{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:43OL7GT7WEUZID2FG2CRB5AUC7","short_pith_number":"pith:43OL7GT7","canonical_record":{"source":{"id":"2410.22230","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-10-29T16:58:20Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"928b65e85c2f93f580e36fcd4cb6fc919ccd290f139b6fd270b7403f9de18205","abstract_canon_sha256":"10b41c89bf88442c17365ebc52fd8dc06df648be4ef31df32a95177b87a7c0f5"},"schema_version":"1.0"},"canonical_sha256":"e6dcbf9a7fb129940f45368510f41417dc89672963e04b4d4dbbe7f7fe92804a","source":{"kind":"arxiv","id":"2410.22230","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.22230","created_at":"2026-07-05T09:29:50Z"},{"alias_kind":"arxiv_version","alias_value":"2410.22230v2","created_at":"2026-07-05T09:29:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.22230","created_at":"2026-07-05T09:29:50Z"},{"alias_kind":"pith_short_12","alias_value":"43OL7GT7WEUZ","created_at":"2026-07-05T09:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"43OL7GT7WEUZID2F","created_at":"2026-07-05T09:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"43OL7GT7","created_at":"2026-07-05T09:29:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:43OL7GT7WEUZID2FG2CRB5AUC7","target":"record","payload":{"canonical_record":{"source":{"id":"2410.22230","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-10-29T16:58:20Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"928b65e85c2f93f580e36fcd4cb6fc919ccd290f139b6fd270b7403f9de18205","abstract_canon_sha256":"10b41c89bf88442c17365ebc52fd8dc06df648be4ef31df32a95177b87a7c0f5"},"schema_version":"1.0"},"canonical_sha256":"e6dcbf9a7fb129940f45368510f41417dc89672963e04b4d4dbbe7f7fe92804a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:29:50.157655Z","signature_b64":"9xXomXHgsyAja/gDVjFzdSyT73LEM1DJyZmccZXgyMx7xLYtJy1KFB/2ambfRox/UbIhxeq/1uxU/uviwzVtCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e6dcbf9a7fb129940f45368510f41417dc89672963e04b4d4dbbe7f7fe92804a","last_reissued_at":"2026-07-05T09:29:50.157207Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:29:50.157207Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2410.22230","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T09:29:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+kUxJ+g5qVf/+IjjGHiHc4VLvht0uwk343n1RJs4yqCkVqEn4iQNvzwtruu7NQUto/4QzkYtVyeu8qsvEeQXCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T13:28:40.375589Z"},"content_sha256":"3c35a39721688691bbd007cf9b90ea05ede6afc59b6c7bc4b8236013ca289314","schema_version":"1.0","event_id":"sha256:3c35a39721688691bbd007cf9b90ea05ede6afc59b6c7bc4b8236013ca289314"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:43OL7GT7WEUZID2FG2CRB5AUC7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First Detection of Molecular Gas in the Giant Low Surface Brightness Galaxy Malin 1","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.GA","authors_text":"Beno\\^it Epinat, David Frayer, Diego Garc\\'ia-Appadoo, Evelyn J. Johnston, Gaspar Galaz, Hugo Messias, J. Christopher Howk, Jorge Gonz\\'alez-L\\'opez, Juan Carlos Mu\\~noz-Mateos, Junais, Katerine Joachimi, Mat\\'ias Bla\\~na, Michelle Berg, Paulo Cort\\'es, Peter M. Weilbacher, Philippe Amram, Roy Bustos-Espinoza, Samuel Boissier, Thomas Puzia, Viviana Guzm\\'an","submitted_at":"2024-10-29T16:58:20Z","abstract_excerpt":"After over three decades of unsuccessful attempts, we report the first detection of molecular gas emission in Malin 1, the largest spiral galaxy observed to date, and one of the most iconic giant low surface brightness galaxies. Using ALMA, we detect significant $^{12}$CO(J=1-0) emission in the galaxy's central region and tentatively identify CO emission across three regions on the disc. These observations allow for a better estimate of the H$_2$ mass and molecular gas mass surface density, both of which are remarkably low given the galaxy's scale. By integrating data on its HI mass, we derive"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.22230","kind":"arxiv","version":2},"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/2410.22230/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":"2026-07-05T09:29:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nkW7BnSoo9ARWJBM7ofu6I4YCGCTUtB/W8AAjXA5c8TJmbNMrG3VBt01eB09EXMCGI5PcqU9EVHIAUGV+ytMBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T13:28:40.376073Z"},"content_sha256":"89e70eda198794b2c2ac44a608564037cb93071e158136911cfba249a31f08b7","schema_version":"1.0","event_id":"sha256:89e70eda198794b2c2ac44a608564037cb93071e158136911cfba249a31f08b7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/43OL7GT7WEUZID2FG2CRB5AUC7/bundle.json","state_url":"https://pith.science/pith/43OL7GT7WEUZID2FG2CRB5AUC7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/43OL7GT7WEUZID2FG2CRB5AUC7/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":"2026-08-06T13:28:40Z","links":{"resolver":"https://pith.science/pith/43OL7GT7WEUZID2FG2CRB5AUC7","bundle":"https://pith.science/pith/43OL7GT7WEUZID2FG2CRB5AUC7/bundle.json","state":"https://pith.science/pith/43OL7GT7WEUZID2FG2CRB5AUC7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/43OL7GT7WEUZID2FG2CRB5AUC7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:43OL7GT7WEUZID2FG2CRB5AUC7","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":"10b41c89bf88442c17365ebc52fd8dc06df648be4ef31df32a95177b87a7c0f5","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-10-29T16:58:20Z","title_canon_sha256":"928b65e85c2f93f580e36fcd4cb6fc919ccd290f139b6fd270b7403f9de18205"},"schema_version":"1.0","source":{"id":"2410.22230","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.22230","created_at":"2026-07-05T09:29:50Z"},{"alias_kind":"arxiv_version","alias_value":"2410.22230v2","created_at":"2026-07-05T09:29:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.22230","created_at":"2026-07-05T09:29:50Z"},{"alias_kind":"pith_short_12","alias_value":"43OL7GT7WEUZ","created_at":"2026-07-05T09:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"43OL7GT7WEUZID2F","created_at":"2026-07-05T09:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"43OL7GT7","created_at":"2026-07-05T09:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:89e70eda198794b2c2ac44a608564037cb93071e158136911cfba249a31f08b7","target":"graph","created_at":"2026-07-05T09:29:50Z","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/2410.22230/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"After over three decades of unsuccessful attempts, we report the first detection of molecular gas emission in Malin 1, the largest spiral galaxy observed to date, and one of the most iconic giant low surface brightness galaxies. Using ALMA, we detect significant $^{12}$CO(J=1-0) emission in the galaxy's central region and tentatively identify CO emission across three regions on the disc. These observations allow for a better estimate of the H$_2$ mass and molecular gas mass surface density, both of which are remarkably low given the galaxy's scale. By integrating data on its HI mass, we derive","authors_text":"Beno\\^it Epinat, David Frayer, Diego Garc\\'ia-Appadoo, Evelyn J. Johnston, Gaspar Galaz, Hugo Messias, J. Christopher Howk, Jorge Gonz\\'alez-L\\'opez, Juan Carlos Mu\\~noz-Mateos, Junais, Katerine Joachimi, Mat\\'ias Bla\\~na, Michelle Berg, Paulo Cort\\'es, Peter M. Weilbacher, Philippe Amram, Roy Bustos-Espinoza, Samuel Boissier, Thomas Puzia, Viviana Guzm\\'an","cross_cats":["astro-ph.IM"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-10-29T16:58:20Z","title":"First Detection of Molecular Gas in the Giant Low Surface Brightness Galaxy Malin 1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.22230","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":"sha256:3c35a39721688691bbd007cf9b90ea05ede6afc59b6c7bc4b8236013ca289314","target":"record","created_at":"2026-07-05T09:29:50Z","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":"10b41c89bf88442c17365ebc52fd8dc06df648be4ef31df32a95177b87a7c0f5","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-10-29T16:58:20Z","title_canon_sha256":"928b65e85c2f93f580e36fcd4cb6fc919ccd290f139b6fd270b7403f9de18205"},"schema_version":"1.0","source":{"id":"2410.22230","kind":"arxiv","version":2}},"canonical_sha256":"e6dcbf9a7fb129940f45368510f41417dc89672963e04b4d4dbbe7f7fe92804a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e6dcbf9a7fb129940f45368510f41417dc89672963e04b4d4dbbe7f7fe92804a","first_computed_at":"2026-07-05T09:29:50.157207Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:29:50.157207Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9xXomXHgsyAja/gDVjFzdSyT73LEM1DJyZmccZXgyMx7xLYtJy1KFB/2ambfRox/UbIhxeq/1uxU/uviwzVtCA==","signature_status":"signed_v1","signed_at":"2026-07-05T09:29:50.157655Z","signed_message":"canonical_sha256_bytes"},"source_id":"2410.22230","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3c35a39721688691bbd007cf9b90ea05ede6afc59b6c7bc4b8236013ca289314","sha256:89e70eda198794b2c2ac44a608564037cb93071e158136911cfba249a31f08b7"],"state_sha256":"eb0e6bbaae80485cf17999356df7cc459746cf727682d32879c70eb9984e0a78"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z14AcEco/p3w+7QJtOfOVC+emdFRURx+B5oHH/x1+E97g+75WDVuC0QNPaolhYJN0HA/6hU51a+ck4f6ADvNAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T13:28:40.379403Z","bundle_sha256":"e2c8c752c109ff593e4db92ae553abacd6f18f1c20cd1cabfc4e838f49101a3f"}}