{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:CQXT2GTJU366ZQ5ZD4JOOZIVDI","short_pith_number":"pith:CQXT2GTJ","canonical_record":{"source":{"id":"2605.17211","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-17T01:00:54Z","cross_cats_sorted":["astro-ph.GA","hep-ph"],"title_canon_sha256":"7ab28a965803358badc72ec4f7d5cd1a8b4dc75380e9a62ea2679838ac80a2a5","abstract_canon_sha256":"50b0e4aedb205df66eea12602931688f2217371ff72a9c86bdd9235e7c5883da"},"schema_version":"1.0"},"canonical_sha256":"142f3d1a69a6fdecc3b91f12e765151a0e95fabd9361c1b7af2785a20a2cc757","source":{"kind":"arxiv","id":"2605.17211","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.17211","created_at":"2026-05-20T00:03:45Z"},{"alias_kind":"arxiv_version","alias_value":"2605.17211v1","created_at":"2026-05-20T00:03:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.17211","created_at":"2026-05-20T00:03:45Z"},{"alias_kind":"pith_short_12","alias_value":"CQXT2GTJU366","created_at":"2026-05-20T00:03:45Z"},{"alias_kind":"pith_short_16","alias_value":"CQXT2GTJU366ZQ5Z","created_at":"2026-05-20T00:03:45Z"},{"alias_kind":"pith_short_8","alias_value":"CQXT2GTJ","created_at":"2026-05-20T00:03:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:CQXT2GTJU366ZQ5ZD4JOOZIVDI","target":"record","payload":{"canonical_record":{"source":{"id":"2605.17211","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-17T01:00:54Z","cross_cats_sorted":["astro-ph.GA","hep-ph"],"title_canon_sha256":"7ab28a965803358badc72ec4f7d5cd1a8b4dc75380e9a62ea2679838ac80a2a5","abstract_canon_sha256":"50b0e4aedb205df66eea12602931688f2217371ff72a9c86bdd9235e7c5883da"},"schema_version":"1.0"},"canonical_sha256":"142f3d1a69a6fdecc3b91f12e765151a0e95fabd9361c1b7af2785a20a2cc757","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T00:03:45.452775Z","signature_b64":"Yj0jD7mvXWvo0swVGd3ecraPTcDBnX/ZqbA8WA85NkE6l0cGpmmGSRTv1xkG/ZRsbQWvzdtiQfHgqpNHeXykAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"142f3d1a69a6fdecc3b91f12e765151a0e95fabd9361c1b7af2785a20a2cc757","last_reissued_at":"2026-05-20T00:03:45.451689Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T00:03:45.451689Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.17211","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":"2026-05-20T00:03:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cSP7t+YFU67rE8mCb2mJXwS14F2UAoamMq+Lyr2fHMDTU6qKhW+FafHALlD7+joIPlWCd8PR7RJJMjRnNk0vCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T17:20:25.202797Z"},"content_sha256":"a085dd489eb4ab88b20c5229200e0f62204838666bc4f9ed64ed9475bdf1532f","schema_version":"1.0","event_id":"sha256:a085dd489eb4ab88b20c5229200e0f62204838666bc4f9ed64ed9475bdf1532f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:CQXT2GTJU366ZQ5ZD4JOOZIVDI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraints on Self-Interacting Fuzzy Dark Matter from the Stellar Kinematics of the Dwarf Galaxy Leo II","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Stellar kinematics in Leo II constrain both the mass and self-interaction strength of fuzzy dark matter particles.","cross_cats":["astro-ph.GA","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Peng-fei Yin, Xiao-Jun Bi, Yi Zhao, Yu-Ming Yang","submitted_at":"2026-05-17T01:00:54Z","abstract_excerpt":"The one-parameter fuzzy dark matter (FDM) model has faced increasingly stringent constraints from both Lyman-$\\alpha$ forest observations and local measurements of dwarf galaxies. A natural extension to mitigate these limits is the inclusion of FDM self-interactions. In this study, we derive constraints in the two-dimensional parameter space $(m_a, f_a)$ using the dark matter density profile inferred from a Jeans analysis of the stellar kinematics in the dwarf galaxy Leo II, which has previously been employed to constrain non-interacting FDM. We find that, for a fixed particle mass $m_a$, attr"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"For either attractive or repulsive self-interaction with strength f_a^{-1} ≲ 10^{-14} GeV^{-1}, the 95% confidence-level lower limits on m_a lie within the range (1-10)×10^{-22} eV, with the precise bounds depending on the statistical method employed.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The Jeans analysis that supplies the target dark-matter density profile assumes spherical symmetry, dynamical equilibrium, and a specific stellar velocity anisotropy profile; any violation of these assumptions would shift the inferred central density and thereby alter the derived (m_a, f_a) bounds.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Using Jeans analysis of Leo II stellar kinematics, the paper constrains the fuzzy dark matter mass m_a and self-interaction parameter f_a, finding 95% CL lower limits on m_a in the (1-10)×10^{-22} eV range for |f_a^{-1}| ≲ 10^{-14} GeV^{-1}.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Stellar kinematics in Leo II constrain both the mass and self-interaction strength of fuzzy dark matter particles.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"712aa069c74879fe43499878cba3c38a2f1b2a1d075b03959be8b007fa51cea1"},"source":{"id":"2605.17211","kind":"arxiv","version":1},"verdict":{"id":"fab0e079-15ab-433f-946e-a34f9932c782","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T23:31:03.487897Z","strongest_claim":"For either attractive or repulsive self-interaction with strength f_a^{-1} ≲ 10^{-14} GeV^{-1}, the 95% confidence-level lower limits on m_a lie within the range (1-10)×10^{-22} eV, with the precise bounds depending on the statistical method employed.","one_line_summary":"Using Jeans analysis of Leo II stellar kinematics, the paper constrains the fuzzy dark matter mass m_a and self-interaction parameter f_a, finding 95% CL lower limits on m_a in the (1-10)×10^{-22} eV range for |f_a^{-1}| ≲ 10^{-14} GeV^{-1}.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The Jeans analysis that supplies the target dark-matter density profile assumes spherical symmetry, dynamical equilibrium, and a specific stellar velocity anisotropy profile; any violation of these assumptions would shift the inferred central density and thereby alter the derived (m_a, f_a) bounds.","pith_extraction_headline":"Stellar kinematics in Leo II constrain both the mass and self-interaction strength of fuzzy dark matter particles."},"integrity":{"clean":false,"summary":{"advisory":1,"critical":0,"by_detector":{"doi_compliance":{"total":1,"advisory":1,"critical":0,"informational":0}},"informational":0},"endpoint":"/pith/2605.17211/integrity.json","findings":[{"note":"DOI in the printed bibliography is fragmented by whitespace or line breaks. A longer candidate (10.1103/phys-revd.105.023512) was visible in the surrounding text but could not be confirmed against doi.org as printed.","detector":"doi_compliance","severity":"advisory","ref_index":44,"audited_at":"2026-05-19T23:41:47.455924Z","detected_doi":"10.1103/phys-revd.105.023512","finding_type":"recoverable_identifier","verdict_class":"incontrovertible","detected_arxiv_id":null}],"available":true,"detectors_run":[{"name":"doi_title_agreement","ran_at":"2026-05-20T00:01:20.709458Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T23:41:47.455924Z","status":"completed","version":"1.0.0","findings_count":1},{"name":"ai_meta_artifact","ran_at":"2026-05-19T22:33:23.725347Z","status":"skipped","version":"1.0.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-19T22:01:57.930275Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"fe6da8e2bacd602cbf15a8fa23a31b0261c597600b1f316f36b366e35d1b0e44"},"references":{"count":52,"sample":[{"doi":"","year":null,"title":"Although the enclosed mass profile can be obtained by direct integration of Eq","work_id":"73eef9b7-86cd-4acf-890f-6d2440943dc7","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2000,"title":"W. Hu, R. Barkana, and A. Gruzinov, Fuzzy Cold Dark Matter: The Wave Properties of Ultralight Particles, Physical Review Letters85, 1158–1161 (2000)","work_id":"ab91e977-3aba-40f7-b50a-607709305b3e","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2000,"title":"Fluid Dark Matter","work_id":"cc29cefe-0b7e-412e-a5dd-e8830f6c5bdc","ref_index":3,"cited_arxiv_id":"astro-ph/0002495","is_internal_anchor":true},{"doi":"10.1103/physrevd.95.043541","year":2017,"title":"P., Tremaine, S., & Witten, E","work_id":"6a6699bc-7d38-4b0d-86b3-26eade8fd1b2","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2021,"title":"Hui, Wave Dark Matter, Annual Review of Astronomy and Astrophysics59, 247–289 (2021)","work_id":"75e0a75a-9387-4061-ab94-b456964808b2","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":52,"snapshot_sha256":"f39d7cc7e7f77cc4a2b441d3728a7597a1be19e4e0875cb91baa2c1d5db95b8d","internal_anchors":15},"formal_canon":{"evidence_count":2,"snapshot_sha256":"7adcde50cb505668282e2c626b6e4a9fe74d58cb64901c6df50dec195ab3a076"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":"fab0e079-15ab-433f-946e-a34f9932c782"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-20T00:03:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3wRhthfy+XCuuxpBV1sqX8/8yVzv0jvKuPzdFIeMFCX6c03/SSPrFuORZxA/I1GOEF8bOqYoTU53FI4c1hdmCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T17:20:25.204144Z"},"content_sha256":"b236a599e90a389cc4e8913722efda7419d4cc2d27daa78855a4836992c67c1b","schema_version":"1.0","event_id":"sha256:b236a599e90a389cc4e8913722efda7419d4cc2d27daa78855a4836992c67c1b"},{"event_type":"integrity_finding","subject_pith_number":"pith:2026:CQXT2GTJU366ZQ5ZD4JOOZIVDI","target":"integrity","payload":{"note":"DOI in the printed bibliography is fragmented by whitespace or line breaks. A longer candidate (10.1103/phys-revd.105.023512) was visible in the surrounding text but could not be confirmed against doi.org as printed.","snippet":"T. D. Yavetz, X. Li, and L. Hui, Construction of wave dark matter halos: Numerical algorithm and analyti- cal constraints, Physical Review D105, 10.1103/phys- revd.105.023512 (2022)","arxiv_id":"2605.17211","detector":"doi_compliance","evidence":{"ref_index":44,"verdict_class":"incontrovertible","resolved_title":null,"printed_excerpt":"T. D. Yavetz, X. Li, and L. Hui, Construction of wave dark matter halos: Numerical algorithm and analyti- cal constraints, Physical Review D105, 10.1103/phys- revd.105.023512 (2022)","reconstructed_doi":"10.1103/phys-revd.105.023512"},"severity":"advisory","ref_index":44,"audited_at":"2026-05-19T23:41:47.455924Z","event_type":"pith.integrity.v1","detected_doi":"10.1103/phys-revd.105.023512","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"recoverable_identifier","evidence_hash":"0a5a8abd55a391696219fd77cfba5bea5574881c34353d206901b21b0d372c02","paper_version":1,"verdict_class":"incontrovertible","resolved_title":null,"detector_version":"1.0.0","detected_arxiv_id":null,"integrity_event_id":3663,"payload_sha256":"2241aa4e07a2a646ad404d2180aa29dabbd71746db7a40aefa24feecefb267dc","signature_b64":"ITDowK8a48Fv5nJYCKJa0x4yySuGeCfUr2VsESUh7mmDBIu2Z+kLx7zzads83II/qTJ1yxe0hVu3aeP6oXiOAw==","signing_key_id":"pith-v1-2026-05"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-19T23:42:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5g3AtZgfvgMIaMaRzIRQE8asjTWTIiCSaG7anDY7dbHV8nwW7w+m8LFQNxVIU2r4ebU/IBH3StH74FIn9dlDBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T17:20:25.205750Z"},"content_sha256":"92685e54748bc7d2ddfd5664ab209a49394229a0d955bdc2c8efdbd81eed94be","schema_version":"1.0","event_id":"sha256:92685e54748bc7d2ddfd5664ab209a49394229a0d955bdc2c8efdbd81eed94be"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CQXT2GTJU366ZQ5ZD4JOOZIVDI/bundle.json","state_url":"https://pith.science/pith/CQXT2GTJU366ZQ5ZD4JOOZIVDI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CQXT2GTJU366ZQ5ZD4JOOZIVDI/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":"2026-05-22T17:20:25Z","links":{"resolver":"https://pith.science/pith/CQXT2GTJU366ZQ5ZD4JOOZIVDI","bundle":"https://pith.science/pith/CQXT2GTJU366ZQ5ZD4JOOZIVDI/bundle.json","state":"https://pith.science/pith/CQXT2GTJU366ZQ5ZD4JOOZIVDI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CQXT2GTJU366ZQ5ZD4JOOZIVDI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:CQXT2GTJU366ZQ5ZD4JOOZIVDI","merge_version":"pith-open-graph-merge-v1","event_count":3,"valid_event_count":3,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"50b0e4aedb205df66eea12602931688f2217371ff72a9c86bdd9235e7c5883da","cross_cats_sorted":["astro-ph.GA","hep-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-17T01:00:54Z","title_canon_sha256":"7ab28a965803358badc72ec4f7d5cd1a8b4dc75380e9a62ea2679838ac80a2a5"},"schema_version":"1.0","source":{"id":"2605.17211","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.17211","created_at":"2026-05-20T00:03:45Z"},{"alias_kind":"arxiv_version","alias_value":"2605.17211v1","created_at":"2026-05-20T00:03:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.17211","created_at":"2026-05-20T00:03:45Z"},{"alias_kind":"pith_short_12","alias_value":"CQXT2GTJU366","created_at":"2026-05-20T00:03:45Z"},{"alias_kind":"pith_short_16","alias_value":"CQXT2GTJU366ZQ5Z","created_at":"2026-05-20T00:03:45Z"},{"alias_kind":"pith_short_8","alias_value":"CQXT2GTJ","created_at":"2026-05-20T00:03:45Z"}],"graph_snapshots":[{"event_id":"sha256:b236a599e90a389cc4e8913722efda7419d4cc2d27daa78855a4836992c67c1b","target":"graph","created_at":"2026-05-20T00:03:45Z","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":4,"items":[{"attestation":"unclaimed","claim_id":"C1","kind":"strongest_claim","source":"verdict.strongest_claim","status":"machine_extracted","text":"For either attractive or repulsive self-interaction with strength f_a^{-1} ≲ 10^{-14} GeV^{-1}, the 95% confidence-level lower limits on m_a lie within the range (1-10)×10^{-22} eV, with the precise bounds depending on the statistical method employed."},{"attestation":"unclaimed","claim_id":"C2","kind":"weakest_assumption","source":"verdict.weakest_assumption","status":"machine_extracted","text":"The Jeans analysis that supplies the target dark-matter density profile assumes spherical symmetry, dynamical equilibrium, and a specific stellar velocity anisotropy profile; any violation of these assumptions would shift the inferred central density and thereby alter the derived (m_a, f_a) bounds."},{"attestation":"unclaimed","claim_id":"C3","kind":"one_line_summary","source":"verdict.one_line_summary","status":"machine_extracted","text":"Using Jeans analysis of Leo II stellar kinematics, the paper constrains the fuzzy dark matter mass m_a and self-interaction parameter f_a, finding 95% CL lower limits on m_a in the (1-10)×10^{-22} eV range for |f_a^{-1}| ≲ 10^{-14} GeV^{-1}."},{"attestation":"unclaimed","claim_id":"C4","kind":"headline","source":"verdict.pith_extraction.headline","status":"machine_extracted","text":"Stellar kinematics in Leo II constrain both the mass and self-interaction strength of fuzzy dark matter particles."}],"snapshot_sha256":"712aa069c74879fe43499878cba3c38a2f1b2a1d075b03959be8b007fa51cea1"},"formal_canon":{"evidence_count":2,"snapshot_sha256":"7adcde50cb505668282e2c626b6e4a9fe74d58cb64901c6df50dec195ab3a076"},"integrity":{"available":true,"clean":false,"detectors_run":[{"findings_count":0,"name":"doi_title_agreement","ran_at":"2026-05-20T00:01:20.709458Z","status":"completed","version":"1.0.0"},{"findings_count":1,"name":"doi_compliance","ran_at":"2026-05-19T23:41:47.455924Z","status":"completed","version":"1.0.0"},{"findings_count":0,"name":"ai_meta_artifact","ran_at":"2026-05-19T22:33:23.725347Z","status":"skipped","version":"1.0.0"},{"findings_count":0,"name":"claim_evidence","ran_at":"2026-05-19T22:01:57.930275Z","status":"completed","version":"1.0.0"}],"endpoint":"/pith/2605.17211/integrity.json","findings":[{"audited_at":"2026-05-19T23:41:47.455924Z","detected_arxiv_id":null,"detected_doi":"10.1103/phys-revd.105.023512","detector":"doi_compliance","finding_type":"recoverable_identifier","note":"DOI in the printed bibliography is fragmented by whitespace or line breaks. A longer candidate (10.1103/phys-revd.105.023512) was visible in the surrounding text but could not be confirmed against doi.org as printed.","ref_index":44,"severity":"advisory","verdict_class":"incontrovertible"}],"snapshot_sha256":"fe6da8e2bacd602cbf15a8fa23a31b0261c597600b1f316f36b366e35d1b0e44","summary":{"advisory":1,"by_detector":{"doi_compliance":{"advisory":1,"critical":0,"informational":0,"total":1}},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The one-parameter fuzzy dark matter (FDM) model has faced increasingly stringent constraints from both Lyman-$\\alpha$ forest observations and local measurements of dwarf galaxies. A natural extension to mitigate these limits is the inclusion of FDM self-interactions. In this study, we derive constraints in the two-dimensional parameter space $(m_a, f_a)$ using the dark matter density profile inferred from a Jeans analysis of the stellar kinematics in the dwarf galaxy Leo II, which has previously been employed to constrain non-interacting FDM. We find that, for a fixed particle mass $m_a$, attr","authors_text":"Peng-fei Yin, Xiao-Jun Bi, Yi Zhao, Yu-Ming Yang","cross_cats":["astro-ph.GA","hep-ph"],"headline":"Stellar kinematics in Leo II constrain both the mass and self-interaction strength of fuzzy dark matter particles.","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-17T01:00:54Z","title":"Constraints on Self-Interacting Fuzzy Dark Matter from the Stellar Kinematics of the Dwarf Galaxy Leo II"},"references":{"count":52,"internal_anchors":15,"resolved_work":52,"sample":[{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":1,"title":"Although the enclosed mass profile can be obtained by direct integration of Eq","work_id":"73eef9b7-86cd-4acf-890f-6d2440943dc7","year":null},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":2,"title":"W. Hu, R. Barkana, and A. Gruzinov, Fuzzy Cold Dark Matter: The Wave Properties of Ultralight Particles, Physical Review Letters85, 1158–1161 (2000)","work_id":"ab91e977-3aba-40f7-b50a-607709305b3e","year":2000},{"cited_arxiv_id":"astro-ph/0002495","doi":"","is_internal_anchor":true,"ref_index":3,"title":"Fluid Dark Matter","work_id":"cc29cefe-0b7e-412e-a5dd-e8830f6c5bdc","year":2000},{"cited_arxiv_id":"","doi":"10.1103/physrevd.95.043541","is_internal_anchor":false,"ref_index":4,"title":"P., Tremaine, S., & Witten, E","work_id":"6a6699bc-7d38-4b0d-86b3-26eade8fd1b2","year":2017},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":5,"title":"Hui, Wave Dark Matter, Annual Review of Astronomy and Astrophysics59, 247–289 (2021)","work_id":"75e0a75a-9387-4061-ab94-b456964808b2","year":2021}],"snapshot_sha256":"f39d7cc7e7f77cc4a2b441d3728a7597a1be19e4e0875cb91baa2c1d5db95b8d"},"source":{"id":"2605.17211","kind":"arxiv","version":1},"verdict":{"created_at":"2026-05-19T23:31:03.487897Z","id":"fab0e079-15ab-433f-946e-a34f9932c782","model_set":{"reader":"grok-4.3"},"one_line_summary":"Using Jeans analysis of Leo II stellar kinematics, the paper constrains the fuzzy dark matter mass m_a and self-interaction parameter f_a, finding 95% CL lower limits on m_a in the (1-10)×10^{-22} eV range for |f_a^{-1}| ≲ 10^{-14} GeV^{-1}.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"Stellar kinematics in Leo II constrain both the mass and self-interaction strength of fuzzy dark matter particles.","strongest_claim":"For either attractive or repulsive self-interaction with strength f_a^{-1} ≲ 10^{-14} GeV^{-1}, the 95% confidence-level lower limits on m_a lie within the range (1-10)×10^{-22} eV, with the precise bounds depending on the statistical method employed.","weakest_assumption":"The Jeans analysis that supplies the target dark-matter density profile assumes spherical symmetry, dynamical equilibrium, and a specific stellar velocity anisotropy profile; any violation of these assumptions would shift the inferred central density and thereby alter the derived (m_a, f_a) bounds."}},"verdict_id":"fab0e079-15ab-433f-946e-a34f9932c782"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:a085dd489eb4ab88b20c5229200e0f62204838666bc4f9ed64ed9475bdf1532f","target":"record","created_at":"2026-05-20T00:03:45Z","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":"50b0e4aedb205df66eea12602931688f2217371ff72a9c86bdd9235e7c5883da","cross_cats_sorted":["astro-ph.GA","hep-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-17T01:00:54Z","title_canon_sha256":"7ab28a965803358badc72ec4f7d5cd1a8b4dc75380e9a62ea2679838ac80a2a5"},"schema_version":"1.0","source":{"id":"2605.17211","kind":"arxiv","version":1}},"canonical_sha256":"142f3d1a69a6fdecc3b91f12e765151a0e95fabd9361c1b7af2785a20a2cc757","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"142f3d1a69a6fdecc3b91f12e765151a0e95fabd9361c1b7af2785a20a2cc757","first_computed_at":"2026-05-20T00:03:45.451689Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:03:45.451689Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Yj0jD7mvXWvo0swVGd3ecraPTcDBnX/ZqbA8WA85NkE6l0cGpmmGSRTv1xkG/ZRsbQWvzdtiQfHgqpNHeXykAQ==","signature_status":"signed_v1","signed_at":"2026-05-20T00:03:45.452775Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.17211","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:92685e54748bc7d2ddfd5664ab209a49394229a0d955bdc2c8efdbd81eed94be","sha256:a085dd489eb4ab88b20c5229200e0f62204838666bc4f9ed64ed9475bdf1532f","sha256:b236a599e90a389cc4e8913722efda7419d4cc2d27daa78855a4836992c67c1b"],"state_sha256":"aa1069ed4c9053b6b9ad3c365b0c94ce3a22dec0d220a18cd5eec0b7b18e05c5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rszPdKveJrvRJVOjrsOarDZrb4GotUSSI5UMazsj/58oVtn1VwU93Ww20JRn2ycq317toQtWLahmUX6LMrcoCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T17:20:25.211142Z","bundle_sha256":"9647a9db5909e83c578510f827e48e77e3ac4b85230ab48943d1cd37a1958d5e"}}