{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:X5ZMZJEHWELP2GKKE733BYAZ2F","short_pith_number":"pith:X5ZMZJEH","schema_version":"1.0","canonical_sha256":"bf72cca487b116fd194a27f7b0e019d153638800089d710631c2ff7f0d452709","source":{"kind":"arxiv","id":"2308.07263","version":2},"attestation_state":"computed","paper":{"title":"Can Planet 9 be an Axion Star?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"hep-ph","authors_text":"Haihao Shi, Haoran Di","submitted_at":"2023-08-14T16:48:46Z","abstract_excerpt":"The anomalous orbits of Trans-Neptunian Objects (TNOs) can be explained by the Planet 9 hypothesis. We propose that the Planet 9 can be an axion star. Axion stars are gravitational bound clusters condensed by QCD axions or axion-like particles (ALPs), which we call axions for brevity. We find that the probability of capturing an axion star by the solar system is the same order of magnitude as the probability of capturing a free floating planet (FFP), and even higher for the case of axion star, with axion star mass $5M_\\oplus\\approx1.5\\times10^{-5}M_\\odot$ and $\\Omega_{\\rm{AS}}/\\Omega_{\\rm{DM}}"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2308.07263","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2023-08-14T16:48:46Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"c92cc8be98f8fe468494163452a2589f8bc6af44e0a6861c728decd0fa930b11","abstract_canon_sha256":"445eb32ca4f8db554fb3359ec5a1093d8bf56d63f0068738977d74f546af3dd3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:17:30.484072Z","signature_b64":"tZ4ZdBTUZPj0UUiOJX6cw6azYFmrzxBBotELTrDDhiL4DANe/Akmo3OYZFUDux5gdS8EwvYqU8Nq8Dy9tC3sDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf72cca487b116fd194a27f7b0e019d153638800089d710631c2ff7f0d452709","last_reissued_at":"2026-07-05T07:17:30.483530Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:17:30.483530Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Can Planet 9 be an Axion Star?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"hep-ph","authors_text":"Haihao Shi, Haoran Di","submitted_at":"2023-08-14T16:48:46Z","abstract_excerpt":"The anomalous orbits of Trans-Neptunian Objects (TNOs) can be explained by the Planet 9 hypothesis. We propose that the Planet 9 can be an axion star. Axion stars are gravitational bound clusters condensed by QCD axions or axion-like particles (ALPs), which we call axions for brevity. We find that the probability of capturing an axion star by the solar system is the same order of magnitude as the probability of capturing a free floating planet (FFP), and even higher for the case of axion star, with axion star mass $5M_\\oplus\\approx1.5\\times10^{-5}M_\\odot$ and $\\Omega_{\\rm{AS}}/\\Omega_{\\rm{DM}}"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.07263","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/2308.07263/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2308.07263","created_at":"2026-07-05T07:17:30.483601+00:00"},{"alias_kind":"arxiv_version","alias_value":"2308.07263v2","created_at":"2026-07-05T07:17:30.483601+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.07263","created_at":"2026-07-05T07:17:30.483601+00:00"},{"alias_kind":"pith_short_12","alias_value":"X5ZMZJEHWELP","created_at":"2026-07-05T07:17:30.483601+00:00"},{"alias_kind":"pith_short_16","alias_value":"X5ZMZJEHWELP2GKK","created_at":"2026-07-05T07:17:30.483601+00:00"},{"alias_kind":"pith_short_8","alias_value":"X5ZMZJEH","created_at":"2026-07-05T07:17:30.483601+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2411.17186","citing_title":"Scalar-Induced Electromagnetic Radiation: Comparison with Axion-Like Particles and Implications for Modified Gravity","ref_index":47,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/X5ZMZJEHWELP2GKKE733BYAZ2F","json":"https://pith.science/pith/X5ZMZJEHWELP2GKKE733BYAZ2F.json","graph_json":"https://pith.science/api/pith-number/X5ZMZJEHWELP2GKKE733BYAZ2F/graph.json","events_json":"https://pith.science/api/pith-number/X5ZMZJEHWELP2GKKE733BYAZ2F/events.json","paper":"https://pith.science/paper/X5ZMZJEH"},"agent_actions":{"view_html":"https://pith.science/pith/X5ZMZJEHWELP2GKKE733BYAZ2F","download_json":"https://pith.science/pith/X5ZMZJEHWELP2GKKE733BYAZ2F.json","view_paper":"https://pith.science/paper/X5ZMZJEH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2308.07263&json=true","fetch_graph":"https://pith.science/api/pith-number/X5ZMZJEHWELP2GKKE733BYAZ2F/graph.json","fetch_events":"https://pith.science/api/pith-number/X5ZMZJEHWELP2GKKE733BYAZ2F/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/X5ZMZJEHWELP2GKKE733BYAZ2F/action/timestamp_anchor","attest_storage":"https://pith.science/pith/X5ZMZJEHWELP2GKKE733BYAZ2F/action/storage_attestation","attest_author":"https://pith.science/pith/X5ZMZJEHWELP2GKKE733BYAZ2F/action/author_attestation","sign_citation":"https://pith.science/pith/X5ZMZJEHWELP2GKKE733BYAZ2F/action/citation_signature","submit_replication":"https://pith.science/pith/X5ZMZJEHWELP2GKKE733BYAZ2F/action/replication_record"}},"created_at":"2026-07-05T07:17:30.483601+00:00","updated_at":"2026-07-05T07:17:30.483601+00:00"}