{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:EASB3YMLMX6ZL2534LVAAZFFQJ","short_pith_number":"pith:EASB3YML","canonical_record":{"source":{"id":"2503.21344","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-27T10:22:09Z","cross_cats_sorted":[],"title_canon_sha256":"9435d0d4c35e0fc0d465808dff1d22d33dc17fcecc79c4d3eb2f85794fef06c7","abstract_canon_sha256":"9e7c5b940ac8c9671ac79332d3f173e3babe00b6865d479407c921365475506f"},"schema_version":"1.0"},"canonical_sha256":"20241de18b65fd95ebbbe2ea0064a582767714d848e5ae90fc3043c9d0bd39fe","source":{"kind":"arxiv","id":"2503.21344","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.21344","created_at":"2026-07-05T10:40:24Z"},{"alias_kind":"arxiv_version","alias_value":"2503.21344v1","created_at":"2026-07-05T10:40:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.21344","created_at":"2026-07-05T10:40:24Z"},{"alias_kind":"pith_short_12","alias_value":"EASB3YMLMX6Z","created_at":"2026-07-05T10:40:24Z"},{"alias_kind":"pith_short_16","alias_value":"EASB3YMLMX6ZL253","created_at":"2026-07-05T10:40:24Z"},{"alias_kind":"pith_short_8","alias_value":"EASB3YML","created_at":"2026-07-05T10:40:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:EASB3YMLMX6ZL2534LVAAZFFQJ","target":"record","payload":{"canonical_record":{"source":{"id":"2503.21344","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-27T10:22:09Z","cross_cats_sorted":[],"title_canon_sha256":"9435d0d4c35e0fc0d465808dff1d22d33dc17fcecc79c4d3eb2f85794fef06c7","abstract_canon_sha256":"9e7c5b940ac8c9671ac79332d3f173e3babe00b6865d479407c921365475506f"},"schema_version":"1.0"},"canonical_sha256":"20241de18b65fd95ebbbe2ea0064a582767714d848e5ae90fc3043c9d0bd39fe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:40:24.011208Z","signature_b64":"2OhVSwcYsXh5gB0lZaSBJa+tc7a68UQEAEXzLH4g4NRIHyNonI+pcwbgGEwLKwW75pmSF8wipAQD01rSBXs7Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"20241de18b65fd95ebbbe2ea0064a582767714d848e5ae90fc3043c9d0bd39fe","last_reissued_at":"2026-07-05T10:40:24.010741Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:40:24.010741Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.21344","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":"2026-07-05T10:40:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mg8ImOrbrgzqcJplg68gzCIScnwPCCjhNAq+swZDvkZ7w9GjuGqVuyF4HHW1t+nxQv6ogCGevNo8nmUm5Yl/Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T06:07:03.308322Z"},"content_sha256":"1b85abdb2f3dd826291891981824733db749573224b2d7bcdc1d2c3c6982fbd7","schema_version":"1.0","event_id":"sha256:1b85abdb2f3dd826291891981824733db749573224b2d7bcdc1d2c3c6982fbd7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:EASB3YMLMX6ZL2534LVAAZFFQJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"X-ray Polarization of the High-Synchrotron-Peak BL Lacertae Object 1ES 1959+650 during Intermediate and High X-ray Flux States","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Abel Lawrence Peirson, Ajay Ratheesh, Alan P. Marscher, Alberto Manfreda, Alessandra De Rosa, Alessandro Brez, Alessandro Di Marco, Alessandro Papitto, Alessio Trois, Alexander Kraus, Allyn F. Tennant, Andrea Marinucci, Andrea Possenti, Brian D. Ramsey, Carmelo Sgr\\'o, Chiara Oppedisano, Chien-Ting Chen, C.-Y. Ng, Dawoon E. Kim, Douglas A. Swartz, Elisabetta Cavazzuti, Emmanouil Angelakis, Enrico Costa, Ettore Del Monte, Fabian Kislat, Fabio La Monaca, Fabio Muleri, Fabrizio Tavecchio, Fei Xie, Fiamma Capitanio, Francesco Massaro, Francesco Tombesi, Fr\\'ed\\'eric Marin, George G. Pavlov, Giacomo Bonnoli, Giorgio Matt, Gloria Spandre, Henric Krawczynski, Herman L. Marshall, Immacolata Donnarumma, Ioannis Liodakis, Iv\\'an Agudo, Jacco Vink, Javier A. Garcia, Jeffery J. Kolodziejczak, Jeremy Heyl, John Rankin, Juri Poutanen, Kinwah Wu, Laura Di Gesu, Luca Baldini, Luca Latronico, Lucio Angelo Antonelli, Luigi Pacciani, Manel Errando, Martin C. Weisskopf, Matteo Bachetti, Matteo Perri, Maura Pilia, Melissa Pesce-Rollins, Michal Dov\\v{c}iak, Michela Negro, Niccol\\'o Bucciantini, Niccol\\'o Di Lalla, Nicholas E. Thomas, Nicola Omodei, Oliver J. Roberts, Paolo Soffitta, Patrick Slane, Philip Kaaret, Pierre-Olivier Petrucci, Pouya M. Kouch, Raffaella Bonino, Riccardo Ferrazzoli, Riccardo Middei, Roberto Taverna, Roberto Turolla, Roger W. Romani, Ronaldo Bellazzini, Sergey S. Tsygankov, Sergio Fabiani, Shuichi Gunji, Silvia Zane, Simone Castellano, Simone Maldera, Simonetta Puccetti, Stefano Bianchi, Stefano Ciprini, Stephen D. Bongiorno, Stephen L. O'Dell, Steven R. Ehlert, Svetlana G. Jorstad, Teruaki Enoto, Toru Tamagawa, Tsunefumi Mizuno, Victor Doroshenko, Vladimir Karas, Wataru Iwakiri, Wayne H. Baumgartner, Yuri Evangelista","submitted_at":"2025-03-27T10:22:09Z","abstract_excerpt":"We report the Imaging X-ray Polarimetry Explorer (IXPE) polarimetric and simultaneous multiwavelength observations of the high-energy-peaked BL Lacertae (HBL) object 1ES 1959+650, performed in 2022 October and 2023 August. In 2022 October IXPE measured an average polarization degree $\\Pi_{\\rm X}=9.4\\;\\!\\%\\pm 1.6\\;\\!\\%$ and an electric-vector position angle $\\psi_{\\rm X}=53^{\\circ}\\pm 5^{\\circ}$. The polarized X-ray emission can be decomposed into a constant component, plus a rotating component, with rotation velocity $\\omega_{\\rm EVPA}=(-117\\;\\!\\pm\\;\\!12)$ ${\\rm deg}\\;\\!{\\rm d}^{-1}$. In 2023 "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.21344","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/2503.21344/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":"2026-07-05T10:40:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aWOyALlszSX6d4OuozbzqT2plrSI9k/7Mp4QTVTJ2h79Ozix6MCz70sU99mVTJ6+D3gSiUNGif3O5aHxDRFVAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T06:07:03.309263Z"},"content_sha256":"694b7d5ef649c1248336d2a7c91590ac4d3df734c1ac0b2e0f2ed944f87d3d4a","schema_version":"1.0","event_id":"sha256:694b7d5ef649c1248336d2a7c91590ac4d3df734c1ac0b2e0f2ed944f87d3d4a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EASB3YMLMX6ZL2534LVAAZFFQJ/bundle.json","state_url":"https://pith.science/pith/EASB3YMLMX6ZL2534LVAAZFFQJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EASB3YMLMX6ZL2534LVAAZFFQJ/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":"2026-08-02T06:07:03Z","links":{"resolver":"https://pith.science/pith/EASB3YMLMX6ZL2534LVAAZFFQJ","bundle":"https://pith.science/pith/EASB3YMLMX6ZL2534LVAAZFFQJ/bundle.json","state":"https://pith.science/pith/EASB3YMLMX6ZL2534LVAAZFFQJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EASB3YMLMX6ZL2534LVAAZFFQJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:EASB3YMLMX6ZL2534LVAAZFFQJ","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":"9e7c5b940ac8c9671ac79332d3f173e3babe00b6865d479407c921365475506f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-27T10:22:09Z","title_canon_sha256":"9435d0d4c35e0fc0d465808dff1d22d33dc17fcecc79c4d3eb2f85794fef06c7"},"schema_version":"1.0","source":{"id":"2503.21344","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.21344","created_at":"2026-07-05T10:40:24Z"},{"alias_kind":"arxiv_version","alias_value":"2503.21344v1","created_at":"2026-07-05T10:40:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.21344","created_at":"2026-07-05T10:40:24Z"},{"alias_kind":"pith_short_12","alias_value":"EASB3YMLMX6Z","created_at":"2026-07-05T10:40:24Z"},{"alias_kind":"pith_short_16","alias_value":"EASB3YMLMX6ZL253","created_at":"2026-07-05T10:40:24Z"},{"alias_kind":"pith_short_8","alias_value":"EASB3YML","created_at":"2026-07-05T10:40:24Z"}],"graph_snapshots":[{"event_id":"sha256:694b7d5ef649c1248336d2a7c91590ac4d3df734c1ac0b2e0f2ed944f87d3d4a","target":"graph","created_at":"2026-07-05T10:40:24Z","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/2503.21344/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the Imaging X-ray Polarimetry Explorer (IXPE) polarimetric and simultaneous multiwavelength observations of the high-energy-peaked BL Lacertae (HBL) object 1ES 1959+650, performed in 2022 October and 2023 August. In 2022 October IXPE measured an average polarization degree $\\Pi_{\\rm X}=9.4\\;\\!\\%\\pm 1.6\\;\\!\\%$ and an electric-vector position angle $\\psi_{\\rm X}=53^{\\circ}\\pm 5^{\\circ}$. The polarized X-ray emission can be decomposed into a constant component, plus a rotating component, with rotation velocity $\\omega_{\\rm EVPA}=(-117\\;\\!\\pm\\;\\!12)$ ${\\rm deg}\\;\\!{\\rm d}^{-1}$. In 2023 ","authors_text":"Abel Lawrence Peirson, Ajay Ratheesh, Alan P. Marscher, Alberto Manfreda, Alessandra De Rosa, Alessandro Brez, Alessandro Di Marco, Alessandro Papitto, Alessio Trois, Alexander Kraus, Allyn F. Tennant, Andrea Marinucci, Andrea Possenti, Brian D. Ramsey, Carmelo Sgr\\'o, Chiara Oppedisano, Chien-Ting Chen, C.-Y. Ng, Dawoon E. Kim, Douglas A. Swartz, Elisabetta Cavazzuti, Emmanouil Angelakis, Enrico Costa, Ettore Del Monte, Fabian Kislat, Fabio La Monaca, Fabio Muleri, Fabrizio Tavecchio, Fei Xie, Fiamma Capitanio, Francesco Massaro, Francesco Tombesi, Fr\\'ed\\'eric Marin, George G. Pavlov, Giacomo Bonnoli, Giorgio Matt, Gloria Spandre, Henric Krawczynski, Herman L. Marshall, Immacolata Donnarumma, Ioannis Liodakis, Iv\\'an Agudo, Jacco Vink, Javier A. Garcia, Jeffery J. Kolodziejczak, Jeremy Heyl, John Rankin, Juri Poutanen, Kinwah Wu, Laura Di Gesu, Luca Baldini, Luca Latronico, Lucio Angelo Antonelli, Luigi Pacciani, Manel Errando, Martin C. Weisskopf, Matteo Bachetti, Matteo Perri, Maura Pilia, Melissa Pesce-Rollins, Michal Dov\\v{c}iak, Michela Negro, Niccol\\'o Bucciantini, Niccol\\'o Di Lalla, Nicholas E. Thomas, Nicola Omodei, Oliver J. Roberts, Paolo Soffitta, Patrick Slane, Philip Kaaret, Pierre-Olivier Petrucci, Pouya M. Kouch, Raffaella Bonino, Riccardo Ferrazzoli, Riccardo Middei, Roberto Taverna, Roberto Turolla, Roger W. Romani, Ronaldo Bellazzini, Sergey S. Tsygankov, Sergio Fabiani, Shuichi Gunji, Silvia Zane, Simone Castellano, Simone Maldera, Simonetta Puccetti, Stefano Bianchi, Stefano Ciprini, Stephen D. Bongiorno, Stephen L. O'Dell, Steven R. Ehlert, Svetlana G. Jorstad, Teruaki Enoto, Toru Tamagawa, Tsunefumi Mizuno, Victor Doroshenko, Vladimir Karas, Wataru Iwakiri, Wayne H. Baumgartner, Yuri Evangelista","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-27T10:22:09Z","title":"X-ray Polarization of the High-Synchrotron-Peak BL Lacertae Object 1ES 1959+650 during Intermediate and High X-ray Flux States"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.21344","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":"sha256:1b85abdb2f3dd826291891981824733db749573224b2d7bcdc1d2c3c6982fbd7","target":"record","created_at":"2026-07-05T10:40:24Z","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":"9e7c5b940ac8c9671ac79332d3f173e3babe00b6865d479407c921365475506f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-03-27T10:22:09Z","title_canon_sha256":"9435d0d4c35e0fc0d465808dff1d22d33dc17fcecc79c4d3eb2f85794fef06c7"},"schema_version":"1.0","source":{"id":"2503.21344","kind":"arxiv","version":1}},"canonical_sha256":"20241de18b65fd95ebbbe2ea0064a582767714d848e5ae90fc3043c9d0bd39fe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"20241de18b65fd95ebbbe2ea0064a582767714d848e5ae90fc3043c9d0bd39fe","first_computed_at":"2026-07-05T10:40:24.010741Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:40:24.010741Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2OhVSwcYsXh5gB0lZaSBJa+tc7a68UQEAEXzLH4g4NRIHyNonI+pcwbgGEwLKwW75pmSF8wipAQD01rSBXs7Ag==","signature_status":"signed_v1","signed_at":"2026-07-05T10:40:24.011208Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.21344","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1b85abdb2f3dd826291891981824733db749573224b2d7bcdc1d2c3c6982fbd7","sha256:694b7d5ef649c1248336d2a7c91590ac4d3df734c1ac0b2e0f2ed944f87d3d4a"],"state_sha256":"04fcf586383afaa83b0a490f9863573599090ecbaaef6bfc314b5d164d2137bc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w40bUDrwrx1ywVymhvQPxeGmpbeU99gK84w4SZEN8kIQkREwztrqJYk01xpzOf1djpsGEy1yZN2dIdROuYyECg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T06:07:03.321124Z","bundle_sha256":"4e87062267da07b283d898507b92985c980593d6fc6f61c976f47d2b86422dfe"}}