{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:NQI2JC62AHXEU6YEXW2DSQGL3H","short_pith_number":"pith:NQI2JC62","canonical_record":{"source":{"id":"1811.02008","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-11-05T19:52:45Z","cross_cats_sorted":[],"title_canon_sha256":"d14968c5355fc5102db4b2d3dfcb59417ab6c9a2ef1fe0b3f234088fa41e2405","abstract_canon_sha256":"92c47758247c44eeb9dd3edbfbdb21a13fd4df7bb7bbfcf54c4d2f3f79e9c817"},"schema_version":"1.0"},"canonical_sha256":"6c11a48bda01ee4a7b04bdb43940cbd9eb5e905c49a633d44dcde8afb01eab77","source":{"kind":"arxiv","id":"1811.02008","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.02008","created_at":"2026-05-17T23:58:36Z"},{"alias_kind":"arxiv_version","alias_value":"1811.02008v1","created_at":"2026-05-17T23:58:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.02008","created_at":"2026-05-17T23:58:36Z"},{"alias_kind":"pith_short_12","alias_value":"NQI2JC62AHXE","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NQI2JC62AHXEU6YE","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NQI2JC62","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:NQI2JC62AHXEU6YEXW2DSQGL3H","target":"record","payload":{"canonical_record":{"source":{"id":"1811.02008","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-11-05T19:52:45Z","cross_cats_sorted":[],"title_canon_sha256":"d14968c5355fc5102db4b2d3dfcb59417ab6c9a2ef1fe0b3f234088fa41e2405","abstract_canon_sha256":"92c47758247c44eeb9dd3edbfbdb21a13fd4df7bb7bbfcf54c4d2f3f79e9c817"},"schema_version":"1.0"},"canonical_sha256":"6c11a48bda01ee4a7b04bdb43940cbd9eb5e905c49a633d44dcde8afb01eab77","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:58:36.643417Z","signature_b64":"sHc4LBkdD0A/rr2veVrhkbcmgfQlVAW9ejumphCCCG0irxTTKtnuykTw8mlPmXUQg9joRK4AvCae7TLIU/jdBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c11a48bda01ee4a7b04bdb43940cbd9eb5e905c49a633d44dcde8afb01eab77","last_reissued_at":"2026-05-17T23:58:36.642791Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:58:36.642791Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.02008","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":"2026-05-17T23:58:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EKv/lirmafrHMnSyzJ76tIK+O5YJfH+39wP+7wCZCFqjSa76wZsK39DFgXDvph8zYAm5pdR99yIX6QKZqOhUBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T10:16:34.446983Z"},"content_sha256":"9c8ef7d9f6edefc8369599c0fbfca2ee6e2049060c71f729a82b5a2529400554","schema_version":"1.0","event_id":"sha256:9c8ef7d9f6edefc8369599c0fbfca2ee6e2049060c71f729a82b5a2529400554"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:NQI2JC62AHXEU6YEXW2DSQGL3H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detection of a giant flare displaying quasi-periodic pulsations from a pre-main sequence M star with NGTS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Anne-Marie Broomhall, Chloe E. Pugh, Christopher A. Watson, Dmitrii Y. Kolotkov, Edward Gillen, Grant M. Kennedy, James A. G. Jackman, James McCormac, James S. Jenkins, Katja Poppenhaeger, Liam Raynard, Matthew R. Burleigh, Maximilian N. G\\\"unther, Peter J. Wheatley, Philipp Eigm\\\"uller, Richard G. West, Roberto Raddi, Sarah L. Casewell, Simon J. Murphy, St\\'ephane Udry, Tom Louden","submitted_at":"2018-11-05T19:52:45Z","abstract_excerpt":"We present the detection of an energetic flare on the pre-main sequence M3 star NGTS J121939.5-355557, which we estimate as only 2 Myr old. The flare had an energy of $3.2\\pm^{0.4}_{0.3}\\times 10^{36}$erg and a fractional amplitude of $7.2\\pm0.8$, making it one of the most energetic flares seen on an M star. The star is also X-ray active, in the saturated regime with $log L_{X}/L_{Bol} = -3.1$. In the flare peak we have identified multi-mode quasi-periodic pulsations formed of two statistically significant periods of approximately 320 and 660 seconds. This flare is one of the largest amplitude"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02008","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":""},"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":"2026-05-17T23:58:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xU6QwjMcjdYILhXhAG2idqHjryaLxiK5ItRoFmQA8vNpBZow4EKTS3XSroKV/7DDbMmT18YLeKeQ+pTUWnyZBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T10:16:34.447396Z"},"content_sha256":"188c8747515b24c3c26c863abbcbb5b88ee4ec65e86df02b6619204436e11528","schema_version":"1.0","event_id":"sha256:188c8747515b24c3c26c863abbcbb5b88ee4ec65e86df02b6619204436e11528"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NQI2JC62AHXEU6YEXW2DSQGL3H/bundle.json","state_url":"https://pith.science/pith/NQI2JC62AHXEU6YEXW2DSQGL3H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NQI2JC62AHXEU6YEXW2DSQGL3H/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":"2026-05-30T10:16:34Z","links":{"resolver":"https://pith.science/pith/NQI2JC62AHXEU6YEXW2DSQGL3H","bundle":"https://pith.science/pith/NQI2JC62AHXEU6YEXW2DSQGL3H/bundle.json","state":"https://pith.science/pith/NQI2JC62AHXEU6YEXW2DSQGL3H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NQI2JC62AHXEU6YEXW2DSQGL3H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:NQI2JC62AHXEU6YEXW2DSQGL3H","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":"92c47758247c44eeb9dd3edbfbdb21a13fd4df7bb7bbfcf54c4d2f3f79e9c817","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-11-05T19:52:45Z","title_canon_sha256":"d14968c5355fc5102db4b2d3dfcb59417ab6c9a2ef1fe0b3f234088fa41e2405"},"schema_version":"1.0","source":{"id":"1811.02008","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.02008","created_at":"2026-05-17T23:58:36Z"},{"alias_kind":"arxiv_version","alias_value":"1811.02008v1","created_at":"2026-05-17T23:58:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.02008","created_at":"2026-05-17T23:58:36Z"},{"alias_kind":"pith_short_12","alias_value":"NQI2JC62AHXE","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NQI2JC62AHXEU6YE","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NQI2JC62","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:188c8747515b24c3c26c863abbcbb5b88ee4ec65e86df02b6619204436e11528","target":"graph","created_at":"2026-05-17T23:58:36Z","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"},"paper":{"abstract_excerpt":"We present the detection of an energetic flare on the pre-main sequence M3 star NGTS J121939.5-355557, which we estimate as only 2 Myr old. The flare had an energy of $3.2\\pm^{0.4}_{0.3}\\times 10^{36}$erg and a fractional amplitude of $7.2\\pm0.8$, making it one of the most energetic flares seen on an M star. The star is also X-ray active, in the saturated regime with $log L_{X}/L_{Bol} = -3.1$. In the flare peak we have identified multi-mode quasi-periodic pulsations formed of two statistically significant periods of approximately 320 and 660 seconds. This flare is one of the largest amplitude","authors_text":"Anne-Marie Broomhall, Chloe E. Pugh, Christopher A. Watson, Dmitrii Y. Kolotkov, Edward Gillen, Grant M. Kennedy, James A. G. Jackman, James McCormac, James S. Jenkins, Katja Poppenhaeger, Liam Raynard, Matthew R. Burleigh, Maximilian N. G\\\"unther, Peter J. Wheatley, Philipp Eigm\\\"uller, Richard G. West, Roberto Raddi, Sarah L. Casewell, Simon J. Murphy, St\\'ephane Udry, Tom Louden","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-11-05T19:52:45Z","title":"Detection of a giant flare displaying quasi-periodic pulsations from a pre-main sequence M star with NGTS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02008","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":"sha256:9c8ef7d9f6edefc8369599c0fbfca2ee6e2049060c71f729a82b5a2529400554","target":"record","created_at":"2026-05-17T23:58:36Z","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":"92c47758247c44eeb9dd3edbfbdb21a13fd4df7bb7bbfcf54c4d2f3f79e9c817","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-11-05T19:52:45Z","title_canon_sha256":"d14968c5355fc5102db4b2d3dfcb59417ab6c9a2ef1fe0b3f234088fa41e2405"},"schema_version":"1.0","source":{"id":"1811.02008","kind":"arxiv","version":1}},"canonical_sha256":"6c11a48bda01ee4a7b04bdb43940cbd9eb5e905c49a633d44dcde8afb01eab77","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6c11a48bda01ee4a7b04bdb43940cbd9eb5e905c49a633d44dcde8afb01eab77","first_computed_at":"2026-05-17T23:58:36.642791Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:58:36.642791Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sHc4LBkdD0A/rr2veVrhkbcmgfQlVAW9ejumphCCCG0irxTTKtnuykTw8mlPmXUQg9joRK4AvCae7TLIU/jdBQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:58:36.643417Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.02008","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9c8ef7d9f6edefc8369599c0fbfca2ee6e2049060c71f729a82b5a2529400554","sha256:188c8747515b24c3c26c863abbcbb5b88ee4ec65e86df02b6619204436e11528"],"state_sha256":"7fe53211e45e0188c93cce8fc965e30aa2e315b78d5c2ab903c78a9e4d8540a2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v7Q9QfTU2b4pTW8d1niXUKmS2IT5Q9jq25c1l3CobYHn8lXQzLdL/ZQCnJjwtAlyiU2H3bAWkEsqnY3uy86QCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T10:16:34.449653Z","bundle_sha256":"6d5a43d9da153ce16e3e02de6e99c38e8c1ca104ca5420c8a47d65aeb45057b4"}}