{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:J5GI3QQ7Z2OTRI4FTXM3DSTQMJ","short_pith_number":"pith:J5GI3QQ7","canonical_record":{"source":{"id":"1207.2583","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-11T10:30:34Z","cross_cats_sorted":[],"title_canon_sha256":"9b8384de8bbb435dd8d6c1dad87c38a70e4085b4f89e87a8f2f3d5e7a49fa850","abstract_canon_sha256":"cf91f9f521ed7514ef4068d157a1a73b90ae45cf7d38431af95691bcc0c25ba6"},"schema_version":"1.0"},"canonical_sha256":"4f4c8dc21fce9d38a3859dd9b1ca7062411624bcfbc32926469d6686c13ca909","source":{"kind":"arxiv","id":"1207.2583","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.2583","created_at":"2026-05-18T01:56:25Z"},{"alias_kind":"arxiv_version","alias_value":"1207.2583v1","created_at":"2026-05-18T01:56:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.2583","created_at":"2026-05-18T01:56:25Z"},{"alias_kind":"pith_short_12","alias_value":"J5GI3QQ7Z2OT","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"J5GI3QQ7Z2OTRI4F","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"J5GI3QQ7","created_at":"2026-05-18T12:27:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:J5GI3QQ7Z2OTRI4FTXM3DSTQMJ","target":"record","payload":{"canonical_record":{"source":{"id":"1207.2583","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-11T10:30:34Z","cross_cats_sorted":[],"title_canon_sha256":"9b8384de8bbb435dd8d6c1dad87c38a70e4085b4f89e87a8f2f3d5e7a49fa850","abstract_canon_sha256":"cf91f9f521ed7514ef4068d157a1a73b90ae45cf7d38431af95691bcc0c25ba6"},"schema_version":"1.0"},"canonical_sha256":"4f4c8dc21fce9d38a3859dd9b1ca7062411624bcfbc32926469d6686c13ca909","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:56:25.355058Z","signature_b64":"Rsky5EnwTfKkXE3tPQ37L7xocccZACtRVW8QzmMQIbwE7S0Zi2v9C7xO5zkeWo3kyKXzVZ25KzyfIDxQc4QhCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4f4c8dc21fce9d38a3859dd9b1ca7062411624bcfbc32926469d6686c13ca909","last_reissued_at":"2026-05-18T01:56:25.354307Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:56:25.354307Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.2583","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":"2026-05-18T01:56:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AeAvfRCoSdjjQOjEA1Etr62V0B6MZ1f5MzopqLGSPp5lU4lxomds7Z+oz29wm9M4kP8gPq5CHd6Fj/uvaCkSAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T01:18:23.955842Z"},"content_sha256":"f5ebe698d2ebdc3fd22accad14eacc5269cad72888b8109ed46d422eba9d6304","schema_version":"1.0","event_id":"sha256:f5ebe698d2ebdc3fd22accad14eacc5269cad72888b8109ed46d422eba9d6304"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:J5GI3QQ7Z2OTRI4FTXM3DSTQMJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evolved star water maser cloud size determined by star size","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. M. S. Richards, E. E. Lekht, G. Rudnitskij, J.A. Yates, J. E. Mendoza-Torres, K. Murakawa, M. D. Gray, S. Etoka","submitted_at":"2012-07-11T10:30:34Z","abstract_excerpt":"Cool, evolved stars undergo copious mass loss but the details of how the matter is returned to the ISM are still under debate. We investigated the structure and evolution of the wind at 5 to 50 stellar radii from Asymptotic Giant Branch and Red Supergiant stars. 22-GHz water masers around seven evolved stars were imaged using MERLIN, at sub-AU resolution. Each source was observed at between 2 and 7 epochs (several stellar periods). We compared our results with long-term Pushchino single dish monitoring. The 22-GHz emission is located in ~spherical, thick, unevenly filled shells. The outflow ve"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.2583","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":"2026-05-18T01:56:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l+dCyImdofUG6JyAiYXWL1sHvyvq1WrownXG8ImF/Sb3bopfe1l3ziyie7Qd88sGcfXSuVeGSwv13mHzInepDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T01:18:23.956184Z"},"content_sha256":"ae836d3fb01e872674a9273ec451f39ac6f61804e510a842518482918bba8e8d","schema_version":"1.0","event_id":"sha256:ae836d3fb01e872674a9273ec451f39ac6f61804e510a842518482918bba8e8d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/J5GI3QQ7Z2OTRI4FTXM3DSTQMJ/bundle.json","state_url":"https://pith.science/pith/J5GI3QQ7Z2OTRI4FTXM3DSTQMJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/J5GI3QQ7Z2OTRI4FTXM3DSTQMJ/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":"2026-06-02T01:18:23Z","links":{"resolver":"https://pith.science/pith/J5GI3QQ7Z2OTRI4FTXM3DSTQMJ","bundle":"https://pith.science/pith/J5GI3QQ7Z2OTRI4FTXM3DSTQMJ/bundle.json","state":"https://pith.science/pith/J5GI3QQ7Z2OTRI4FTXM3DSTQMJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/J5GI3QQ7Z2OTRI4FTXM3DSTQMJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:J5GI3QQ7Z2OTRI4FTXM3DSTQMJ","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":"cf91f9f521ed7514ef4068d157a1a73b90ae45cf7d38431af95691bcc0c25ba6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-11T10:30:34Z","title_canon_sha256":"9b8384de8bbb435dd8d6c1dad87c38a70e4085b4f89e87a8f2f3d5e7a49fa850"},"schema_version":"1.0","source":{"id":"1207.2583","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.2583","created_at":"2026-05-18T01:56:25Z"},{"alias_kind":"arxiv_version","alias_value":"1207.2583v1","created_at":"2026-05-18T01:56:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.2583","created_at":"2026-05-18T01:56:25Z"},{"alias_kind":"pith_short_12","alias_value":"J5GI3QQ7Z2OT","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"J5GI3QQ7Z2OTRI4F","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"J5GI3QQ7","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:ae836d3fb01e872674a9273ec451f39ac6f61804e510a842518482918bba8e8d","target":"graph","created_at":"2026-05-18T01:56:25Z","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":"Cool, evolved stars undergo copious mass loss but the details of how the matter is returned to the ISM are still under debate. We investigated the structure and evolution of the wind at 5 to 50 stellar radii from Asymptotic Giant Branch and Red Supergiant stars. 22-GHz water masers around seven evolved stars were imaged using MERLIN, at sub-AU resolution. Each source was observed at between 2 and 7 epochs (several stellar periods). We compared our results with long-term Pushchino single dish monitoring. The 22-GHz emission is located in ~spherical, thick, unevenly filled shells. The outflow ve","authors_text":"A. M. S. Richards, E. E. Lekht, G. Rudnitskij, J.A. Yates, J. E. Mendoza-Torres, K. Murakawa, M. D. Gray, S. Etoka","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-11T10:30:34Z","title":"Evolved star water maser cloud size determined by star size"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.2583","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:f5ebe698d2ebdc3fd22accad14eacc5269cad72888b8109ed46d422eba9d6304","target":"record","created_at":"2026-05-18T01:56:25Z","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":"cf91f9f521ed7514ef4068d157a1a73b90ae45cf7d38431af95691bcc0c25ba6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-11T10:30:34Z","title_canon_sha256":"9b8384de8bbb435dd8d6c1dad87c38a70e4085b4f89e87a8f2f3d5e7a49fa850"},"schema_version":"1.0","source":{"id":"1207.2583","kind":"arxiv","version":1}},"canonical_sha256":"4f4c8dc21fce9d38a3859dd9b1ca7062411624bcfbc32926469d6686c13ca909","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4f4c8dc21fce9d38a3859dd9b1ca7062411624bcfbc32926469d6686c13ca909","first_computed_at":"2026-05-18T01:56:25.354307Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:56:25.354307Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Rsky5EnwTfKkXE3tPQ37L7xocccZACtRVW8QzmMQIbwE7S0Zi2v9C7xO5zkeWo3kyKXzVZ25KzyfIDxQc4QhCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:56:25.355058Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.2583","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f5ebe698d2ebdc3fd22accad14eacc5269cad72888b8109ed46d422eba9d6304","sha256:ae836d3fb01e872674a9273ec451f39ac6f61804e510a842518482918bba8e8d"],"state_sha256":"d547ce7eb20009388ba4dc38ba1c77f8447fe3997b4f45ea52becf72c0003890"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ey6OHT3tyxIJZrSUHi/pELxc0LBXRRytaay/T00X5tz2fJlnSeNlqTnHF+o6JOn0uRpCjdvsD33ItX5mC9GzDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T01:18:23.958162Z","bundle_sha256":"5760dfb5f7e12973dc86e173ba2cb8dd2bf881b58e7d77522663d22f0c859e18"}}