{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:WNXPPNPRMPVV3ME4HJO42NNP6A","short_pith_number":"pith:WNXPPNPR","canonical_record":{"source":{"id":"2501.12238","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-01-21T15:59:19Z","cross_cats_sorted":[],"title_canon_sha256":"f446eacc6fe4690f2c92218aeb11e4688abefad56b0181b55369ec52d0bf860f","abstract_canon_sha256":"218ddda775452ef516edd1fd06916299955c0b78fea884e173d5c1f0215015f1"},"schema_version":"1.0"},"canonical_sha256":"b36ef7b5f163eb5db09c3a5dcd35aff01b1b30bd956abd462fd62855de5ccff8","source":{"kind":"arxiv","id":"2501.12238","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.12238","created_at":"2026-07-05T10:19:36Z"},{"alias_kind":"arxiv_version","alias_value":"2501.12238v1","created_at":"2026-07-05T10:19:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.12238","created_at":"2026-07-05T10:19:36Z"},{"alias_kind":"pith_short_12","alias_value":"WNXPPNPRMPVV","created_at":"2026-07-05T10:19:36Z"},{"alias_kind":"pith_short_16","alias_value":"WNXPPNPRMPVV3ME4","created_at":"2026-07-05T10:19:36Z"},{"alias_kind":"pith_short_8","alias_value":"WNXPPNPR","created_at":"2026-07-05T10:19:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:WNXPPNPRMPVV3ME4HJO42NNP6A","target":"record","payload":{"canonical_record":{"source":{"id":"2501.12238","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-01-21T15:59:19Z","cross_cats_sorted":[],"title_canon_sha256":"f446eacc6fe4690f2c92218aeb11e4688abefad56b0181b55369ec52d0bf860f","abstract_canon_sha256":"218ddda775452ef516edd1fd06916299955c0b78fea884e173d5c1f0215015f1"},"schema_version":"1.0"},"canonical_sha256":"b36ef7b5f163eb5db09c3a5dcd35aff01b1b30bd956abd462fd62855de5ccff8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:19:36.847126Z","signature_b64":"kj9djd4bvkHAhl/vGwBUBevnZXVOwAsI1xHSz60GBg5P9BGkN17aQCdBFcpZeAaX5weDAogS1Yhj8WUosyWcAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b36ef7b5f163eb5db09c3a5dcd35aff01b1b30bd956abd462fd62855de5ccff8","last_reissued_at":"2026-07-05T10:19:36.846716Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:19:36.846716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2501.12238","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":"2026-07-05T10:19:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FSwsfLmE0qDzrWNhe33yfXH8ZU0mCv8wPuHbgqOmupMpY7hdB3vMjoZgDOe+RaxFSji2TF9Aw2YJ7zE+VtTbDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:09:53.709923Z"},"content_sha256":"87047b8137a74e967e60f191bf7f67f80ca72d2fc190914d50fa7c0b41075f09","schema_version":"1.0","event_id":"sha256:87047b8137a74e967e60f191bf7f67f80ca72d2fc190914d50fa7c0b41075f09"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:WNXPPNPRMPVV3ME4HJO42NNP6A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detection of very-high-energy gamma-ray emission from Eta Carinae during its 2020 periastron passage","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A.A. Zdziarski, A. Brown, A. Chen, A. Djannati-Ata\\\"i, A. Dmytriiev, A. Jardin-Blicq, A. Lemi\\`ere, A. Luashvili, A. Marcowith, A. Mehta, A. Mitchell, A. Quirrenbach, A. Reimer, A. Santangelo, A. Wierzcholska, A. Zech, B. Bruno, B. He{\\ss}, B. Kh\\'elifi, B. Reville, B. Rudak, C. Boisson, C. Burger-Scheidlin, C. Esca\\~nuela Nieves, C. Steppa, C. van Eldik, C. Venter, D. Berge, D. Horns, D. Kostunin, D. Malyshev, E. de Ona Wilhelmi, E. Moulin, E. Ruiz-Velasco, F. Aharonian, F. Ait Benkhali, F. Bradascio, F. Brun, F. Jankowsky, F. Rieger, F. Sch\\\"ussler, F. Werner, G. Cotter, G. Fontaine, G. Grolleron, G. Mart\\'i-Devesa, G. P\\\"uhlhofer, G. Rowell, H. Ashkar, H.E.S.S. collaboration, H.M. Schutte, H. Ren, H. Salzmann, I. Jung-Richardt, J.A. Hinton, J. Aschersleben, J. Bolmont, J. Celic, J. Chibueze, J. Damascene Mbarubucyeye, J. de Assis Scarpin, J. Devin, J. Djuvsland, J.F. Glicenstein, J. Mackey, J. Niemiec, J.N.S. Shapopi, J.-P. Ernenwein, J.-P. Lenain, J. Sch\\\"afer, K. Bernl\\\"ohr, K. Egberts, K. Feijen, K. Katarzy\\'nski, K. Kosack, K. Sabri, K. Streil, L. Haerer, L. Mohrmann, L. Olivera-Nieto, {\\L}. Stawarz, M. B\\\"ottcher, M. Cerruti, M. de Bony de Lavergne, M. de Naurois, M. Filipovic, M.-H. Grondin, M. Holler, M. Jamrozy, M. Lemoine-Goumard, M.O. Moghadam, M. Ostrowski, M. Panter, M. Regeard, M. Sasaki, M. Tluczykont, M. Tsirou, M. Vecchi, M. Zacharias, N. Tsuji, Nu. Komin, N. \\.Zywucka, O. Chibueze, O. Reimer, Q. Remy, R. Batzofin, R. Brose, R.D. Parsons, R.G. Lang, R. Khatoon, R. Marx, R. Moderski, R. Steenkamp, R. Terrier, R. White, S. Casanova, S. Chandra, S. Einecke, S. Funk, S. Gabici, S.J. Wagner, S. Le Stum, S. Ohm, S. Panny, S. Ravikularaman, S. Spencer, S. Steinmassl, T. Chand, T. Collins, T.L. Holch, T. Tanaka, T. Wach, U. Pensec, V. Barbosa Martins, V. Marandon, V. Sahakian, W. Hofmann, W. Klu\\'zniak, Y. Becherini, Zhiqiu Huang","submitted_at":"2025-01-21T15:59:19Z","abstract_excerpt":"The colliding-wind binary system $\\eta$ Carinae has been identified as a source of high-energy (HE, below $\\sim$100\\,GeV) and very-high-energy (VHE, above $\\sim$100\\,GeV) gamma rays in the last decade, making it unique among these systems. With its eccentric 5.5-year-long orbit, the periastron passage, during which the stars are separated by only $1-2$\\,au, is an intriguing time interval to probe particle acceleration processes within the system. In this work, we report on an extensive VHE observation campaign that for the first time covers the full periastron passage carried out with the High"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.12238","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/2501.12238/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":"2026-07-05T10:19:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u+++mbISHhC9IgJwFBEcHBBiga1kM6YjUVMjRlIsdmSJKfkuOKm4yBst1iw9W1ssyGorLtAbcr9BnJad5pT9Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:09:53.710361Z"},"content_sha256":"6cef8788f4d4be92d2819a77c205877f7ade730f67e250605e728255d09f32d9","schema_version":"1.0","event_id":"sha256:6cef8788f4d4be92d2819a77c205877f7ade730f67e250605e728255d09f32d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WNXPPNPRMPVV3ME4HJO42NNP6A/bundle.json","state_url":"https://pith.science/pith/WNXPPNPRMPVV3ME4HJO42NNP6A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WNXPPNPRMPVV3ME4HJO42NNP6A/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":"2026-07-07T11:09:53Z","links":{"resolver":"https://pith.science/pith/WNXPPNPRMPVV3ME4HJO42NNP6A","bundle":"https://pith.science/pith/WNXPPNPRMPVV3ME4HJO42NNP6A/bundle.json","state":"https://pith.science/pith/WNXPPNPRMPVV3ME4HJO42NNP6A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WNXPPNPRMPVV3ME4HJO42NNP6A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:WNXPPNPRMPVV3ME4HJO42NNP6A","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":"218ddda775452ef516edd1fd06916299955c0b78fea884e173d5c1f0215015f1","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-01-21T15:59:19Z","title_canon_sha256":"f446eacc6fe4690f2c92218aeb11e4688abefad56b0181b55369ec52d0bf860f"},"schema_version":"1.0","source":{"id":"2501.12238","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.12238","created_at":"2026-07-05T10:19:36Z"},{"alias_kind":"arxiv_version","alias_value":"2501.12238v1","created_at":"2026-07-05T10:19:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.12238","created_at":"2026-07-05T10:19:36Z"},{"alias_kind":"pith_short_12","alias_value":"WNXPPNPRMPVV","created_at":"2026-07-05T10:19:36Z"},{"alias_kind":"pith_short_16","alias_value":"WNXPPNPRMPVV3ME4","created_at":"2026-07-05T10:19:36Z"},{"alias_kind":"pith_short_8","alias_value":"WNXPPNPR","created_at":"2026-07-05T10:19:36Z"}],"graph_snapshots":[{"event_id":"sha256:6cef8788f4d4be92d2819a77c205877f7ade730f67e250605e728255d09f32d9","target":"graph","created_at":"2026-07-05T10:19:36Z","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/2501.12238/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The colliding-wind binary system $\\eta$ Carinae has been identified as a source of high-energy (HE, below $\\sim$100\\,GeV) and very-high-energy (VHE, above $\\sim$100\\,GeV) gamma rays in the last decade, making it unique among these systems. With its eccentric 5.5-year-long orbit, the periastron passage, during which the stars are separated by only $1-2$\\,au, is an intriguing time interval to probe particle acceleration processes within the system. In this work, we report on an extensive VHE observation campaign that for the first time covers the full periastron passage carried out with the High","authors_text":"A.A. Zdziarski, A. Brown, A. Chen, A. Djannati-Ata\\\"i, A. Dmytriiev, A. Jardin-Blicq, A. Lemi\\`ere, A. Luashvili, A. Marcowith, A. Mehta, A. Mitchell, A. Quirrenbach, A. Reimer, A. Santangelo, A. Wierzcholska, A. Zech, B. Bruno, B. He{\\ss}, B. Kh\\'elifi, B. Reville, B. Rudak, C. Boisson, C. Burger-Scheidlin, C. Esca\\~nuela Nieves, C. Steppa, C. van Eldik, C. Venter, D. Berge, D. Horns, D. Kostunin, D. Malyshev, E. de Ona Wilhelmi, E. Moulin, E. Ruiz-Velasco, F. Aharonian, F. Ait Benkhali, F. Bradascio, F. Brun, F. Jankowsky, F. Rieger, F. Sch\\\"ussler, F. Werner, G. Cotter, G. Fontaine, G. Grolleron, G. Mart\\'i-Devesa, G. P\\\"uhlhofer, G. Rowell, H. Ashkar, H.E.S.S. collaboration, H.M. Schutte, H. Ren, H. Salzmann, I. Jung-Richardt, J.A. Hinton, J. Aschersleben, J. Bolmont, J. Celic, J. Chibueze, J. Damascene Mbarubucyeye, J. de Assis Scarpin, J. Devin, J. Djuvsland, J.F. Glicenstein, J. Mackey, J. Niemiec, J.N.S. Shapopi, J.-P. Ernenwein, J.-P. Lenain, J. Sch\\\"afer, K. Bernl\\\"ohr, K. Egberts, K. Feijen, K. Katarzy\\'nski, K. Kosack, K. Sabri, K. Streil, L. Haerer, L. Mohrmann, L. Olivera-Nieto, {\\L}. Stawarz, M. B\\\"ottcher, M. Cerruti, M. de Bony de Lavergne, M. de Naurois, M. Filipovic, M.-H. Grondin, M. Holler, M. Jamrozy, M. Lemoine-Goumard, M.O. Moghadam, M. Ostrowski, M. Panter, M. Regeard, M. Sasaki, M. Tluczykont, M. Tsirou, M. Vecchi, M. Zacharias, N. Tsuji, Nu. Komin, N. \\.Zywucka, O. Chibueze, O. Reimer, Q. Remy, R. Batzofin, R. Brose, R.D. Parsons, R.G. Lang, R. Khatoon, R. Marx, R. Moderski, R. Steenkamp, R. Terrier, R. White, S. Casanova, S. Chandra, S. Einecke, S. Funk, S. Gabici, S.J. Wagner, S. Le Stum, S. Ohm, S. Panny, S. Ravikularaman, S. Spencer, S. Steinmassl, T. Chand, T. Collins, T.L. Holch, T. Tanaka, T. Wach, U. Pensec, V. Barbosa Martins, V. Marandon, V. Sahakian, W. Hofmann, W. Klu\\'zniak, Y. Becherini, Zhiqiu Huang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-01-21T15:59:19Z","title":"Detection of very-high-energy gamma-ray emission from Eta Carinae during its 2020 periastron passage"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.12238","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":"sha256:87047b8137a74e967e60f191bf7f67f80ca72d2fc190914d50fa7c0b41075f09","target":"record","created_at":"2026-07-05T10:19:36Z","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":"218ddda775452ef516edd1fd06916299955c0b78fea884e173d5c1f0215015f1","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-01-21T15:59:19Z","title_canon_sha256":"f446eacc6fe4690f2c92218aeb11e4688abefad56b0181b55369ec52d0bf860f"},"schema_version":"1.0","source":{"id":"2501.12238","kind":"arxiv","version":1}},"canonical_sha256":"b36ef7b5f163eb5db09c3a5dcd35aff01b1b30bd956abd462fd62855de5ccff8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b36ef7b5f163eb5db09c3a5dcd35aff01b1b30bd956abd462fd62855de5ccff8","first_computed_at":"2026-07-05T10:19:36.846716Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:19:36.846716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kj9djd4bvkHAhl/vGwBUBevnZXVOwAsI1xHSz60GBg5P9BGkN17aQCdBFcpZeAaX5weDAogS1Yhj8WUosyWcAA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:19:36.847126Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.12238","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:87047b8137a74e967e60f191bf7f67f80ca72d2fc190914d50fa7c0b41075f09","sha256:6cef8788f4d4be92d2819a77c205877f7ade730f67e250605e728255d09f32d9"],"state_sha256":"a1db99c2e8c0007cd0ecfdb977a1dbf87657b4956b20130fcc8cff4519234139"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bTiV35SyKSnxv1dbK3y3iViU6VPixVhfVWJCKzbwm+dWxkoEZIDA6OYbMGDE1Zd7JX/gBHRQ0Z/xwF6rPtOsDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T11:09:53.712582Z","bundle_sha256":"e93b4f31aaedf768be31f6ca03cc3d38ab53ecb39baef1725b1f3a8485fded00"}}