{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:JHMTZYVMVIKDTI37Z6M5Y4M3MG","short_pith_number":"pith:JHMTZYVM","canonical_record":{"source":{"id":"2302.03270","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-02-07T05:50:14Z","cross_cats_sorted":[],"title_canon_sha256":"2cca6fe5f95826ae8f572a7ebb926ba2cba93875926669433dde44ff0cef8f44","abstract_canon_sha256":"d1068cc21f53d9a27349320cb5fa601726fe6856b876ba44a5dbc42e161d28bf"},"schema_version":"1.0"},"canonical_sha256":"49d93ce2acaa1439a37fcf99dc719b619d2e7fdfeffa6c6f07ed365e9db43152","source":{"kind":"arxiv","id":"2302.03270","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.03270","created_at":"2026-07-05T05:41:41Z"},{"alias_kind":"arxiv_version","alias_value":"2302.03270v1","created_at":"2026-07-05T05:41:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.03270","created_at":"2026-07-05T05:41:41Z"},{"alias_kind":"pith_short_12","alias_value":"JHMTZYVMVIKD","created_at":"2026-07-05T05:41:41Z"},{"alias_kind":"pith_short_16","alias_value":"JHMTZYVMVIKDTI37","created_at":"2026-07-05T05:41:41Z"},{"alias_kind":"pith_short_8","alias_value":"JHMTZYVM","created_at":"2026-07-05T05:41:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:JHMTZYVMVIKDTI37Z6M5Y4M3MG","target":"record","payload":{"canonical_record":{"source":{"id":"2302.03270","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-02-07T05:50:14Z","cross_cats_sorted":[],"title_canon_sha256":"2cca6fe5f95826ae8f572a7ebb926ba2cba93875926669433dde44ff0cef8f44","abstract_canon_sha256":"d1068cc21f53d9a27349320cb5fa601726fe6856b876ba44a5dbc42e161d28bf"},"schema_version":"1.0"},"canonical_sha256":"49d93ce2acaa1439a37fcf99dc719b619d2e7fdfeffa6c6f07ed365e9db43152","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:41:41.457378Z","signature_b64":"mewUp28+xEUqIoRNRPlp3/XMAMQUzvfhfScYFcLwh3BK96Fz5SexFTocI3I4FqASvsLF+iVqpYFpxGjNWPhjAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"49d93ce2acaa1439a37fcf99dc719b619d2e7fdfeffa6c6f07ed365e9db43152","last_reissued_at":"2026-07-05T05:41:41.456931Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:41:41.456931Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2302.03270","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":"2026-07-05T05:41:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7YsVzgNy8Vp8PgDhE2MV20ga2PIjBFNhh47S+qg23ndagojz6eB3H3RTZvjI6nTsR9KNcoexVL0+BMvbhu1tAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T07:41:13.320278Z"},"content_sha256":"87eb4839a4725e03513a6afe6969d145792d06b5e6135edad74a2e00589e7d18","schema_version":"1.0","event_id":"sha256:87eb4839a4725e03513a6afe6969d145792d06b5e6135edad74a2e00589e7d18"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:JHMTZYVMVIKDTI37Z6M5Y4M3MG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High sensitivity HI image of diffuse gas and new tidal features in M51 observed by FAST","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Haiyang Yu, Jin-Long Xu, Mei Ai, Ming Zhu, Peng Jiang, Yanbin Yang","submitted_at":"2023-02-07T05:50:14Z","abstract_excerpt":"We observed the classical interacting galaxy M51 with FAST and obtain high sensitivity HI image with column density down to 3.8 $\\times$ 10$^{18}$ cm$^{-2}$. In the image we can see a diffuse extended envelope around the system and several new tidal features. We also get a deeper look at M51b's probable gas, which has an approximated velocity range of 560 to 740 km s$^{-1}$ and a flux of 7.5 Jy km s$^{-1}$. Compared to the VLA image, we observe more complete structures of the Southeast Tail, Northeast Cloud and Northwest Plume, as well as new features of the Northwest Cloud and Southwest Plume"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.03270","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/2302.03270/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":"2026-07-05T05:41:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Es22oEHI4LLDVy1zJAzJ+CEbvrAyrgu7FXN0kbXz9Lpv3rUeZS0Zf5xFGDvnt5w8rVlL/GuAaUDE9lV1LyL/BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T07:41:13.321285Z"},"content_sha256":"52109a44c5bf58e38b6cdbb388eaef632660f758e618bcbc37f70ebe56a1873b","schema_version":"1.0","event_id":"sha256:52109a44c5bf58e38b6cdbb388eaef632660f758e618bcbc37f70ebe56a1873b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JHMTZYVMVIKDTI37Z6M5Y4M3MG/bundle.json","state_url":"https://pith.science/pith/JHMTZYVMVIKDTI37Z6M5Y4M3MG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JHMTZYVMVIKDTI37Z6M5Y4M3MG/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":"2026-08-11T07:41:13Z","links":{"resolver":"https://pith.science/pith/JHMTZYVMVIKDTI37Z6M5Y4M3MG","bundle":"https://pith.science/pith/JHMTZYVMVIKDTI37Z6M5Y4M3MG/bundle.json","state":"https://pith.science/pith/JHMTZYVMVIKDTI37Z6M5Y4M3MG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JHMTZYVMVIKDTI37Z6M5Y4M3MG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:JHMTZYVMVIKDTI37Z6M5Y4M3MG","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":"d1068cc21f53d9a27349320cb5fa601726fe6856b876ba44a5dbc42e161d28bf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-02-07T05:50:14Z","title_canon_sha256":"2cca6fe5f95826ae8f572a7ebb926ba2cba93875926669433dde44ff0cef8f44"},"schema_version":"1.0","source":{"id":"2302.03270","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.03270","created_at":"2026-07-05T05:41:41Z"},{"alias_kind":"arxiv_version","alias_value":"2302.03270v1","created_at":"2026-07-05T05:41:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.03270","created_at":"2026-07-05T05:41:41Z"},{"alias_kind":"pith_short_12","alias_value":"JHMTZYVMVIKD","created_at":"2026-07-05T05:41:41Z"},{"alias_kind":"pith_short_16","alias_value":"JHMTZYVMVIKDTI37","created_at":"2026-07-05T05:41:41Z"},{"alias_kind":"pith_short_8","alias_value":"JHMTZYVM","created_at":"2026-07-05T05:41:41Z"}],"graph_snapshots":[{"event_id":"sha256:52109a44c5bf58e38b6cdbb388eaef632660f758e618bcbc37f70ebe56a1873b","target":"graph","created_at":"2026-07-05T05:41:41Z","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/2302.03270/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We observed the classical interacting galaxy M51 with FAST and obtain high sensitivity HI image with column density down to 3.8 $\\times$ 10$^{18}$ cm$^{-2}$. In the image we can see a diffuse extended envelope around the system and several new tidal features. We also get a deeper look at M51b's probable gas, which has an approximated velocity range of 560 to 740 km s$^{-1}$ and a flux of 7.5 Jy km s$^{-1}$. Compared to the VLA image, we observe more complete structures of the Southeast Tail, Northeast Cloud and Northwest Plume, as well as new features of the Northwest Cloud and Southwest Plume","authors_text":"Haiyang Yu, Jin-Long Xu, Mei Ai, Ming Zhu, Peng Jiang, Yanbin Yang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-02-07T05:50:14Z","title":"High sensitivity HI image of diffuse gas and new tidal features in M51 observed by FAST"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.03270","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":"sha256:87eb4839a4725e03513a6afe6969d145792d06b5e6135edad74a2e00589e7d18","target":"record","created_at":"2026-07-05T05:41:41Z","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":"d1068cc21f53d9a27349320cb5fa601726fe6856b876ba44a5dbc42e161d28bf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-02-07T05:50:14Z","title_canon_sha256":"2cca6fe5f95826ae8f572a7ebb926ba2cba93875926669433dde44ff0cef8f44"},"schema_version":"1.0","source":{"id":"2302.03270","kind":"arxiv","version":1}},"canonical_sha256":"49d93ce2acaa1439a37fcf99dc719b619d2e7fdfeffa6c6f07ed365e9db43152","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"49d93ce2acaa1439a37fcf99dc719b619d2e7fdfeffa6c6f07ed365e9db43152","first_computed_at":"2026-07-05T05:41:41.456931Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:41:41.456931Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mewUp28+xEUqIoRNRPlp3/XMAMQUzvfhfScYFcLwh3BK96Fz5SexFTocI3I4FqASvsLF+iVqpYFpxGjNWPhjAg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:41:41.457378Z","signed_message":"canonical_sha256_bytes"},"source_id":"2302.03270","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:87eb4839a4725e03513a6afe6969d145792d06b5e6135edad74a2e00589e7d18","sha256:52109a44c5bf58e38b6cdbb388eaef632660f758e618bcbc37f70ebe56a1873b"],"state_sha256":"11a559921bee4288fae598a45a358b672c3dc9584e8b25345d6c8b64129c2456"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1zEgOg7vjSUtSdIvTgx96H8zzylHos7V51cxoWbx0NAC1Ot1iEhFYP9Z/OU25XzwO8gy61cf85uWkXU35hW/BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T07:41:13.328519Z","bundle_sha256":"d5dc34c73bb48cb80c57890f774e2109f19f81e34f247e365a02bb85ead46737"}}