{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:5J2NMW54PXF3HAW2OTBL2QUCAG","short_pith_number":"pith:5J2NMW54","canonical_record":{"source":{"id":"2503.22665","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-28T17:53:37Z","cross_cats_sorted":[],"title_canon_sha256":"b2b0ff6520813f8e850a6692896f169313a9f3e7a5391648a4afae8bebbb741d","abstract_canon_sha256":"945a7da5c3dd3570da1128a907e58f2ae7edae323b43da587cd62bb09051f7dc"},"schema_version":"1.0"},"canonical_sha256":"ea74d65bbc7dcbb382da74c2bd428201ad40a6f7c4ebb985e312173fed96c49e","source":{"kind":"arxiv","id":"2503.22665","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.22665","created_at":"2026-07-05T11:08:18Z"},{"alias_kind":"arxiv_version","alias_value":"2503.22665v2","created_at":"2026-07-05T11:08:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.22665","created_at":"2026-07-05T11:08:18Z"},{"alias_kind":"pith_short_12","alias_value":"5J2NMW54PXF3","created_at":"2026-07-05T11:08:18Z"},{"alias_kind":"pith_short_16","alias_value":"5J2NMW54PXF3HAW2","created_at":"2026-07-05T11:08:18Z"},{"alias_kind":"pith_short_8","alias_value":"5J2NMW54","created_at":"2026-07-05T11:08:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:5J2NMW54PXF3HAW2OTBL2QUCAG","target":"record","payload":{"canonical_record":{"source":{"id":"2503.22665","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-28T17:53:37Z","cross_cats_sorted":[],"title_canon_sha256":"b2b0ff6520813f8e850a6692896f169313a9f3e7a5391648a4afae8bebbb741d","abstract_canon_sha256":"945a7da5c3dd3570da1128a907e58f2ae7edae323b43da587cd62bb09051f7dc"},"schema_version":"1.0"},"canonical_sha256":"ea74d65bbc7dcbb382da74c2bd428201ad40a6f7c4ebb985e312173fed96c49e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:08:18.678866Z","signature_b64":"inun5N7RQ9s09ENgBUvBk1sqkljeiGA37WY7aeynxt9KBYA4pMK4rZ7k21Zs0jqA6D02prmUvZCWykPpvkFVBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ea74d65bbc7dcbb382da74c2bd428201ad40a6f7c4ebb985e312173fed96c49e","last_reissued_at":"2026-07-05T11:08:18.678197Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:08:18.678197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.22665","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:08:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HTEm1LC4eSfoIsEc8wN550ERnHsHBdtw05oMKdgxUTsPYXfusil+utICT7B/lu4ACZ7f/wPFiMXwykklt/FzCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T19:33:53.634346Z"},"content_sha256":"cce369214a7552c3d98a0f877e2b2410fb9461e1001ac791baac46839df56e69","schema_version":"1.0","event_id":"sha256:cce369214a7552c3d98a0f877e2b2410fb9461e1001ac791baac46839df56e69"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:5J2NMW54PXF3HAW2OTBL2QUCAG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The very high X-ray polarisation of accreting black hole IGRJ17091-3624 in the hard state","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Adam Ingram, Alexandra Veledina, Barbara de Marco, Chulsoo Kang, Edward Nathan, Elias Kammoun, Fiamma Capitanio, Francesco Tombesi, Giorgio Matt, Guglielmo Mastroserio, James F. Steiner, Javier A. Garc\\'ia, Juri Poutanen, Lorenzo Marra, Maitrayee Gupta, Maria C. Baglio, Mar\\'ia D\\'iaz Trigo, Maxime Parra, Megumi Shidatsu, Melania Del Santo, Melissa Ewing, Michal Dov\\v{c}iak, Oluwashina Adegoke, Pierre-Olivier Petrucci, Poshak Gandhi, Riley Connors, Stefano Bianchi, Thomas D. Russell, Vladislav Loktev","submitted_at":"2025-03-28T17:53:37Z","abstract_excerpt":"We report the first detection of the X-ray polarisation of the transient black hole X-ray binary IGRJ17091-3624 taken with the Imaging X-ray polarimetry Explorer (IXPE) in March 2025, and present the results of an X-ray spectro-polarimetric analysis. The polarisation was measured in the 2--8 keV band with 5.2$\\sigma$ statistical confidence. We report a polarisation degree (PD) of $9.1\\pm1.6$ per cent and a polarisation angle of $83^{\\circ} \\pm 5^{\\circ}$ (errors are $1\\sigma$ confidence). There is a hint of a positive correlation of PD with energy that is not statistically significant. We repo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.22665","kind":"arxiv","version":2},"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/2503.22665/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":"2026-07-05T11:08:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wyEQYvGVB74G6Zy89Cz4/sT8kUIc4cvvkPfeX+bpqHDRNrM5/eo0QmiZH7QgWC0VgwXEUTkH867Uy4d8//MwBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T19:33:53.634865Z"},"content_sha256":"f570bffee84ce0219c147c1809a882bdd25a80904d2b3274c976562a8d10549e","schema_version":"1.0","event_id":"sha256:f570bffee84ce0219c147c1809a882bdd25a80904d2b3274c976562a8d10549e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5J2NMW54PXF3HAW2OTBL2QUCAG/bundle.json","state_url":"https://pith.science/pith/5J2NMW54PXF3HAW2OTBL2QUCAG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5J2NMW54PXF3HAW2OTBL2QUCAG/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":"2026-08-10T19:33:53Z","links":{"resolver":"https://pith.science/pith/5J2NMW54PXF3HAW2OTBL2QUCAG","bundle":"https://pith.science/pith/5J2NMW54PXF3HAW2OTBL2QUCAG/bundle.json","state":"https://pith.science/pith/5J2NMW54PXF3HAW2OTBL2QUCAG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5J2NMW54PXF3HAW2OTBL2QUCAG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:5J2NMW54PXF3HAW2OTBL2QUCAG","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":"945a7da5c3dd3570da1128a907e58f2ae7edae323b43da587cd62bb09051f7dc","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-28T17:53:37Z","title_canon_sha256":"b2b0ff6520813f8e850a6692896f169313a9f3e7a5391648a4afae8bebbb741d"},"schema_version":"1.0","source":{"id":"2503.22665","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.22665","created_at":"2026-07-05T11:08:18Z"},{"alias_kind":"arxiv_version","alias_value":"2503.22665v2","created_at":"2026-07-05T11:08:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.22665","created_at":"2026-07-05T11:08:18Z"},{"alias_kind":"pith_short_12","alias_value":"5J2NMW54PXF3","created_at":"2026-07-05T11:08:18Z"},{"alias_kind":"pith_short_16","alias_value":"5J2NMW54PXF3HAW2","created_at":"2026-07-05T11:08:18Z"},{"alias_kind":"pith_short_8","alias_value":"5J2NMW54","created_at":"2026-07-05T11:08:18Z"}],"graph_snapshots":[{"event_id":"sha256:f570bffee84ce0219c147c1809a882bdd25a80904d2b3274c976562a8d10549e","target":"graph","created_at":"2026-07-05T11:08:18Z","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/2503.22665/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the first detection of the X-ray polarisation of the transient black hole X-ray binary IGRJ17091-3624 taken with the Imaging X-ray polarimetry Explorer (IXPE) in March 2025, and present the results of an X-ray spectro-polarimetric analysis. The polarisation was measured in the 2--8 keV band with 5.2$\\sigma$ statistical confidence. We report a polarisation degree (PD) of $9.1\\pm1.6$ per cent and a polarisation angle of $83^{\\circ} \\pm 5^{\\circ}$ (errors are $1\\sigma$ confidence). There is a hint of a positive correlation of PD with energy that is not statistically significant. We repo","authors_text":"Adam Ingram, Alexandra Veledina, Barbara de Marco, Chulsoo Kang, Edward Nathan, Elias Kammoun, Fiamma Capitanio, Francesco Tombesi, Giorgio Matt, Guglielmo Mastroserio, James F. Steiner, Javier A. Garc\\'ia, Juri Poutanen, Lorenzo Marra, Maitrayee Gupta, Maria C. Baglio, Mar\\'ia D\\'iaz Trigo, Maxime Parra, Megumi Shidatsu, Melania Del Santo, Melissa Ewing, Michal Dov\\v{c}iak, Oluwashina Adegoke, Pierre-Olivier Petrucci, Poshak Gandhi, Riley Connors, Stefano Bianchi, Thomas D. Russell, Vladislav Loktev","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-28T17:53:37Z","title":"The very high X-ray polarisation of accreting black hole IGRJ17091-3624 in the hard state"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.22665","kind":"arxiv","version":2},"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:cce369214a7552c3d98a0f877e2b2410fb9461e1001ac791baac46839df56e69","target":"record","created_at":"2026-07-05T11:08:18Z","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":"945a7da5c3dd3570da1128a907e58f2ae7edae323b43da587cd62bb09051f7dc","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-28T17:53:37Z","title_canon_sha256":"b2b0ff6520813f8e850a6692896f169313a9f3e7a5391648a4afae8bebbb741d"},"schema_version":"1.0","source":{"id":"2503.22665","kind":"arxiv","version":2}},"canonical_sha256":"ea74d65bbc7dcbb382da74c2bd428201ad40a6f7c4ebb985e312173fed96c49e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ea74d65bbc7dcbb382da74c2bd428201ad40a6f7c4ebb985e312173fed96c49e","first_computed_at":"2026-07-05T11:08:18.678197Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:08:18.678197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"inun5N7RQ9s09ENgBUvBk1sqkljeiGA37WY7aeynxt9KBYA4pMK4rZ7k21Zs0jqA6D02prmUvZCWykPpvkFVBA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:08:18.678866Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.22665","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cce369214a7552c3d98a0f877e2b2410fb9461e1001ac791baac46839df56e69","sha256:f570bffee84ce0219c147c1809a882bdd25a80904d2b3274c976562a8d10549e"],"state_sha256":"99a1f01b639ac5d1cdc44ced9f086f3be353235d70d8ccaf57c3a6c0a718f4ff"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yoDOQ0pxogXRruaJ1sgbwLI4KkV2druoTrGnUQRHOtCc2rhvBFWRbKKNWH2hQzKzWfEDAVu7OKY8OOXgC5/FDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T19:33:53.639342Z","bundle_sha256":"d0cd6b85055869bdc724e30c4b97708dc6a1008a44e38f1bad5b14dd141af343"}}