{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:3KQCXPT55ZG3AHNWLPKV6ELY5T","short_pith_number":"pith:3KQCXPT5","schema_version":"1.0","canonical_sha256":"daa02bbe7dee4db01db65bd55f1178ecc848b70df6233455e5b4e53e9a9d4617","source":{"kind":"arxiv","id":"2306.04870","version":1},"attestation_state":"computed","paper":{"title":"KMT-2022-BLG-2397: Brown Dwarf at the Upper Shore of the Einstein Desert","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Andrew Gould, Byeong-Gon Park, Cheongho Han, Chung-Uk Lee, Dong-Jin Kim, Dong-Joo Lee, Hongjing Yang, In-Gu Shin, Jennifer C. Yee, Kyu-Ha Hwang, Michael D. Albrow, Richard W. Pogge, Sang-Mok Cha, Seung-Lee Kim, Sun-Ju Chung, Weicheng Zang, Yongseok Lee, Yoon-Hyun Ryu, Yossi Shvartzvald, Youn Kil Jung","submitted_at":"2023-06-08T01:56:20Z","abstract_excerpt":"We measure the Einstein radius of the single-lens microlensing event KMT-2022-BLG-2397 to be theta_E=24.8 +- 3.6 uas, placing it at the upper shore of the Einstein Desert, 9 < theta_E / uas < 25, between free-floating planets (FFPs) and bulge brown dwarfs (BDs). In contrast to the six BD (25 < theta_E < 50) events presented by Gould+22, which all had giant-star source stars, KMT-2022-BLG-2397 has a dwarf-star source, with angular radius theta_* ~ 0.9 uas. This prompts us to study the relative utility of dwarf and giant sources for characterizing FFPs and BDs from finite-source point-lens (FSPL"},"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":"2306.04870","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2023-06-08T01:56:20Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"3fd82bb255b32b180cf2515cd797ff309a21a4d8dc41b8d8391fe8487aca871d","abstract_canon_sha256":"39982b9bf19d4331bf4eee5ee1eae867b557ebb7f69aca3459e7d64e2f387c12"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:41:39.537658Z","signature_b64":"7MwBob2NwvyatXnPqAATKQcRvzljU04Ez4Y4x5hvSc129kMVB+nAUZA+fQoSNiWyzhMEqAu0c+4vrwPoHJzHAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"daa02bbe7dee4db01db65bd55f1178ecc848b70df6233455e5b4e53e9a9d4617","last_reissued_at":"2026-07-05T06:41:39.537144Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:41:39.537144Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"KMT-2022-BLG-2397: Brown Dwarf at the Upper Shore of the Einstein Desert","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Andrew Gould, Byeong-Gon Park, Cheongho Han, Chung-Uk Lee, Dong-Jin Kim, Dong-Joo Lee, Hongjing Yang, In-Gu Shin, Jennifer C. Yee, Kyu-Ha Hwang, Michael D. Albrow, Richard W. Pogge, Sang-Mok Cha, Seung-Lee Kim, Sun-Ju Chung, Weicheng Zang, Yongseok Lee, Yoon-Hyun Ryu, Yossi Shvartzvald, Youn Kil Jung","submitted_at":"2023-06-08T01:56:20Z","abstract_excerpt":"We measure the Einstein radius of the single-lens microlensing event KMT-2022-BLG-2397 to be theta_E=24.8 +- 3.6 uas, placing it at the upper shore of the Einstein Desert, 9 < theta_E / uas < 25, between free-floating planets (FFPs) and bulge brown dwarfs (BDs). In contrast to the six BD (25 < theta_E < 50) events presented by Gould+22, which all had giant-star source stars, KMT-2022-BLG-2397 has a dwarf-star source, with angular radius theta_* ~ 0.9 uas. This prompts us to study the relative utility of dwarf and giant sources for characterizing FFPs and BDs from finite-source point-lens (FSPL"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.04870","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/2306.04870/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":"2306.04870","created_at":"2026-07-05T06:41:39.537202+00:00"},{"alias_kind":"arxiv_version","alias_value":"2306.04870v1","created_at":"2026-07-05T06:41:39.537202+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.04870","created_at":"2026-07-05T06:41:39.537202+00:00"},{"alias_kind":"pith_short_12","alias_value":"3KQCXPT55ZG3","created_at":"2026-07-05T06:41:39.537202+00:00"},{"alias_kind":"pith_short_16","alias_value":"3KQCXPT55ZG3AHNW","created_at":"2026-07-05T06:41:39.537202+00:00"},{"alias_kind":"pith_short_8","alias_value":"3KQCXPT5","created_at":"2026-07-05T06:41:39.537202+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/3KQCXPT55ZG3AHNWLPKV6ELY5T","json":"https://pith.science/pith/3KQCXPT55ZG3AHNWLPKV6ELY5T.json","graph_json":"https://pith.science/api/pith-number/3KQCXPT55ZG3AHNWLPKV6ELY5T/graph.json","events_json":"https://pith.science/api/pith-number/3KQCXPT55ZG3AHNWLPKV6ELY5T/events.json","paper":"https://pith.science/paper/3KQCXPT5"},"agent_actions":{"view_html":"https://pith.science/pith/3KQCXPT55ZG3AHNWLPKV6ELY5T","download_json":"https://pith.science/pith/3KQCXPT55ZG3AHNWLPKV6ELY5T.json","view_paper":"https://pith.science/paper/3KQCXPT5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2306.04870&json=true","fetch_graph":"https://pith.science/api/pith-number/3KQCXPT55ZG3AHNWLPKV6ELY5T/graph.json","fetch_events":"https://pith.science/api/pith-number/3KQCXPT55ZG3AHNWLPKV6ELY5T/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3KQCXPT55ZG3AHNWLPKV6ELY5T/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3KQCXPT55ZG3AHNWLPKV6ELY5T/action/storage_attestation","attest_author":"https://pith.science/pith/3KQCXPT55ZG3AHNWLPKV6ELY5T/action/author_attestation","sign_citation":"https://pith.science/pith/3KQCXPT55ZG3AHNWLPKV6ELY5T/action/citation_signature","submit_replication":"https://pith.science/pith/3KQCXPT55ZG3AHNWLPKV6ELY5T/action/replication_record"}},"created_at":"2026-07-05T06:41:39.537202+00:00","updated_at":"2026-07-05T06:41:39.537202+00:00"}