{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:6H6TMDX4AHFE3JRZP7DITCZREE","short_pith_number":"pith:6H6TMDX4","canonical_record":{"source":{"id":"1510.00940","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-10-04T15:08:21Z","cross_cats_sorted":[],"title_canon_sha256":"219a24514bcab13c7408a8ec07c90c768799af683c54e679f8ed87599380e2ff","abstract_canon_sha256":"07f16b7fb8e196405a32f2f4da6970621d67153fdb4a083a497d167dde96a857"},"schema_version":"1.0"},"canonical_sha256":"f1fd360efc01ca4da6397fc6898b31213677b656129d3ce09bc69474908b5157","source":{"kind":"arxiv","id":"1510.00940","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.00940","created_at":"2026-05-18T01:27:22Z"},{"alias_kind":"arxiv_version","alias_value":"1510.00940v1","created_at":"2026-05-18T01:27:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.00940","created_at":"2026-05-18T01:27:22Z"},{"alias_kind":"pith_short_12","alias_value":"6H6TMDX4AHFE","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6H6TMDX4AHFE3JRZ","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6H6TMDX4","created_at":"2026-05-18T12:29:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:6H6TMDX4AHFE3JRZP7DITCZREE","target":"record","payload":{"canonical_record":{"source":{"id":"1510.00940","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-10-04T15:08:21Z","cross_cats_sorted":[],"title_canon_sha256":"219a24514bcab13c7408a8ec07c90c768799af683c54e679f8ed87599380e2ff","abstract_canon_sha256":"07f16b7fb8e196405a32f2f4da6970621d67153fdb4a083a497d167dde96a857"},"schema_version":"1.0"},"canonical_sha256":"f1fd360efc01ca4da6397fc6898b31213677b656129d3ce09bc69474908b5157","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:22.295923Z","signature_b64":"SQRQeWnNEjKoU21aerj+kBv0FbJ2ScbDPh7GL4XHOWNyMDiK86DcAg9/2olQYq9I5uljfZaSnPXVG13VShMkDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f1fd360efc01ca4da6397fc6898b31213677b656129d3ce09bc69474908b5157","last_reissued_at":"2026-05-18T01:27:22.295470Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:22.295470Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.00940","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":"2026-05-18T01:27:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9yROpGq7p6zUB+g3KsV8MfmraaCplVuT9BfbnwT0aiZtSTj1TXWhHq1E4sP7sy1eg0EWBVvIiUquAo76vJn6Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T18:14:14.031464Z"},"content_sha256":"ecf43447864f42a681ad932f2a7ce8b54221b4dd06e0c8b8d395baaa4b8da305","schema_version":"1.0","event_id":"sha256:ecf43447864f42a681ad932f2a7ce8b54221b4dd06e0c8b8d395baaa4b8da305"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:6H6TMDX4AHFE3JRZP7DITCZREE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ten years of INTEGRAL observations of the hard X-ray emission from SGR 1900+14","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"2), (2) ISDC Gen\\`eve, (3) INAF/IASF Milano, (4) AIM Irfu/Service d'Astrophysique-Saclay), A. Santangelo (1) ((1) IAAT, D. G\\\"otz (4), L. Ducci (1, S. Mereghetti (3), University of T\\\"ubingen","submitted_at":"2015-10-04T15:08:21Z","abstract_excerpt":"We exploited the high sensitivity of the INTEGRAL IBIS/ISGRI instrument to study the persistent hard X-ray emission of the soft gamma-ray repeater SGR 1900+14, based on ~11.6 Ms of archival data. The 22-150 keV INTEGRAL spectrum can be well fit by a power law with photon index 1.9 +/- 0.3 and flux F_x = (1.11 +/- 0.17)E-11 erg/cm^2/s (20-100 keV). A comparison with the 20-100 keV flux measured in 1997 with BeppoSAX, and possibly associated with SGR 1900+14, shows a luminosity decrease by a factor of ~5. The slope of the power law above 20 keV is consistent within the uncertainties with that of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.00940","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":"2026-05-18T01:27:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wdjWDx3bcruTBc1lZk4x/t7kojrtjfKwO9089tb/ow71i1a2kkcBOcGL3b6eoLcmCwTkWLUy0DJ5o3Y4q7wqDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T18:14:14.031884Z"},"content_sha256":"d7118a73f374616b02b22bf2885a87029873fc812f309ccf26f07b725892fc15","schema_version":"1.0","event_id":"sha256:d7118a73f374616b02b22bf2885a87029873fc812f309ccf26f07b725892fc15"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6H6TMDX4AHFE3JRZP7DITCZREE/bundle.json","state_url":"https://pith.science/pith/6H6TMDX4AHFE3JRZP7DITCZREE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6H6TMDX4AHFE3JRZP7DITCZREE/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":"2026-05-19T18:14:14Z","links":{"resolver":"https://pith.science/pith/6H6TMDX4AHFE3JRZP7DITCZREE","bundle":"https://pith.science/pith/6H6TMDX4AHFE3JRZP7DITCZREE/bundle.json","state":"https://pith.science/pith/6H6TMDX4AHFE3JRZP7DITCZREE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6H6TMDX4AHFE3JRZP7DITCZREE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:6H6TMDX4AHFE3JRZP7DITCZREE","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":"07f16b7fb8e196405a32f2f4da6970621d67153fdb4a083a497d167dde96a857","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-10-04T15:08:21Z","title_canon_sha256":"219a24514bcab13c7408a8ec07c90c768799af683c54e679f8ed87599380e2ff"},"schema_version":"1.0","source":{"id":"1510.00940","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.00940","created_at":"2026-05-18T01:27:22Z"},{"alias_kind":"arxiv_version","alias_value":"1510.00940v1","created_at":"2026-05-18T01:27:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.00940","created_at":"2026-05-18T01:27:22Z"},{"alias_kind":"pith_short_12","alias_value":"6H6TMDX4AHFE","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6H6TMDX4AHFE3JRZ","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6H6TMDX4","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:d7118a73f374616b02b22bf2885a87029873fc812f309ccf26f07b725892fc15","target":"graph","created_at":"2026-05-18T01:27:22Z","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 exploited the high sensitivity of the INTEGRAL IBIS/ISGRI instrument to study the persistent hard X-ray emission of the soft gamma-ray repeater SGR 1900+14, based on ~11.6 Ms of archival data. The 22-150 keV INTEGRAL spectrum can be well fit by a power law with photon index 1.9 +/- 0.3 and flux F_x = (1.11 +/- 0.17)E-11 erg/cm^2/s (20-100 keV). A comparison with the 20-100 keV flux measured in 1997 with BeppoSAX, and possibly associated with SGR 1900+14, shows a luminosity decrease by a factor of ~5. The slope of the power law above 20 keV is consistent within the uncertainties with that of","authors_text":"2), (2) ISDC Gen\\`eve, (3) INAF/IASF Milano, (4) AIM Irfu/Service d'Astrophysique-Saclay), A. Santangelo (1) ((1) IAAT, D. G\\\"otz (4), L. Ducci (1, S. Mereghetti (3), University of T\\\"ubingen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-10-04T15:08:21Z","title":"Ten years of INTEGRAL observations of the hard X-ray emission from SGR 1900+14"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.00940","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:ecf43447864f42a681ad932f2a7ce8b54221b4dd06e0c8b8d395baaa4b8da305","target":"record","created_at":"2026-05-18T01:27:22Z","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":"07f16b7fb8e196405a32f2f4da6970621d67153fdb4a083a497d167dde96a857","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-10-04T15:08:21Z","title_canon_sha256":"219a24514bcab13c7408a8ec07c90c768799af683c54e679f8ed87599380e2ff"},"schema_version":"1.0","source":{"id":"1510.00940","kind":"arxiv","version":1}},"canonical_sha256":"f1fd360efc01ca4da6397fc6898b31213677b656129d3ce09bc69474908b5157","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f1fd360efc01ca4da6397fc6898b31213677b656129d3ce09bc69474908b5157","first_computed_at":"2026-05-18T01:27:22.295470Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:27:22.295470Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SQRQeWnNEjKoU21aerj+kBv0FbJ2ScbDPh7GL4XHOWNyMDiK86DcAg9/2olQYq9I5uljfZaSnPXVG13VShMkDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:27:22.295923Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.00940","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ecf43447864f42a681ad932f2a7ce8b54221b4dd06e0c8b8d395baaa4b8da305","sha256:d7118a73f374616b02b22bf2885a87029873fc812f309ccf26f07b725892fc15"],"state_sha256":"40b985f578e798a9ea3d95d78834d39d2811932abbaab164f10d31aac11d3344"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JwpiZyEOcUV911IfnFlpZPbUV0d2ixSzdjajXPfooOdzPP9TL3O9Q7Zw6D2PRu4dFLu8kmBIMs/6claLyez3Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T18:14:14.034463Z","bundle_sha256":"0a25e031d290adfe6cdb08ccfd7522a5f9d9fb0c2f13d6ba0ba878f2c417e487"}}