{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:VOJGRHXOK2CTMRDLI7KTLQTDUR","short_pith_number":"pith:VOJGRHXO","canonical_record":{"source":{"id":"1807.10696","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-27T15:46:52Z","cross_cats_sorted":[],"title_canon_sha256":"32bb82af7b950e4a7ea7d425ce1ea41e2bc3d17fe029051f383fe8f24410cedb","abstract_canon_sha256":"7d6881c7ad846dde1d1fc4b2811a9ea1ba77dabecd58e9a121c18908f33b3dcb"},"schema_version":"1.0"},"canonical_sha256":"ab92689eee568536446b47d535c263a4426c2e0dfca42f5da9532baf7a1796e8","source":{"kind":"arxiv","id":"1807.10696","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.10696","created_at":"2026-05-18T00:08:05Z"},{"alias_kind":"arxiv_version","alias_value":"1807.10696v1","created_at":"2026-05-18T00:08:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.10696","created_at":"2026-05-18T00:08:05Z"},{"alias_kind":"pith_short_12","alias_value":"VOJGRHXOK2CT","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VOJGRHXOK2CTMRDL","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VOJGRHXO","created_at":"2026-05-18T12:32:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:VOJGRHXOK2CTMRDLI7KTLQTDUR","target":"record","payload":{"canonical_record":{"source":{"id":"1807.10696","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-27T15:46:52Z","cross_cats_sorted":[],"title_canon_sha256":"32bb82af7b950e4a7ea7d425ce1ea41e2bc3d17fe029051f383fe8f24410cedb","abstract_canon_sha256":"7d6881c7ad846dde1d1fc4b2811a9ea1ba77dabecd58e9a121c18908f33b3dcb"},"schema_version":"1.0"},"canonical_sha256":"ab92689eee568536446b47d535c263a4426c2e0dfca42f5da9532baf7a1796e8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:08:05.788710Z","signature_b64":"FBgm0JgYfyCFsTnk6LOvTbUKTra1CwuEJHhjg++7Z/kG5VsqzQSLXMz8YhmBYdFogrCRCcR6LN2FeLZC/Nc4DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ab92689eee568536446b47d535c263a4426c2e0dfca42f5da9532baf7a1796e8","last_reissued_at":"2026-05-18T00:08:05.788249Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:08:05.788249Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.10696","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":"2026-05-18T00:08:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0JU8pQqxgK7soE9FrLD+seGFG41nXNfy8wxztJycqjAijqEvrNxVYuQdWZZdDR8RHhCCmxii35WFLLvoAYDaBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T17:10:16.297447Z"},"content_sha256":"b07531155d8f42daecf47ff56cabb7591c6a060d3dd722d9a63487f70f32a541","schema_version":"1.0","event_id":"sha256:b07531155d8f42daecf47ff56cabb7591c6a060d3dd722d9a63487f70f32a541"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:VOJGRHXOK2CTMRDLI7KTLQTDUR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detection of a cyclotron line in SXP 15.3 during its 2017 outburst","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Biswajit Paul, Chandreyee Maitra, Frank Haberl, Georgios Vasilopoulos","submitted_at":"2018-07-27T15:46:52Z","abstract_excerpt":"We report the results of AstroSat and NuSTAR observations of the Be/X-ray binary pulsar SXP 15.3 in the Small Magellanic Cloud during its outburst in late 2017, when the source reached a luminosity level of ~ 10^{38} erg s^{-1}, close to the Eddington limit. The unprecedented broadband coverage of the source allowed us to perform timing and spectral analysis between 3 and 80 keV. The pulse profile exhibits a significant energy dependence, and morphs from a double peaked profile to a single broad pulse at energies >15 keV. This can be explained by a spectral hardening during an intensity dip se"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.10696","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":"2026-05-18T00:08:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4mAsLDqXP0EHr3pXeD01Xx10/TDX5fxzzy/aPvaseV7tJZWyIdkxhazZx4AwKbAuGs9yKKYzY+nHjauC6a74BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T17:10:16.297829Z"},"content_sha256":"710be18141a5d0cacd1f95bd17fbca992deb034e9119ce206484ea55d58646af","schema_version":"1.0","event_id":"sha256:710be18141a5d0cacd1f95bd17fbca992deb034e9119ce206484ea55d58646af"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VOJGRHXOK2CTMRDLI7KTLQTDUR/bundle.json","state_url":"https://pith.science/pith/VOJGRHXOK2CTMRDLI7KTLQTDUR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VOJGRHXOK2CTMRDLI7KTLQTDUR/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":"2026-05-30T17:10:16Z","links":{"resolver":"https://pith.science/pith/VOJGRHXOK2CTMRDLI7KTLQTDUR","bundle":"https://pith.science/pith/VOJGRHXOK2CTMRDLI7KTLQTDUR/bundle.json","state":"https://pith.science/pith/VOJGRHXOK2CTMRDLI7KTLQTDUR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VOJGRHXOK2CTMRDLI7KTLQTDUR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:VOJGRHXOK2CTMRDLI7KTLQTDUR","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":"7d6881c7ad846dde1d1fc4b2811a9ea1ba77dabecd58e9a121c18908f33b3dcb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-27T15:46:52Z","title_canon_sha256":"32bb82af7b950e4a7ea7d425ce1ea41e2bc3d17fe029051f383fe8f24410cedb"},"schema_version":"1.0","source":{"id":"1807.10696","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.10696","created_at":"2026-05-18T00:08:05Z"},{"alias_kind":"arxiv_version","alias_value":"1807.10696v1","created_at":"2026-05-18T00:08:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.10696","created_at":"2026-05-18T00:08:05Z"},{"alias_kind":"pith_short_12","alias_value":"VOJGRHXOK2CT","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VOJGRHXOK2CTMRDL","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VOJGRHXO","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:710be18141a5d0cacd1f95bd17fbca992deb034e9119ce206484ea55d58646af","target":"graph","created_at":"2026-05-18T00:08:05Z","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 report the results of AstroSat and NuSTAR observations of the Be/X-ray binary pulsar SXP 15.3 in the Small Magellanic Cloud during its outburst in late 2017, when the source reached a luminosity level of ~ 10^{38} erg s^{-1}, close to the Eddington limit. The unprecedented broadband coverage of the source allowed us to perform timing and spectral analysis between 3 and 80 keV. The pulse profile exhibits a significant energy dependence, and morphs from a double peaked profile to a single broad pulse at energies >15 keV. This can be explained by a spectral hardening during an intensity dip se","authors_text":"Biswajit Paul, Chandreyee Maitra, Frank Haberl, Georgios Vasilopoulos","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-27T15:46:52Z","title":"Detection of a cyclotron line in SXP 15.3 during its 2017 outburst"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.10696","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:b07531155d8f42daecf47ff56cabb7591c6a060d3dd722d9a63487f70f32a541","target":"record","created_at":"2026-05-18T00:08:05Z","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":"7d6881c7ad846dde1d1fc4b2811a9ea1ba77dabecd58e9a121c18908f33b3dcb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-27T15:46:52Z","title_canon_sha256":"32bb82af7b950e4a7ea7d425ce1ea41e2bc3d17fe029051f383fe8f24410cedb"},"schema_version":"1.0","source":{"id":"1807.10696","kind":"arxiv","version":1}},"canonical_sha256":"ab92689eee568536446b47d535c263a4426c2e0dfca42f5da9532baf7a1796e8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ab92689eee568536446b47d535c263a4426c2e0dfca42f5da9532baf7a1796e8","first_computed_at":"2026-05-18T00:08:05.788249Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:08:05.788249Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FBgm0JgYfyCFsTnk6LOvTbUKTra1CwuEJHhjg++7Z/kG5VsqzQSLXMz8YhmBYdFogrCRCcR6LN2FeLZC/Nc4DA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:08:05.788710Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.10696","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b07531155d8f42daecf47ff56cabb7591c6a060d3dd722d9a63487f70f32a541","sha256:710be18141a5d0cacd1f95bd17fbca992deb034e9119ce206484ea55d58646af"],"state_sha256":"019884a824adacadd8e6fb7813e3a3cc98ec5e026b7c30eb2022d19ac392c3ec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HyhbCv5Yd67FVxsW2fdpf9fL/m4GSr7+KyFL/uuU6Q5JLHLyZG0iV/AC+KWSmlEQIkftvvXkIuBN+69XNIyLCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T17:10:16.301696Z","bundle_sha256":"4eaafbe2d4275e567660f3f422ca7aa7b2c23821fe469452dcba221b1172ee7a"}}