{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:7X3JZMP7CW7U6OHQGDZ3JBN2CK","short_pith_number":"pith:7X3JZMP7","canonical_record":{"source":{"id":"2202.00031","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-01-31T19:00:11Z","cross_cats_sorted":["astro-ph.IM","astro-ph.SR","cs.LG"],"title_canon_sha256":"cc7111656aedbd810510869aa32fbbed5a83a87604dc4f96807ca81b147d1233","abstract_canon_sha256":"10f5155bf39a0d2ef27149502e0de1f40e8f2a476203505d58b6b8e3d6994534"},"schema_version":"1.0"},"canonical_sha256":"fdf69cb1ff15bf4f38f030f3b485ba12bac339e0d06dec166a44c5f73b104054","source":{"kind":"arxiv","id":"2202.00031","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.00031","created_at":"2026-07-05T03:53:17Z"},{"alias_kind":"arxiv_version","alias_value":"2202.00031v1","created_at":"2026-07-05T03:53:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.00031","created_at":"2026-07-05T03:53:17Z"},{"alias_kind":"pith_short_12","alias_value":"7X3JZMP7CW7U","created_at":"2026-07-05T03:53:17Z"},{"alias_kind":"pith_short_16","alias_value":"7X3JZMP7CW7U6OHQ","created_at":"2026-07-05T03:53:17Z"},{"alias_kind":"pith_short_8","alias_value":"7X3JZMP7","created_at":"2026-07-05T03:53:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:7X3JZMP7CW7U6OHQGDZ3JBN2CK","target":"record","payload":{"canonical_record":{"source":{"id":"2202.00031","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-01-31T19:00:11Z","cross_cats_sorted":["astro-ph.IM","astro-ph.SR","cs.LG"],"title_canon_sha256":"cc7111656aedbd810510869aa32fbbed5a83a87604dc4f96807ca81b147d1233","abstract_canon_sha256":"10f5155bf39a0d2ef27149502e0de1f40e8f2a476203505d58b6b8e3d6994534"},"schema_version":"1.0"},"canonical_sha256":"fdf69cb1ff15bf4f38f030f3b485ba12bac339e0d06dec166a44c5f73b104054","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:53:17.724793Z","signature_b64":"+J9vG9CCwmYj//LyGuJ0Qqixf0vZk1emSEhKijHsqysRaN9L9AnS2gk3V0AIB2RSaoZ1gpdNmTkABUcdS6kpBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fdf69cb1ff15bf4f38f030f3b485ba12bac339e0d06dec166a44c5f73b104054","last_reissued_at":"2026-07-05T03:53:17.724329Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:53:17.724329Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2202.00031","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":"2026-07-05T03:53:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PvwoVJiFb5DPs7r78cTgE9cUViqg8AYyYnDxx9RGPWIW0oxeId/PCJv7CextvmQkBIFn13ssvmmBPSByJlC3Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T06:10:57.903404Z"},"content_sha256":"ccc38cd68ed20a545eddd17c6ea35031bac0fb11b44adaf98fa9ff29bdc9c038","schema_version":"1.0","event_id":"sha256:ccc38cd68ed20a545eddd17c6ea35031bac0fb11b44adaf98fa9ff29bdc9c038"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:7X3JZMP7CW7U6OHQGDZ3JBN2CK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"YOUNG Star detrending for Transiting Exoplanet Recovery (YOUNGSTER) II: Using Self-Organising Maps to explore young star variability in Sectors 1-13 of TESS data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","astro-ph.SR","cs.LG"],"primary_cat":"astro-ph.EP","authors_text":"David J. Armstrong, Don Pollacco, Matthew P. Battley","submitted_at":"2022-01-31T19:00:11Z","abstract_excerpt":"Young exoplanets and their corresponding host stars are fascinating laboratories for constraining the timescale of planetary evolution and planet-star interactions. However, because young stars are typically much more active than the older population, in order to discover more young exoplanets, greater knowledge of the wide array of young star variability is needed. Here Kohonen Self Organising Maps (SOMs) are used to explore young star variability present in the first year of observations from the Transiting Exoplanet Survey Satellite (TESS), with such knowledge valuable to perform targeted d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.00031","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/2202.00031/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":"2026-07-05T03:53:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/YzNdsZiTKWpCb7mNqq2Ns0/oYEDYQG5Vll8jjIpFkx043VXA+nh9R2gdfDMSiU/pJtT4QXgzxRzXzdlWGX1AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T06:10:57.903735Z"},"content_sha256":"c25785e6bbc49208e72d9a3720316f067cff6ecbd7bcbfd180b68899f314c358","schema_version":"1.0","event_id":"sha256:c25785e6bbc49208e72d9a3720316f067cff6ecbd7bcbfd180b68899f314c358"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7X3JZMP7CW7U6OHQGDZ3JBN2CK/bundle.json","state_url":"https://pith.science/pith/7X3JZMP7CW7U6OHQGDZ3JBN2CK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7X3JZMP7CW7U6OHQGDZ3JBN2CK/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":"2026-08-05T06:10:57Z","links":{"resolver":"https://pith.science/pith/7X3JZMP7CW7U6OHQGDZ3JBN2CK","bundle":"https://pith.science/pith/7X3JZMP7CW7U6OHQGDZ3JBN2CK/bundle.json","state":"https://pith.science/pith/7X3JZMP7CW7U6OHQGDZ3JBN2CK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7X3JZMP7CW7U6OHQGDZ3JBN2CK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:7X3JZMP7CW7U6OHQGDZ3JBN2CK","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":"10f5155bf39a0d2ef27149502e0de1f40e8f2a476203505d58b6b8e3d6994534","cross_cats_sorted":["astro-ph.IM","astro-ph.SR","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-01-31T19:00:11Z","title_canon_sha256":"cc7111656aedbd810510869aa32fbbed5a83a87604dc4f96807ca81b147d1233"},"schema_version":"1.0","source":{"id":"2202.00031","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.00031","created_at":"2026-07-05T03:53:17Z"},{"alias_kind":"arxiv_version","alias_value":"2202.00031v1","created_at":"2026-07-05T03:53:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.00031","created_at":"2026-07-05T03:53:17Z"},{"alias_kind":"pith_short_12","alias_value":"7X3JZMP7CW7U","created_at":"2026-07-05T03:53:17Z"},{"alias_kind":"pith_short_16","alias_value":"7X3JZMP7CW7U6OHQ","created_at":"2026-07-05T03:53:17Z"},{"alias_kind":"pith_short_8","alias_value":"7X3JZMP7","created_at":"2026-07-05T03:53:17Z"}],"graph_snapshots":[{"event_id":"sha256:c25785e6bbc49208e72d9a3720316f067cff6ecbd7bcbfd180b68899f314c358","target":"graph","created_at":"2026-07-05T03:53:17Z","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/2202.00031/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Young exoplanets and their corresponding host stars are fascinating laboratories for constraining the timescale of planetary evolution and planet-star interactions. However, because young stars are typically much more active than the older population, in order to discover more young exoplanets, greater knowledge of the wide array of young star variability is needed. Here Kohonen Self Organising Maps (SOMs) are used to explore young star variability present in the first year of observations from the Transiting Exoplanet Survey Satellite (TESS), with such knowledge valuable to perform targeted d","authors_text":"David J. Armstrong, Don Pollacco, Matthew P. Battley","cross_cats":["astro-ph.IM","astro-ph.SR","cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-01-31T19:00:11Z","title":"YOUNG Star detrending for Transiting Exoplanet Recovery (YOUNGSTER) II: Using Self-Organising Maps to explore young star variability in Sectors 1-13 of TESS data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.00031","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:ccc38cd68ed20a545eddd17c6ea35031bac0fb11b44adaf98fa9ff29bdc9c038","target":"record","created_at":"2026-07-05T03:53:17Z","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":"10f5155bf39a0d2ef27149502e0de1f40e8f2a476203505d58b6b8e3d6994534","cross_cats_sorted":["astro-ph.IM","astro-ph.SR","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-01-31T19:00:11Z","title_canon_sha256":"cc7111656aedbd810510869aa32fbbed5a83a87604dc4f96807ca81b147d1233"},"schema_version":"1.0","source":{"id":"2202.00031","kind":"arxiv","version":1}},"canonical_sha256":"fdf69cb1ff15bf4f38f030f3b485ba12bac339e0d06dec166a44c5f73b104054","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fdf69cb1ff15bf4f38f030f3b485ba12bac339e0d06dec166a44c5f73b104054","first_computed_at":"2026-07-05T03:53:17.724329Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:53:17.724329Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+J9vG9CCwmYj//LyGuJ0Qqixf0vZk1emSEhKijHsqysRaN9L9AnS2gk3V0AIB2RSaoZ1gpdNmTkABUcdS6kpBA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:53:17.724793Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.00031","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ccc38cd68ed20a545eddd17c6ea35031bac0fb11b44adaf98fa9ff29bdc9c038","sha256:c25785e6bbc49208e72d9a3720316f067cff6ecbd7bcbfd180b68899f314c358"],"state_sha256":"9b843a0b7872bda9692e0d417a6534d1c1f426fc5ee4fe03a746fbf48f5724ec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QRD77dhXehp9j+tFV1U7X7ObAAzdXRmazFgSvtYE+8DyrPRoFmv0el9MeQDs1zPJVX343HpwAbAayXI7giV+Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T06:10:57.906831Z","bundle_sha256":"f6fd6bf85f0c29a669f977879d7483d1db012b4e86086279d8b273c3e6536a75"}}