{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:OXA5LGBGT4IJALBDNUIMU36J6G","short_pith_number":"pith:OXA5LGBG","canonical_record":{"source":{"id":"2405.19324","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-05-29T17:54:59Z","cross_cats_sorted":[],"title_canon_sha256":"2d0ccb6beec1169c504a185ff4e7dcec25c7db5b03d7253b4aade76140ac9225","abstract_canon_sha256":"80d30f00799ce16677acec84b3f9666565eb50d595fa1bc5b45b81ddb8aae3dd"},"schema_version":"1.0"},"canonical_sha256":"75c1d598269f10902c236d10ca6fc9f1a1d88d43726e05bc78d77e1ae5f0677d","source":{"kind":"arxiv","id":"2405.19324","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.19324","created_at":"2026-07-05T08:24:51Z"},{"alias_kind":"arxiv_version","alias_value":"2405.19324v1","created_at":"2026-07-05T08:24:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.19324","created_at":"2026-07-05T08:24:51Z"},{"alias_kind":"pith_short_12","alias_value":"OXA5LGBGT4IJ","created_at":"2026-07-05T08:24:51Z"},{"alias_kind":"pith_short_16","alias_value":"OXA5LGBGT4IJALBD","created_at":"2026-07-05T08:24:51Z"},{"alias_kind":"pith_short_8","alias_value":"OXA5LGBG","created_at":"2026-07-05T08:24:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:OXA5LGBGT4IJALBDNUIMU36J6G","target":"record","payload":{"canonical_record":{"source":{"id":"2405.19324","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-05-29T17:54:59Z","cross_cats_sorted":[],"title_canon_sha256":"2d0ccb6beec1169c504a185ff4e7dcec25c7db5b03d7253b4aade76140ac9225","abstract_canon_sha256":"80d30f00799ce16677acec84b3f9666565eb50d595fa1bc5b45b81ddb8aae3dd"},"schema_version":"1.0"},"canonical_sha256":"75c1d598269f10902c236d10ca6fc9f1a1d88d43726e05bc78d77e1ae5f0677d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:24:51.059164Z","signature_b64":"ArH40hWsBBhmbzt9x/P/41cN6WsJgRTod0YLZ9IcNnSxFgofjIDM7tsseR46Zk97GgfbIhgmW8gnh+vDpQQVAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"75c1d598269f10902c236d10ca6fc9f1a1d88d43726e05bc78d77e1ae5f0677d","last_reissued_at":"2026-07-05T08:24:51.058536Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:24:51.058536Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2405.19324","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":"2026-07-05T08:24:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qqgd4pvvtWBBSM27Z22BPo+hn8Lgyi0qcNh3DJ6GUG6dD7rnRZPKo1eHc/u0IfBigAxiC6NuL7xPf9uU5ShdDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T04:20:13.529752Z"},"content_sha256":"e24e5f7667bdeb2d1efa204d710231d1dc5d76852febf3d9c28f647dc7a53ea0","schema_version":"1.0","event_id":"sha256:e24e5f7667bdeb2d1efa204d710231d1dc5d76852febf3d9c28f647dc7a53ea0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:OXA5LGBGT4IJALBDNUIMU36J6G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"X-ray and Radio campaign of the Z-source GX 340+0: discovery of X-ray polarization and its implications","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Aman Kaushik, Arvind Balasubramanian, Deepto Chakrabarty, Francesco Carotenuto, Herman L. Marshall, Jeroen Homan, Liang Zhang, Mason Ng, Mayukh Pahari, Sudip Bhattacharyya, Swati Ravi, Thomas D. Russell, Vishal Jadoliya, Yash Bhargava","submitted_at":"2024-05-29T17:54:59Z","abstract_excerpt":"We present the discovery of X-ray polarization from the neutron star low-mass X-ray binary and Z-source, GX~340$+$0, using an Imaging X-ray Polarimetry Explorer (IXPE) observation in March 2024. Along with the IXPE observation, we conducted an extensive X-ray and radio monitoring campaign to ascertain the source properties during and around the IXPE observation. The source was within the horizontal branch throughout the multiwavelength campaign. We measured a significant X-ray polarization in 2--8 keV with polarization degree (PD) = $4.02 \\pm 0.35$% and polarization angle (PA) = $37.6 \\pm 2.5^"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.19324","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2405.19324/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":"2026-07-05T08:24:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n79D0wMVkNqy4O3+OuuTp9CwYnyz1fZEmyk+zJs3yXQ1TG89w9Hc2Jt4nbiK2SeWBEHjG70f//nrvnmYecyYDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T04:20:13.530562Z"},"content_sha256":"c629891fc3bd8fae9302540410e260681c4f216c6ba24e50103535b062bb65e2","schema_version":"1.0","event_id":"sha256:c629891fc3bd8fae9302540410e260681c4f216c6ba24e50103535b062bb65e2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OXA5LGBGT4IJALBDNUIMU36J6G/bundle.json","state_url":"https://pith.science/pith/OXA5LGBGT4IJALBDNUIMU36J6G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OXA5LGBGT4IJALBDNUIMU36J6G/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":"2026-08-22T04:20:13Z","links":{"resolver":"https://pith.science/pith/OXA5LGBGT4IJALBDNUIMU36J6G","bundle":"https://pith.science/pith/OXA5LGBGT4IJALBDNUIMU36J6G/bundle.json","state":"https://pith.science/pith/OXA5LGBGT4IJALBDNUIMU36J6G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OXA5LGBGT4IJALBDNUIMU36J6G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:OXA5LGBGT4IJALBDNUIMU36J6G","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":"80d30f00799ce16677acec84b3f9666565eb50d595fa1bc5b45b81ddb8aae3dd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-05-29T17:54:59Z","title_canon_sha256":"2d0ccb6beec1169c504a185ff4e7dcec25c7db5b03d7253b4aade76140ac9225"},"schema_version":"1.0","source":{"id":"2405.19324","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.19324","created_at":"2026-07-05T08:24:51Z"},{"alias_kind":"arxiv_version","alias_value":"2405.19324v1","created_at":"2026-07-05T08:24:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.19324","created_at":"2026-07-05T08:24:51Z"},{"alias_kind":"pith_short_12","alias_value":"OXA5LGBGT4IJ","created_at":"2026-07-05T08:24:51Z"},{"alias_kind":"pith_short_16","alias_value":"OXA5LGBGT4IJALBD","created_at":"2026-07-05T08:24:51Z"},{"alias_kind":"pith_short_8","alias_value":"OXA5LGBG","created_at":"2026-07-05T08:24:51Z"}],"graph_snapshots":[{"event_id":"sha256:c629891fc3bd8fae9302540410e260681c4f216c6ba24e50103535b062bb65e2","target":"graph","created_at":"2026-07-05T08:24:51Z","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/2405.19324/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the discovery of X-ray polarization from the neutron star low-mass X-ray binary and Z-source, GX~340$+$0, using an Imaging X-ray Polarimetry Explorer (IXPE) observation in March 2024. Along with the IXPE observation, we conducted an extensive X-ray and radio monitoring campaign to ascertain the source properties during and around the IXPE observation. The source was within the horizontal branch throughout the multiwavelength campaign. We measured a significant X-ray polarization in 2--8 keV with polarization degree (PD) = $4.02 \\pm 0.35$% and polarization angle (PA) = $37.6 \\pm 2.5^","authors_text":"Aman Kaushik, Arvind Balasubramanian, Deepto Chakrabarty, Francesco Carotenuto, Herman L. Marshall, Jeroen Homan, Liang Zhang, Mason Ng, Mayukh Pahari, Sudip Bhattacharyya, Swati Ravi, Thomas D. Russell, Vishal Jadoliya, Yash Bhargava","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-05-29T17:54:59Z","title":"X-ray and Radio campaign of the Z-source GX 340+0: discovery of X-ray polarization and its implications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.19324","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:e24e5f7667bdeb2d1efa204d710231d1dc5d76852febf3d9c28f647dc7a53ea0","target":"record","created_at":"2026-07-05T08:24:51Z","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":"80d30f00799ce16677acec84b3f9666565eb50d595fa1bc5b45b81ddb8aae3dd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-05-29T17:54:59Z","title_canon_sha256":"2d0ccb6beec1169c504a185ff4e7dcec25c7db5b03d7253b4aade76140ac9225"},"schema_version":"1.0","source":{"id":"2405.19324","kind":"arxiv","version":1}},"canonical_sha256":"75c1d598269f10902c236d10ca6fc9f1a1d88d43726e05bc78d77e1ae5f0677d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"75c1d598269f10902c236d10ca6fc9f1a1d88d43726e05bc78d77e1ae5f0677d","first_computed_at":"2026-07-05T08:24:51.058536Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:24:51.058536Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ArH40hWsBBhmbzt9x/P/41cN6WsJgRTod0YLZ9IcNnSxFgofjIDM7tsseR46Zk97GgfbIhgmW8gnh+vDpQQVAA==","signature_status":"signed_v1","signed_at":"2026-07-05T08:24:51.059164Z","signed_message":"canonical_sha256_bytes"},"source_id":"2405.19324","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e24e5f7667bdeb2d1efa204d710231d1dc5d76852febf3d9c28f647dc7a53ea0","sha256:c629891fc3bd8fae9302540410e260681c4f216c6ba24e50103535b062bb65e2"],"state_sha256":"27f2861902de5efcc7e5084a977ee71e1813c460f6e3e5775cb7cd6f27e2c5cb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BO9t/bUc+8UtO80voBMtDFY3h7gdHKWfGuvICpIrCu86JkbbTr3zSLKCSM/kRaWc0ipuopo3VJ/54fJH3FLABg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T04:20:13.535570Z","bundle_sha256":"48d3a96d44bc4acb65a585f7be0bb3c9ed13aa9856015508b4f52930e2f6147a"}}