{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:H2EIOVXKDEPH4HLCVYISP5SP4N","short_pith_number":"pith:H2EIOVXK","canonical_record":{"source":{"id":"1811.08912","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-11-21T19:00:15Z","cross_cats_sorted":[],"title_canon_sha256":"b1642f128cba9caab6a66beab3e910b0214d3da53ad41ad1d731d5ebd335d47d","abstract_canon_sha256":"0ef0fc299a49b74dfb227fc5a6a1d8e71ad582e7316645db01df31860f54b382"},"schema_version":"1.0"},"canonical_sha256":"3e888756ea191e7e1d62ae1127f64fe35d3dd9680faa4261b2cd542a51a40c74","source":{"kind":"arxiv","id":"1811.08912","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.08912","created_at":"2026-05-17T23:55:43Z"},{"alias_kind":"arxiv_version","alias_value":"1811.08912v1","created_at":"2026-05-17T23:55:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.08912","created_at":"2026-05-17T23:55:43Z"},{"alias_kind":"pith_short_12","alias_value":"H2EIOVXKDEPH","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"H2EIOVXKDEPH4HLC","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"H2EIOVXK","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:H2EIOVXKDEPH4HLCVYISP5SP4N","target":"record","payload":{"canonical_record":{"source":{"id":"1811.08912","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-11-21T19:00:15Z","cross_cats_sorted":[],"title_canon_sha256":"b1642f128cba9caab6a66beab3e910b0214d3da53ad41ad1d731d5ebd335d47d","abstract_canon_sha256":"0ef0fc299a49b74dfb227fc5a6a1d8e71ad582e7316645db01df31860f54b382"},"schema_version":"1.0"},"canonical_sha256":"3e888756ea191e7e1d62ae1127f64fe35d3dd9680faa4261b2cd542a51a40c74","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:43.693541Z","signature_b64":"I3yI0Ch2dVXr6iXVKD3Yiua6Kyg85sQqdrLymilqBneGYsnObi14xVGJJ5vy/CaDC1iSp07nmeIr/vGY58+RAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3e888756ea191e7e1d62ae1127f64fe35d3dd9680faa4261b2cd542a51a40c74","last_reissued_at":"2026-05-17T23:55:43.692811Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:43.692811Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.08912","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":"2026-05-17T23:55:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZTGB/nCrcw5XNUNuLAXmttK5XLXk0nfR8MOnwX5El6+VHJIwPknmrAtbDgjcIAVJLIlixJB0vGr++NOUXDpQBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:53:45.834017Z"},"content_sha256":"cf17310f0038809c4e4dd7b32431e732ae89e78d4a7a3a5735f27426f31f2e73","schema_version":"1.0","event_id":"sha256:cf17310f0038809c4e4dd7b32431e732ae89e78d4a7a3a5735f27426f31f2e73"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:H2EIOVXKDEPH4HLCVYISP5SP4N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Study of the X-ray pulsar IGR J19294+1816 with NuSTAR: detection of cyclotron line and transition to accretion from the cold disc","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Alexander A. Lutovinov, Alexander A. Mushtukov, Juri Poutanen, Sergey S. Tsygankov, Victor Doroshenko","submitted_at":"2018-11-21T19:00:15Z","abstract_excerpt":"In the work we present the results of two deep broad-band observations of the poorly studied X-ray pulsar IGR J19294+1816 obtained with the NuSTAR observatory. The source was observed during Type I outburst and in the quiescent state. In the bright state a cyclotron absorption line in the energy spectrum was discovered at $E_{\\rm cyc}=42.8\\pm0.7$ keV. Spectral and timing analysis prove the ongoing accretion also during the quiescent state of the source. Based on the long-term flux evolution, particularly on the transition of the source to the bright quiescent state with luminosity around $10^{"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.08912","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":"2026-05-17T23:55:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FnCBPHez1XhyhktPv4qkZq6pil2oMoTkJ6LaS/x/O4G6vAc0AwnRPVPRAvB1KUVzGGWMPipQjjp0zfifkBC+CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:53:45.834741Z"},"content_sha256":"71e8237833e3af3d382e137ae435486d86a2815a0a8ee867e3ff2b129c89bec4","schema_version":"1.0","event_id":"sha256:71e8237833e3af3d382e137ae435486d86a2815a0a8ee867e3ff2b129c89bec4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H2EIOVXKDEPH4HLCVYISP5SP4N/bundle.json","state_url":"https://pith.science/pith/H2EIOVXKDEPH4HLCVYISP5SP4N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H2EIOVXKDEPH4HLCVYISP5SP4N/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":"2026-05-29T22:53:45Z","links":{"resolver":"https://pith.science/pith/H2EIOVXKDEPH4HLCVYISP5SP4N","bundle":"https://pith.science/pith/H2EIOVXKDEPH4HLCVYISP5SP4N/bundle.json","state":"https://pith.science/pith/H2EIOVXKDEPH4HLCVYISP5SP4N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H2EIOVXKDEPH4HLCVYISP5SP4N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:H2EIOVXKDEPH4HLCVYISP5SP4N","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":"0ef0fc299a49b74dfb227fc5a6a1d8e71ad582e7316645db01df31860f54b382","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-11-21T19:00:15Z","title_canon_sha256":"b1642f128cba9caab6a66beab3e910b0214d3da53ad41ad1d731d5ebd335d47d"},"schema_version":"1.0","source":{"id":"1811.08912","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.08912","created_at":"2026-05-17T23:55:43Z"},{"alias_kind":"arxiv_version","alias_value":"1811.08912v1","created_at":"2026-05-17T23:55:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.08912","created_at":"2026-05-17T23:55:43Z"},{"alias_kind":"pith_short_12","alias_value":"H2EIOVXKDEPH","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"H2EIOVXKDEPH4HLC","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"H2EIOVXK","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:71e8237833e3af3d382e137ae435486d86a2815a0a8ee867e3ff2b129c89bec4","target":"graph","created_at":"2026-05-17T23:55:43Z","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":"In the work we present the results of two deep broad-band observations of the poorly studied X-ray pulsar IGR J19294+1816 obtained with the NuSTAR observatory. The source was observed during Type I outburst and in the quiescent state. In the bright state a cyclotron absorption line in the energy spectrum was discovered at $E_{\\rm cyc}=42.8\\pm0.7$ keV. Spectral and timing analysis prove the ongoing accretion also during the quiescent state of the source. Based on the long-term flux evolution, particularly on the transition of the source to the bright quiescent state with luminosity around $10^{","authors_text":"Alexander A. Lutovinov, Alexander A. Mushtukov, Juri Poutanen, Sergey S. Tsygankov, Victor Doroshenko","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-11-21T19:00:15Z","title":"Study of the X-ray pulsar IGR J19294+1816 with NuSTAR: detection of cyclotron line and transition to accretion from the cold disc"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.08912","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:cf17310f0038809c4e4dd7b32431e732ae89e78d4a7a3a5735f27426f31f2e73","target":"record","created_at":"2026-05-17T23:55:43Z","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":"0ef0fc299a49b74dfb227fc5a6a1d8e71ad582e7316645db01df31860f54b382","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-11-21T19:00:15Z","title_canon_sha256":"b1642f128cba9caab6a66beab3e910b0214d3da53ad41ad1d731d5ebd335d47d"},"schema_version":"1.0","source":{"id":"1811.08912","kind":"arxiv","version":1}},"canonical_sha256":"3e888756ea191e7e1d62ae1127f64fe35d3dd9680faa4261b2cd542a51a40c74","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e888756ea191e7e1d62ae1127f64fe35d3dd9680faa4261b2cd542a51a40c74","first_computed_at":"2026-05-17T23:55:43.692811Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:43.692811Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I3yI0Ch2dVXr6iXVKD3Yiua6Kyg85sQqdrLymilqBneGYsnObi14xVGJJ5vy/CaDC1iSp07nmeIr/vGY58+RAw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:43.693541Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.08912","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cf17310f0038809c4e4dd7b32431e732ae89e78d4a7a3a5735f27426f31f2e73","sha256:71e8237833e3af3d382e137ae435486d86a2815a0a8ee867e3ff2b129c89bec4"],"state_sha256":"29c4f83a032f5780d5468a947f86b179ee77736a0120428d58728231c9665251"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DoMTRLwRT0rwdASMeRKjxdSPhEoa5Nq/Ne8dDj6NYkeTCeJRLAzCY6OHlHKB9+usEHXwBhwHEe7G9dHb8N1aDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T22:53:45.838767Z","bundle_sha256":"7ebcc1c5ea52d48ee5ea594885309cdee702e8a53750f1a99b6b4df0dcc46fce"}}