{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:7GMLOYAM3PMM6FMF7AWLIII7HW","short_pith_number":"pith:7GMLOYAM","canonical_record":{"source":{"id":"2605.26265","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-25T18:50:57Z","cross_cats_sorted":["astro-ph.HE","hep-ph"],"title_canon_sha256":"6f3e5b6953947a758334ee500714c050ce01bce8c0b3529377b57e5b696fc979","abstract_canon_sha256":"7846a31b090b6207bf5114e13866bf283b65f905e497eb802ac2f4a76b199097"},"schema_version":"1.0"},"canonical_sha256":"f998b7600cdbd8cf1585f82cb4211f3db86c7539c79e918ad22e7ec22808be10","source":{"kind":"arxiv","id":"2605.26265","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.26265","created_at":"2026-05-27T01:05:08Z"},{"alias_kind":"arxiv_version","alias_value":"2605.26265v1","created_at":"2026-05-27T01:05:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.26265","created_at":"2026-05-27T01:05:08Z"},{"alias_kind":"pith_short_12","alias_value":"7GMLOYAM3PMM","created_at":"2026-05-27T01:05:08Z"},{"alias_kind":"pith_short_16","alias_value":"7GMLOYAM3PMM6FMF","created_at":"2026-05-27T01:05:08Z"},{"alias_kind":"pith_short_8","alias_value":"7GMLOYAM","created_at":"2026-05-27T01:05:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:7GMLOYAM3PMM6FMF7AWLIII7HW","target":"record","payload":{"canonical_record":{"source":{"id":"2605.26265","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-25T18:50:57Z","cross_cats_sorted":["astro-ph.HE","hep-ph"],"title_canon_sha256":"6f3e5b6953947a758334ee500714c050ce01bce8c0b3529377b57e5b696fc979","abstract_canon_sha256":"7846a31b090b6207bf5114e13866bf283b65f905e497eb802ac2f4a76b199097"},"schema_version":"1.0"},"canonical_sha256":"f998b7600cdbd8cf1585f82cb4211f3db86c7539c79e918ad22e7ec22808be10","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-27T01:05:08.995411Z","signature_b64":"rzycMPPXnalnvFFp8yNGd8bW4dD6kB/zNqMwbvZBvNHRKFTdFwvDTb/sHipz1BP0h2ebU8/GOICBKGuJYZsSAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f998b7600cdbd8cf1585f82cb4211f3db86c7539c79e918ad22e7ec22808be10","last_reissued_at":"2026-05-27T01:05:08.994510Z","signature_status":"signed_v1","first_computed_at":"2026-05-27T01:05:08.994510Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.26265","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":"2026-05-27T01:05:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z949wuerNPkBmeBFBbTP72Sc26eC2TvlRCcU2pAbaMC5OxQ7GXv2jXth3al7DHKEkhRcYkqJl3tGH4DqyYKgCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T17:38:39.153039Z"},"content_sha256":"6912cbb6ebe30584b76ca6a39cab2411533ea7f6421e6d57c49841b91032d0af","schema_version":"1.0","event_id":"sha256:6912cbb6ebe30584b76ca6a39cab2411533ea7f6421e6d57c49841b91032d0af"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:7GMLOYAM3PMM6FMF7AWLIII7HW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"NuSTAR as an Axion Helioscope: probing axion-nucleon and axion-electron couplings","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Elisa Todarello, Francisco R. Cand\\'on, Jaime Ruz, Julia K. Vogel, Marco Regis, Marco Taoso, Maurizio Giannotti, Tiziano Zanzarella","submitted_at":"2026-05-25T18:50:57Z","abstract_excerpt":"We investigate solar X-ray observations as a probe of axions and axion-like particles. These particles can be produced in the interior of the Sun via the conversion of thermal photons, as well as through processes involving axion-electron and axion-nucleon interactions. The resulting axions can then reconvert into photons in the Sun's atmospheric magnetic field, generating a signal in the X-ray energy range. In this work, we derive new limits on axions using X-ray observations with the Nuclear Spectroscopic Telescope Array (NuSTAR) during the 2020 solar minimum. In the regime where ALP product"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.26265","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/2605.26265/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":"2026-05-27T01:05:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iLTtjG+547eq198wlBhfptNp6BvGcXCZZQaMgIaPjj9mIYxxpPsgxijCmDMdSGoiTZ4vdn/DNBxcBnXjC3EzCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T17:38:39.153779Z"},"content_sha256":"30b1e57ccda0c3dfc4bbbed2ffcc33e5e24899df51c6cccad0aacac0e053558a","schema_version":"1.0","event_id":"sha256:30b1e57ccda0c3dfc4bbbed2ffcc33e5e24899df51c6cccad0aacac0e053558a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7GMLOYAM3PMM6FMF7AWLIII7HW/bundle.json","state_url":"https://pith.science/pith/7GMLOYAM3PMM6FMF7AWLIII7HW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7GMLOYAM3PMM6FMF7AWLIII7HW/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":"2026-05-27T17:38:39Z","links":{"resolver":"https://pith.science/pith/7GMLOYAM3PMM6FMF7AWLIII7HW","bundle":"https://pith.science/pith/7GMLOYAM3PMM6FMF7AWLIII7HW/bundle.json","state":"https://pith.science/pith/7GMLOYAM3PMM6FMF7AWLIII7HW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7GMLOYAM3PMM6FMF7AWLIII7HW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:7GMLOYAM3PMM6FMF7AWLIII7HW","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":"7846a31b090b6207bf5114e13866bf283b65f905e497eb802ac2f4a76b199097","cross_cats_sorted":["astro-ph.HE","hep-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-25T18:50:57Z","title_canon_sha256":"6f3e5b6953947a758334ee500714c050ce01bce8c0b3529377b57e5b696fc979"},"schema_version":"1.0","source":{"id":"2605.26265","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.26265","created_at":"2026-05-27T01:05:08Z"},{"alias_kind":"arxiv_version","alias_value":"2605.26265v1","created_at":"2026-05-27T01:05:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.26265","created_at":"2026-05-27T01:05:08Z"},{"alias_kind":"pith_short_12","alias_value":"7GMLOYAM3PMM","created_at":"2026-05-27T01:05:08Z"},{"alias_kind":"pith_short_16","alias_value":"7GMLOYAM3PMM6FMF","created_at":"2026-05-27T01:05:08Z"},{"alias_kind":"pith_short_8","alias_value":"7GMLOYAM","created_at":"2026-05-27T01:05:08Z"}],"graph_snapshots":[{"event_id":"sha256:30b1e57ccda0c3dfc4bbbed2ffcc33e5e24899df51c6cccad0aacac0e053558a","target":"graph","created_at":"2026-05-27T01:05:08Z","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/2605.26265/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate solar X-ray observations as a probe of axions and axion-like particles. These particles can be produced in the interior of the Sun via the conversion of thermal photons, as well as through processes involving axion-electron and axion-nucleon interactions. The resulting axions can then reconvert into photons in the Sun's atmospheric magnetic field, generating a signal in the X-ray energy range. In this work, we derive new limits on axions using X-ray observations with the Nuclear Spectroscopic Telescope Array (NuSTAR) during the 2020 solar minimum. In the regime where ALP product","authors_text":"Elisa Todarello, Francisco R. Cand\\'on, Jaime Ruz, Julia K. Vogel, Marco Regis, Marco Taoso, Maurizio Giannotti, Tiziano Zanzarella","cross_cats":["astro-ph.HE","hep-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-25T18:50:57Z","title":"NuSTAR as an Axion Helioscope: probing axion-nucleon and axion-electron couplings"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.26265","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":"sha256:6912cbb6ebe30584b76ca6a39cab2411533ea7f6421e6d57c49841b91032d0af","target":"record","created_at":"2026-05-27T01:05:08Z","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":"7846a31b090b6207bf5114e13866bf283b65f905e497eb802ac2f4a76b199097","cross_cats_sorted":["astro-ph.HE","hep-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-25T18:50:57Z","title_canon_sha256":"6f3e5b6953947a758334ee500714c050ce01bce8c0b3529377b57e5b696fc979"},"schema_version":"1.0","source":{"id":"2605.26265","kind":"arxiv","version":1}},"canonical_sha256":"f998b7600cdbd8cf1585f82cb4211f3db86c7539c79e918ad22e7ec22808be10","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f998b7600cdbd8cf1585f82cb4211f3db86c7539c79e918ad22e7ec22808be10","first_computed_at":"2026-05-27T01:05:08.994510Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-27T01:05:08.994510Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rzycMPPXnalnvFFp8yNGd8bW4dD6kB/zNqMwbvZBvNHRKFTdFwvDTb/sHipz1BP0h2ebU8/GOICBKGuJYZsSAA==","signature_status":"signed_v1","signed_at":"2026-05-27T01:05:08.995411Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.26265","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6912cbb6ebe30584b76ca6a39cab2411533ea7f6421e6d57c49841b91032d0af","sha256:30b1e57ccda0c3dfc4bbbed2ffcc33e5e24899df51c6cccad0aacac0e053558a"],"state_sha256":"eeb75743f12c7f4444a2607f171078f553c13260a12c1c1ec5e73d3a4100eb7a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"thwPkyxE2twQ5KcsImTI4JQMgBp3kBHr3NDcGAVTHoF/kJAWHC2+YUMbKaTYZarU+H8Dmv2qqplSfHSOjTxtCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T17:38:39.157533Z","bundle_sha256":"27d2d05dcd90ac0474658e19f393f4698d033da9bef859f9ed53ad271276a3c6"}}