{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:MTSEPN57BJF7NBVTLBK2V7NDQ4","short_pith_number":"pith:MTSEPN57","canonical_record":{"source":{"id":"1109.0070","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-09-01T02:21:52Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"02b3ac28f18bb69e6f1ae28a07342c349a3a9b4197d37443f6faad22edcb690c","abstract_canon_sha256":"4e856347c8ce6eaeb4a83e78933e00ea6d3a20709b4ea32f559e6f826636a86b"},"schema_version":"1.0"},"canonical_sha256":"64e447b7bf0a4bf686b35855aafda38721b62c816d210fe25630dc902b574bfe","source":{"kind":"arxiv","id":"1109.0070","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.0070","created_at":"2026-05-18T02:00:43Z"},{"alias_kind":"arxiv_version","alias_value":"1109.0070v1","created_at":"2026-05-18T02:00:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.0070","created_at":"2026-05-18T02:00:43Z"},{"alias_kind":"pith_short_12","alias_value":"MTSEPN57BJF7","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_16","alias_value":"MTSEPN57BJF7NBVT","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_8","alias_value":"MTSEPN57","created_at":"2026-05-18T12:26:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:MTSEPN57BJF7NBVTLBK2V7NDQ4","target":"record","payload":{"canonical_record":{"source":{"id":"1109.0070","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-09-01T02:21:52Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"02b3ac28f18bb69e6f1ae28a07342c349a3a9b4197d37443f6faad22edcb690c","abstract_canon_sha256":"4e856347c8ce6eaeb4a83e78933e00ea6d3a20709b4ea32f559e6f826636a86b"},"schema_version":"1.0"},"canonical_sha256":"64e447b7bf0a4bf686b35855aafda38721b62c816d210fe25630dc902b574bfe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:43.608541Z","signature_b64":"uXmrcY7XDzuK8IWF/jhLhfs5ze4RpBTBlOkCysgqe1n3/eIA0YdtXdjjTfdXbCS6RIBSO8FoK9eBJ5JBixYGBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"64e447b7bf0a4bf686b35855aafda38721b62c816d210fe25630dc902b574bfe","last_reissued_at":"2026-05-18T02:00:43.607781Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:43.607781Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.0070","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":"2026-05-18T02:00:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lM5/VaDd4bssk197tOgfZaETWHPQqJn+oxXN/o4bBx9alxMfyP5//lE0fqkm5z1olC/R4E5tVe1oLeRkbuMUAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T23:15:21.734561Z"},"content_sha256":"470ec8f551f94b73c6238ca42e2961d506f5a2d81287ff25bdefc55bda50010a","schema_version":"1.0","event_id":"sha256:470ec8f551f94b73c6238ca42e2961d506f5a2d81287ff25bdefc55bda50010a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:MTSEPN57BJF7NBVTLBK2V7NDQ4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Relativistic Electron Shock Drift Acceleration in Low Mach Number Galaxy Cluster Shocks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Ryo Yamazaki, Shuichi Matsukiyo, Takayuki Umeda, Yutaka Ohira","submitted_at":"2011-09-01T02:21:52Z","abstract_excerpt":"An extreme case of electron shock drift acceleration in low Mach number collisionless shocks is investigated as a plausible mechanism of initial acceleration of relativistic electrons in large-scale shocks in galaxy clusters where upstream plasma temperature is of the order of 10 keV and a degree of magnetization is not too small. One-dimensional electromagnetic full particle simulations reveal that, even though a shock is rather moderate, a part of thermal incoming electrons are accelerated and reflected through relativistic shock drift acceleration and form a local nonthermal population just"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.0070","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":""},"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":"2026-05-18T02:00:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3TSxxFunM4UwX5/pA0kgTtgNUcqOe0FpmjAAWoNU0z6nxTB2KIsHeiZhd8WjxJBfmatwNroLN9o8Nf40WixyCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T23:15:21.735207Z"},"content_sha256":"3e80b606e624e44db54dd51fc6ab94ef5e4feb0893f21c8e847b0ce210ceb338","schema_version":"1.0","event_id":"sha256:3e80b606e624e44db54dd51fc6ab94ef5e4feb0893f21c8e847b0ce210ceb338"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MTSEPN57BJF7NBVTLBK2V7NDQ4/bundle.json","state_url":"https://pith.science/pith/MTSEPN57BJF7NBVTLBK2V7NDQ4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MTSEPN57BJF7NBVTLBK2V7NDQ4/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":"2026-05-27T23:15:21Z","links":{"resolver":"https://pith.science/pith/MTSEPN57BJF7NBVTLBK2V7NDQ4","bundle":"https://pith.science/pith/MTSEPN57BJF7NBVTLBK2V7NDQ4/bundle.json","state":"https://pith.science/pith/MTSEPN57BJF7NBVTLBK2V7NDQ4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MTSEPN57BJF7NBVTLBK2V7NDQ4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:MTSEPN57BJF7NBVTLBK2V7NDQ4","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":"4e856347c8ce6eaeb4a83e78933e00ea6d3a20709b4ea32f559e6f826636a86b","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-09-01T02:21:52Z","title_canon_sha256":"02b3ac28f18bb69e6f1ae28a07342c349a3a9b4197d37443f6faad22edcb690c"},"schema_version":"1.0","source":{"id":"1109.0070","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.0070","created_at":"2026-05-18T02:00:43Z"},{"alias_kind":"arxiv_version","alias_value":"1109.0070v1","created_at":"2026-05-18T02:00:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.0070","created_at":"2026-05-18T02:00:43Z"},{"alias_kind":"pith_short_12","alias_value":"MTSEPN57BJF7","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_16","alias_value":"MTSEPN57BJF7NBVT","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_8","alias_value":"MTSEPN57","created_at":"2026-05-18T12:26:34Z"}],"graph_snapshots":[{"event_id":"sha256:3e80b606e624e44db54dd51fc6ab94ef5e4feb0893f21c8e847b0ce210ceb338","target":"graph","created_at":"2026-05-18T02:00:43Z","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"},"paper":{"abstract_excerpt":"An extreme case of electron shock drift acceleration in low Mach number collisionless shocks is investigated as a plausible mechanism of initial acceleration of relativistic electrons in large-scale shocks in galaxy clusters where upstream plasma temperature is of the order of 10 keV and a degree of magnetization is not too small. One-dimensional electromagnetic full particle simulations reveal that, even though a shock is rather moderate, a part of thermal incoming electrons are accelerated and reflected through relativistic shock drift acceleration and form a local nonthermal population just","authors_text":"Ryo Yamazaki, Shuichi Matsukiyo, Takayuki Umeda, Yutaka Ohira","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-09-01T02:21:52Z","title":"Relativistic Electron Shock Drift Acceleration in Low Mach Number Galaxy Cluster Shocks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.0070","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":"sha256:470ec8f551f94b73c6238ca42e2961d506f5a2d81287ff25bdefc55bda50010a","target":"record","created_at":"2026-05-18T02:00:43Z","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":"4e856347c8ce6eaeb4a83e78933e00ea6d3a20709b4ea32f559e6f826636a86b","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-09-01T02:21:52Z","title_canon_sha256":"02b3ac28f18bb69e6f1ae28a07342c349a3a9b4197d37443f6faad22edcb690c"},"schema_version":"1.0","source":{"id":"1109.0070","kind":"arxiv","version":1}},"canonical_sha256":"64e447b7bf0a4bf686b35855aafda38721b62c816d210fe25630dc902b574bfe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"64e447b7bf0a4bf686b35855aafda38721b62c816d210fe25630dc902b574bfe","first_computed_at":"2026-05-18T02:00:43.607781Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:00:43.607781Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uXmrcY7XDzuK8IWF/jhLhfs5ze4RpBTBlOkCysgqe1n3/eIA0YdtXdjjTfdXbCS6RIBSO8FoK9eBJ5JBixYGBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:00:43.608541Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.0070","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:470ec8f551f94b73c6238ca42e2961d506f5a2d81287ff25bdefc55bda50010a","sha256:3e80b606e624e44db54dd51fc6ab94ef5e4feb0893f21c8e847b0ce210ceb338"],"state_sha256":"6dc6631d5e64d71509c7e1cfdc5e6504b151486beb61738da703507b1f97d263"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ypOuMfRoho4Ud8vvPbgYBt80AOyyMpvFrUxWVUWzOkviyefitFAEF41U/QODtU8yc4gGO2UaOjn+NnZP9s9PCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T23:15:21.738339Z","bundle_sha256":"e4185943f908ee737449d9308b0e2ba9e1923c10341c2da5bfd98ae5f17eabdd"}}