{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:33G427XYGQZ7PNLRVUS6MBES5U","short_pith_number":"pith:33G427XY","canonical_record":{"source":{"id":"1608.06801","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-08-24T13:01:39Z","cross_cats_sorted":[],"title_canon_sha256":"77642b738ad9c1238aa2bb6a61e937f19ad77db046342c8421c9fccf84a89fc4","abstract_canon_sha256":"eb06ca8473139a3075b8aeaa7a39c7affe66773dd20b85f5ed25c31cd5ff194b"},"schema_version":"1.0"},"canonical_sha256":"decdcd7ef83433f7b571ad25e60492ed1d02a85a83b5342b1f729cc97777a498","source":{"kind":"arxiv","id":"1608.06801","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.06801","created_at":"2026-05-18T01:03:17Z"},{"alias_kind":"arxiv_version","alias_value":"1608.06801v1","created_at":"2026-05-18T01:03:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.06801","created_at":"2026-05-18T01:03:17Z"},{"alias_kind":"pith_short_12","alias_value":"33G427XYGQZ7","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"33G427XYGQZ7PNLR","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"33G427XY","created_at":"2026-05-18T12:29:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:33G427XYGQZ7PNLRVUS6MBES5U","target":"record","payload":{"canonical_record":{"source":{"id":"1608.06801","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-08-24T13:01:39Z","cross_cats_sorted":[],"title_canon_sha256":"77642b738ad9c1238aa2bb6a61e937f19ad77db046342c8421c9fccf84a89fc4","abstract_canon_sha256":"eb06ca8473139a3075b8aeaa7a39c7affe66773dd20b85f5ed25c31cd5ff194b"},"schema_version":"1.0"},"canonical_sha256":"decdcd7ef83433f7b571ad25e60492ed1d02a85a83b5342b1f729cc97777a498","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:03:17.415736Z","signature_b64":"lU5qkixzsgok2gGTMBXD2rdq6c9URL5dgH7aQ7AA4wAn5i4ttdLx9hsWEunFE8HCO7aGVKcRYjyCDx+/uV4/Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"decdcd7ef83433f7b571ad25e60492ed1d02a85a83b5342b1f729cc97777a498","last_reissued_at":"2026-05-18T01:03:17.415151Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:03:17.415151Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.06801","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":"2026-05-18T01:03:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"26Cls9Uo3VsHagSi9hGs0gnlBERWu0nncDE6WfVUm2q+UPsWxK+V6VYD81etkgrSp67viq3JlGxhYLQV68lmCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T03:07:18.786283Z"},"content_sha256":"42e79efa186070e89f3034c9fccc148c0171d1479aa7a588b8f0d34f73235295","schema_version":"1.0","event_id":"sha256:42e79efa186070e89f3034c9fccc148c0171d1479aa7a588b8f0d34f73235295"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:33G427XYGQZ7PNLRVUS6MBES5U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detection of burning ashes from thermonuclear X-ray bursts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Cumming, E. Kuulkers, J. J. E. Kajava, J. N\\\"attil\\\"a, J. Poutanen, V. Suleimanov","submitted_at":"2016-08-24T13:01:39Z","abstract_excerpt":"When neutron stars (NS) accrete gas from low-mass binary companions, explosive nuclear burning reactions in the NS envelope fuse hydrogen and helium into heavier elements. The resulting thermonuclear (type-I) X-ray bursts produce energy spectra that are fit well with black bodies, but a significant number of burst observations show deviations from Planck spectra. Here we present our analysis of RXTE/PCA observations of X-ray bursts from the NS low-mass X-ray binary HETE J1900.1-2455. We have discovered that the non-Planckian spectra are caused by photo-ionization edges. The anti-correlation be"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.06801","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":"2026-05-18T01:03:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wSy17E8nZnl2F3zKgpldSnDjfsjYeDt/aOmdUu1kzsOSaztRUiJ2U+6gXtnbP9Llhzg9HVmPKQoL7BAYqQWGAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T03:07:18.786837Z"},"content_sha256":"b295a713b04905b833f553998bed60dd69ef9acecc2beab64ce06f936a0196bc","schema_version":"1.0","event_id":"sha256:b295a713b04905b833f553998bed60dd69ef9acecc2beab64ce06f936a0196bc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/33G427XYGQZ7PNLRVUS6MBES5U/bundle.json","state_url":"https://pith.science/pith/33G427XYGQZ7PNLRVUS6MBES5U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/33G427XYGQZ7PNLRVUS6MBES5U/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":"2026-06-05T03:07:18Z","links":{"resolver":"https://pith.science/pith/33G427XYGQZ7PNLRVUS6MBES5U","bundle":"https://pith.science/pith/33G427XYGQZ7PNLRVUS6MBES5U/bundle.json","state":"https://pith.science/pith/33G427XYGQZ7PNLRVUS6MBES5U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/33G427XYGQZ7PNLRVUS6MBES5U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:33G427XYGQZ7PNLRVUS6MBES5U","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":"eb06ca8473139a3075b8aeaa7a39c7affe66773dd20b85f5ed25c31cd5ff194b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-08-24T13:01:39Z","title_canon_sha256":"77642b738ad9c1238aa2bb6a61e937f19ad77db046342c8421c9fccf84a89fc4"},"schema_version":"1.0","source":{"id":"1608.06801","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.06801","created_at":"2026-05-18T01:03:17Z"},{"alias_kind":"arxiv_version","alias_value":"1608.06801v1","created_at":"2026-05-18T01:03:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.06801","created_at":"2026-05-18T01:03:17Z"},{"alias_kind":"pith_short_12","alias_value":"33G427XYGQZ7","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"33G427XYGQZ7PNLR","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"33G427XY","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:b295a713b04905b833f553998bed60dd69ef9acecc2beab64ce06f936a0196bc","target":"graph","created_at":"2026-05-18T01:03:17Z","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"},"paper":{"abstract_excerpt":"When neutron stars (NS) accrete gas from low-mass binary companions, explosive nuclear burning reactions in the NS envelope fuse hydrogen and helium into heavier elements. The resulting thermonuclear (type-I) X-ray bursts produce energy spectra that are fit well with black bodies, but a significant number of burst observations show deviations from Planck spectra. Here we present our analysis of RXTE/PCA observations of X-ray bursts from the NS low-mass X-ray binary HETE J1900.1-2455. We have discovered that the non-Planckian spectra are caused by photo-ionization edges. The anti-correlation be","authors_text":"A. Cumming, E. Kuulkers, J. J. E. Kajava, J. N\\\"attil\\\"a, J. Poutanen, V. Suleimanov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-08-24T13:01:39Z","title":"Detection of burning ashes from thermonuclear X-ray bursts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.06801","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":"sha256:42e79efa186070e89f3034c9fccc148c0171d1479aa7a588b8f0d34f73235295","target":"record","created_at":"2026-05-18T01:03:17Z","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":"eb06ca8473139a3075b8aeaa7a39c7affe66773dd20b85f5ed25c31cd5ff194b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-08-24T13:01:39Z","title_canon_sha256":"77642b738ad9c1238aa2bb6a61e937f19ad77db046342c8421c9fccf84a89fc4"},"schema_version":"1.0","source":{"id":"1608.06801","kind":"arxiv","version":1}},"canonical_sha256":"decdcd7ef83433f7b571ad25e60492ed1d02a85a83b5342b1f729cc97777a498","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"decdcd7ef83433f7b571ad25e60492ed1d02a85a83b5342b1f729cc97777a498","first_computed_at":"2026-05-18T01:03:17.415151Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:03:17.415151Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lU5qkixzsgok2gGTMBXD2rdq6c9URL5dgH7aQ7AA4wAn5i4ttdLx9hsWEunFE8HCO7aGVKcRYjyCDx+/uV4/Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T01:03:17.415736Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.06801","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:42e79efa186070e89f3034c9fccc148c0171d1479aa7a588b8f0d34f73235295","sha256:b295a713b04905b833f553998bed60dd69ef9acecc2beab64ce06f936a0196bc"],"state_sha256":"aacee456efbef3ca8e2df3c5ae078db858c0c455a4addbcbdf7b9e4432b15298"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f7L0VoHnO1xvcygbX2VK+9567wHIP+ZbEli/OO5SCZh7W6KI2c/hNz/bIrqBFRMh9x1G9kJHC5sAOAFHlPwYAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T03:07:18.789436Z","bundle_sha256":"0bc1d851ac3b0f59e1b25a5094fac893cd4c14dd2500c94f08db4b014a966406"}}