_value":"MJSUK4XUCBHE","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MJSUK4XUCBHEE7QB","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MJSUK4XU","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:be9bf9de3a033565d9877667bd9f17d389310554ca246488a86abaa47db9df1f","target":"graph","created_at":"2026-05-18T01:52:48Z","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":"We outline our techniques to characterise photospheric granulation as an astrophysical noise source. A four component parameterisation of granulation is developed that can be used to reconstruct stellar line asymmetries and radial velocity shifts due to photospheric convective motions. The four components are made up of absorption line profiles calculated for granules, magnetic intergranular lanes, non-magnetic intergranular lanes, and magnetic bright points at disc centre. These components are constructed by averaging Fe I $6302 \\mathrm{\\AA}$ magnetically sensitive absorption line profiles ou","authors_text":"C. A. Watson, H. M. Cegla, M. Mathioudakis, S. Shelyag","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-12-02T19:25:23Z","title":"Stellar Surface Magneto-Convection as a Source of Astrophysical Noise. I. Multi-component Parameterisation of Absorption Line Profiles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.0236","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:c86aff47f96c9630f059e7d46402d9ff5509ef670ba3d0ecded08a092781cfff","target":"record","created_at":"2026-05-18T01:52:48Z","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":"fe6e81b7f31a74c14e303cb2bc01cb9f1eb9a74c79260350105ca71aa39b7516","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-12-02T19:25:23Z","title_canon_sha256":"947276d508c68fe5696abaed6c222e3d1478ec2acff18dfcb861af41162dac38"},"schema_version":"1.0","source":{"id":"1212.0236","kind":"arxiv","version":1}},"canonical_sha256":"62654572f4104e427e018304fce93b44516fb855cc22fbbdf47c06366ec50131","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"62654572f4104e427e018304fce93b44516fb855cc22fbbdf47c06366ec50131","first_computed_at":"2026-05-18T01:52:48.546291Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:48.546291Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nOuribQ16LnFcXBww2/dV1H97vUDrFjtY/7n4+lBDI7ocHojTx7pKOE9TIWZn07N6ZZrgVOxEf5GAhQPUp07Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:48.546774Z","signed_message":"canonical_sha256_bytes"},"source_id":"1212.0236","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c86aff47f96c9630f059e7d46402d9ff5509ef670ba3d0ecded08a092781cfff","sha256:be9bf9de3a033565d9877667bd9f17d389310554ca246488a86abaa47db9df1f"],"state_sha256":"f1330fe5f590a2db5df72ff37a6333c220a71d0b3f0fd139862ca8f835a2b7c8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fcaXLc0/Pf8WnMTVgWKlERizuyb9NvFnlGBrRr7E01zSNQNOTivXBsj7MWhYjMrTksc4wwIRHjutPqK7QeDXDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T01:40:57.964560Z","bundle_sha256":"0a7501e84f011edddaeb53771af5a098fd3fd879904decfd41925cd2b27da14e"}}