{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:3ZZVL57QKOMEQOK4WSS6EF3KZU","short_pith_number":"pith:3ZZVL57Q","canonical_record":{"source":{"id":"2008.11188","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-25T17:45:37Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"d5341566c5682bd4b2d3cc13364e86889b4dea4bf5ed83ef5ce485500d9aafc1","abstract_canon_sha256":"3051112c0c11adf708a24fbe4f9d514c18053504a22e06b876f98bc54dad01f2"},"schema_version":"1.0"},"canonical_sha256":"de7355f7f0539848395cb4a5e2176acd15d20591c7127840d5cfed12593381aa","source":{"kind":"arxiv","id":"2008.11188","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.11188","created_at":"2026-07-05T01:30:14Z"},{"alias_kind":"arxiv_version","alias_value":"2008.11188v1","created_at":"2026-07-05T01:30:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.11188","created_at":"2026-07-05T01:30:14Z"},{"alias_kind":"pith_short_12","alias_value":"3ZZVL57QKOME","created_at":"2026-07-05T01:30:14Z"},{"alias_kind":"pith_short_16","alias_value":"3ZZVL57QKOMEQOK4","created_at":"2026-07-05T01:30:14Z"},{"alias_kind":"pith_short_8","alias_value":"3ZZVL57Q","created_at":"2026-07-05T01:30:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:3ZZVL57QKOMEQOK4WSS6EF3KZU","target":"record","payload":{"canonical_record":{"source":{"id":"2008.11188","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-25T17:45:37Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"d5341566c5682bd4b2d3cc13364e86889b4dea4bf5ed83ef5ce485500d9aafc1","abstract_canon_sha256":"3051112c0c11adf708a24fbe4f9d514c18053504a22e06b876f98bc54dad01f2"},"schema_version":"1.0"},"canonical_sha256":"de7355f7f0539848395cb4a5e2176acd15d20591c7127840d5cfed12593381aa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:30:14.961803Z","signature_b64":"EyZINRYku/Zk8zhqvRsoELkD3C2B/VHZEN6QAkLs0CUsQE6RlJ9qwnNVTTb2T1lkOZMh+PLODTWfkZ+ZQy5YBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"de7355f7f0539848395cb4a5e2176acd15d20591c7127840d5cfed12593381aa","last_reissued_at":"2026-07-05T01:30:14.961453Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:30:14.961453Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.11188","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":"2026-07-05T01:30:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q4N0kz++GeLWmmPDoWQqW7ZF0sh21fUscXreH6j9VPjT1ktEG4sdAklobdmWGB/nIZt3xpi9qndI/5v2HKFYBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T09:52:41.698474Z"},"content_sha256":"1c21afe777ca954ee4e9a0deabba1130af49cbc501048181c87c6b0a4fa8a0c6","schema_version":"1.0","event_id":"sha256:1c21afe777ca954ee4e9a0deabba1130af49cbc501048181c87c6b0a4fa8a0c6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:3ZZVL57QKOMEQOK4WSS6EF3KZU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"New Limits on Axionic Dark Matter from the Magnetar PSR J1745-2900","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Jeremy Darling","submitted_at":"2020-08-25T17:45:37Z","abstract_excerpt":"Axions are a promising dark matter candidate that were motivated to solve the strong CP problem and that may also address the cosmological matter-antimatter asymmetry. Axion-photon conversion is possible in the presence of the strong magnetic fields, and the photon so produced will have energy equal to the axion mass. Here we report new limits on axionic dark matter obtained from radio spectra of the Galactic Center magnetar PSR J1745-2900. The magnetar has a magnetic field of $1.6\\times10^{14}$ G that interacts with a dark matter density $2\\times10^5$ to $2\\times10^9$ times greater than the l"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.11188","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/2008.11188/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":"2026-07-05T01:30:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HaZRxZIx90WygMeUwUKC93X3Sf59H7Gxb+g+j08tE79pMZtMbDAgjpPo7s8a53k+sBzKhRRFP/0v9GrsV9mOBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T09:52:41.698975Z"},"content_sha256":"ed5b3e03fdd2c7aa390e0764a84dcfac7f800436fcd0521cd9fb288ab3ee2957","schema_version":"1.0","event_id":"sha256:ed5b3e03fdd2c7aa390e0764a84dcfac7f800436fcd0521cd9fb288ab3ee2957"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3ZZVL57QKOMEQOK4WSS6EF3KZU/bundle.json","state_url":"https://pith.science/pith/3ZZVL57QKOMEQOK4WSS6EF3KZU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3ZZVL57QKOMEQOK4WSS6EF3KZU/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":"2026-08-05T09:52:41Z","links":{"resolver":"https://pith.science/pith/3ZZVL57QKOMEQOK4WSS6EF3KZU","bundle":"https://pith.science/pith/3ZZVL57QKOMEQOK4WSS6EF3KZU/bundle.json","state":"https://pith.science/pith/3ZZVL57QKOMEQOK4WSS6EF3KZU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3ZZVL57QKOMEQOK4WSS6EF3KZU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:3ZZVL57QKOMEQOK4WSS6EF3KZU","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":"3051112c0c11adf708a24fbe4f9d514c18053504a22e06b876f98bc54dad01f2","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-25T17:45:37Z","title_canon_sha256":"d5341566c5682bd4b2d3cc13364e86889b4dea4bf5ed83ef5ce485500d9aafc1"},"schema_version":"1.0","source":{"id":"2008.11188","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.11188","created_at":"2026-07-05T01:30:14Z"},{"alias_kind":"arxiv_version","alias_value":"2008.11188v1","created_at":"2026-07-05T01:30:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.11188","created_at":"2026-07-05T01:30:14Z"},{"alias_kind":"pith_short_12","alias_value":"3ZZVL57QKOME","created_at":"2026-07-05T01:30:14Z"},{"alias_kind":"pith_short_16","alias_value":"3ZZVL57QKOMEQOK4","created_at":"2026-07-05T01:30:14Z"},{"alias_kind":"pith_short_8","alias_value":"3ZZVL57Q","created_at":"2026-07-05T01:30:14Z"}],"graph_snapshots":[{"event_id":"sha256:ed5b3e03fdd2c7aa390e0764a84dcfac7f800436fcd0521cd9fb288ab3ee2957","target":"graph","created_at":"2026-07-05T01:30:14Z","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/2008.11188/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Axions are a promising dark matter candidate that were motivated to solve the strong CP problem and that may also address the cosmological matter-antimatter asymmetry. Axion-photon conversion is possible in the presence of the strong magnetic fields, and the photon so produced will have energy equal to the axion mass. Here we report new limits on axionic dark matter obtained from radio spectra of the Galactic Center magnetar PSR J1745-2900. The magnetar has a magnetic field of $1.6\\times10^{14}$ G that interacts with a dark matter density $2\\times10^5$ to $2\\times10^9$ times greater than the l","authors_text":"Jeremy Darling","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-25T17:45:37Z","title":"New Limits on Axionic Dark Matter from the Magnetar PSR J1745-2900"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.11188","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":"sha256:1c21afe777ca954ee4e9a0deabba1130af49cbc501048181c87c6b0a4fa8a0c6","target":"record","created_at":"2026-07-05T01:30:14Z","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":"3051112c0c11adf708a24fbe4f9d514c18053504a22e06b876f98bc54dad01f2","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-25T17:45:37Z","title_canon_sha256":"d5341566c5682bd4b2d3cc13364e86889b4dea4bf5ed83ef5ce485500d9aafc1"},"schema_version":"1.0","source":{"id":"2008.11188","kind":"arxiv","version":1}},"canonical_sha256":"de7355f7f0539848395cb4a5e2176acd15d20591c7127840d5cfed12593381aa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"de7355f7f0539848395cb4a5e2176acd15d20591c7127840d5cfed12593381aa","first_computed_at":"2026-07-05T01:30:14.961453Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:30:14.961453Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EyZINRYku/Zk8zhqvRsoELkD3C2B/VHZEN6QAkLs0CUsQE6RlJ9qwnNVTTb2T1lkOZMh+PLODTWfkZ+ZQy5YBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:30:14.961803Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.11188","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c21afe777ca954ee4e9a0deabba1130af49cbc501048181c87c6b0a4fa8a0c6","sha256:ed5b3e03fdd2c7aa390e0764a84dcfac7f800436fcd0521cd9fb288ab3ee2957"],"state_sha256":"10e61e3d7e2152aa15bc8da5bdbc2e9ff890ae6b08f12a82bc04879889edef17"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NxwoMgcmBZUdUiSG43DzRGI6BlsV0YAtCreqI+tZclamEid7KE+KnwvddrU9ESJkjO1t7DAJujzj6xCbKoh3Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T09:52:41.702713Z","bundle_sha256":"611d108cc48674d0f9e321e70d569f62df82193d60f5efcbca73d5ecfea4d630"}}