{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:VYHJMTQUBZQVPXQSJD56LEBHVK","short_pith_number":"pith:VYHJMTQU","canonical_record":{"source":{"id":"2012.15062","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-30T07:06:35Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"3897b07eec52056ded1a3ba02892dfe5f9c3a127b82830adfb7df1363abba0a8","abstract_canon_sha256":"4b23826b32a9c020fb227111287fbae3ecf2850c9df3cc6b72cad4ba680c00cf"},"schema_version":"1.0"},"canonical_sha256":"ae0e964e140e6157de1248fbe59027aabafdcd1c4938ec1538253e197bda0c9d","source":{"kind":"arxiv","id":"2012.15062","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.15062","created_at":"2026-07-05T02:03:04Z"},{"alias_kind":"arxiv_version","alias_value":"2012.15062v1","created_at":"2026-07-05T02:03:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.15062","created_at":"2026-07-05T02:03:04Z"},{"alias_kind":"pith_short_12","alias_value":"VYHJMTQUBZQV","created_at":"2026-07-05T02:03:04Z"},{"alias_kind":"pith_short_16","alias_value":"VYHJMTQUBZQVPXQS","created_at":"2026-07-05T02:03:04Z"},{"alias_kind":"pith_short_8","alias_value":"VYHJMTQU","created_at":"2026-07-05T02:03:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:VYHJMTQUBZQVPXQSJD56LEBHVK","target":"record","payload":{"canonical_record":{"source":{"id":"2012.15062","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-30T07:06:35Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"3897b07eec52056ded1a3ba02892dfe5f9c3a127b82830adfb7df1363abba0a8","abstract_canon_sha256":"4b23826b32a9c020fb227111287fbae3ecf2850c9df3cc6b72cad4ba680c00cf"},"schema_version":"1.0"},"canonical_sha256":"ae0e964e140e6157de1248fbe59027aabafdcd1c4938ec1538253e197bda0c9d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:03:04.154211Z","signature_b64":"YxXQNgmJUNGneTovqc9duvYazuyHFNYzDCK7TSqUZnBt3sXTz5+/M8irtLbGTvdGURcR397+MjZJNSBbETB3Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ae0e964e140e6157de1248fbe59027aabafdcd1c4938ec1538253e197bda0c9d","last_reissued_at":"2026-07-05T02:03:04.153709Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:03:04.153709Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2012.15062","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":"2026-07-05T02:03:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QSbX3kxjfP8eswX1v//1e6GYXGG0W/rxo1OPz4gRVVYJEIJjjKJJgtT20EWa3+hKqwMhS/m+wCbBMloO3QstCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T12:40:17.621592Z"},"content_sha256":"3e1280ccd8b155a41e3365e4069113cfcfa0a4713ebac3a1fc238b4f5d35fcaa","schema_version":"1.0","event_id":"sha256:3e1280ccd8b155a41e3365e4069113cfcfa0a4713ebac3a1fc238b4f5d35fcaa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:VYHJMTQUBZQVPXQSJD56LEBHVK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Coronae of an active fast rotator FR Cnc","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"Arti Joshi, Gurpreet Singh, I. S. Savanov, Jeewan C. Pandey, M. A. Nalivkin, S. A. Naroenkov, Subhajeet Karmakar","submitted_at":"2020-12-30T07:06:35Z","abstract_excerpt":"We present the first detailed X-ray study and simultaneous optical observations of the active fast rotating star FR Cnc. The X-ray spectra are found to be explained by two-temperature plasma model with temperature of cool and hot components of 0.34 and 1.1 keV, respectively. The X-ray light curve in the 0.5 -- 2.0 keV energy band is found to be rotationally modulated with the degree of rotational modulation of ~17%. We have also found that the X-ray light curve is anti-correlated with the optical light and colour curves in the sense that maximum X-ray light corresponds to minimum optical light"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.15062","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/2012.15062/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":"2026-07-05T02:03:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KRM2C+2k10QeZmwsBSJmEnMhx4DcWJK6pYkIhAuuvij4piCJkKsAOJ2gDSjgUOX47sulJFL8yzhqNd4iLML5BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T12:40:17.622141Z"},"content_sha256":"c1a42ebc94e3f89de13ed10cafd06d41c7444780b1b77b7f793a19e6589a65b5","schema_version":"1.0","event_id":"sha256:c1a42ebc94e3f89de13ed10cafd06d41c7444780b1b77b7f793a19e6589a65b5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VYHJMTQUBZQVPXQSJD56LEBHVK/bundle.json","state_url":"https://pith.science/pith/VYHJMTQUBZQVPXQSJD56LEBHVK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VYHJMTQUBZQVPXQSJD56LEBHVK/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":"2026-08-04T12:40:17Z","links":{"resolver":"https://pith.science/pith/VYHJMTQUBZQVPXQSJD56LEBHVK","bundle":"https://pith.science/pith/VYHJMTQUBZQVPXQSJD56LEBHVK/bundle.json","state":"https://pith.science/pith/VYHJMTQUBZQVPXQSJD56LEBHVK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VYHJMTQUBZQVPXQSJD56LEBHVK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:VYHJMTQUBZQVPXQSJD56LEBHVK","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":"4b23826b32a9c020fb227111287fbae3ecf2850c9df3cc6b72cad4ba680c00cf","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-30T07:06:35Z","title_canon_sha256":"3897b07eec52056ded1a3ba02892dfe5f9c3a127b82830adfb7df1363abba0a8"},"schema_version":"1.0","source":{"id":"2012.15062","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.15062","created_at":"2026-07-05T02:03:04Z"},{"alias_kind":"arxiv_version","alias_value":"2012.15062v1","created_at":"2026-07-05T02:03:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.15062","created_at":"2026-07-05T02:03:04Z"},{"alias_kind":"pith_short_12","alias_value":"VYHJMTQUBZQV","created_at":"2026-07-05T02:03:04Z"},{"alias_kind":"pith_short_16","alias_value":"VYHJMTQUBZQVPXQS","created_at":"2026-07-05T02:03:04Z"},{"alias_kind":"pith_short_8","alias_value":"VYHJMTQU","created_at":"2026-07-05T02:03:04Z"}],"graph_snapshots":[{"event_id":"sha256:c1a42ebc94e3f89de13ed10cafd06d41c7444780b1b77b7f793a19e6589a65b5","target":"graph","created_at":"2026-07-05T02:03:04Z","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/2012.15062/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the first detailed X-ray study and simultaneous optical observations of the active fast rotating star FR Cnc. The X-ray spectra are found to be explained by two-temperature plasma model with temperature of cool and hot components of 0.34 and 1.1 keV, respectively. The X-ray light curve in the 0.5 -- 2.0 keV energy band is found to be rotationally modulated with the degree of rotational modulation of ~17%. We have also found that the X-ray light curve is anti-correlated with the optical light and colour curves in the sense that maximum X-ray light corresponds to minimum optical light","authors_text":"Arti Joshi, Gurpreet Singh, I. S. Savanov, Jeewan C. Pandey, M. A. Nalivkin, S. A. Naroenkov, Subhajeet Karmakar","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-30T07:06:35Z","title":"Coronae of an active fast rotator FR Cnc"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.15062","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":"sha256:3e1280ccd8b155a41e3365e4069113cfcfa0a4713ebac3a1fc238b4f5d35fcaa","target":"record","created_at":"2026-07-05T02:03:04Z","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":"4b23826b32a9c020fb227111287fbae3ecf2850c9df3cc6b72cad4ba680c00cf","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-30T07:06:35Z","title_canon_sha256":"3897b07eec52056ded1a3ba02892dfe5f9c3a127b82830adfb7df1363abba0a8"},"schema_version":"1.0","source":{"id":"2012.15062","kind":"arxiv","version":1}},"canonical_sha256":"ae0e964e140e6157de1248fbe59027aabafdcd1c4938ec1538253e197bda0c9d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ae0e964e140e6157de1248fbe59027aabafdcd1c4938ec1538253e197bda0c9d","first_computed_at":"2026-07-05T02:03:04.153709Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:03:04.153709Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YxXQNgmJUNGneTovqc9duvYazuyHFNYzDCK7TSqUZnBt3sXTz5+/M8irtLbGTvdGURcR397+MjZJNSBbETB3Ag==","signature_status":"signed_v1","signed_at":"2026-07-05T02:03:04.154211Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.15062","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3e1280ccd8b155a41e3365e4069113cfcfa0a4713ebac3a1fc238b4f5d35fcaa","sha256:c1a42ebc94e3f89de13ed10cafd06d41c7444780b1b77b7f793a19e6589a65b5"],"state_sha256":"3e4564e4a0b528856ebabafed199b6d5ff1b7794e5134e5278eb3fac8b2f2686"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"odKYwkP9pK3XdVcFUWMAJdHgWjosdYnNyo+qHvY6ZN3nGvFL9T0IgwtzurXQcSI9xAWLbqwqmDpvntzV+S5nCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T12:40:17.625586Z","bundle_sha256":"bb478ddaa3696238e2e69f2246669d5dd5cc4d285fc03cc7e267bc2c491833ed"}}