{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:5OIO4KCZ2LMICYEWSCHYDZPS2I","short_pith_number":"pith:5OIO4KCZ","canonical_record":{"source":{"id":"1504.06053","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-04-23T06:34:55Z","cross_cats_sorted":["physics.space-ph"],"title_canon_sha256":"769ed238f32a284e56b6c39492e26ffc8409b501a5469f648796788b7e48291b","abstract_canon_sha256":"e71dc1401592ff0c5843da158831a223b3f5a81f4b48a2945194477157649f4e"},"schema_version":"1.0"},"canonical_sha256":"eb90ee2859d2d8816096908f81e5f2d223728e5d958fd01cbe6ca9cdbd599488","source":{"kind":"arxiv","id":"1504.06053","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.06053","created_at":"2026-05-18T01:28:56Z"},{"alias_kind":"arxiv_version","alias_value":"1504.06053v1","created_at":"2026-05-18T01:28:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.06053","created_at":"2026-05-18T01:28:56Z"},{"alias_kind":"pith_short_12","alias_value":"5OIO4KCZ2LMI","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"5OIO4KCZ2LMICYEW","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"5OIO4KCZ","created_at":"2026-05-18T12:29:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:5OIO4KCZ2LMICYEWSCHYDZPS2I","target":"record","payload":{"canonical_record":{"source":{"id":"1504.06053","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-04-23T06:34:55Z","cross_cats_sorted":["physics.space-ph"],"title_canon_sha256":"769ed238f32a284e56b6c39492e26ffc8409b501a5469f648796788b7e48291b","abstract_canon_sha256":"e71dc1401592ff0c5843da158831a223b3f5a81f4b48a2945194477157649f4e"},"schema_version":"1.0"},"canonical_sha256":"eb90ee2859d2d8816096908f81e5f2d223728e5d958fd01cbe6ca9cdbd599488","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:28:56.588459Z","signature_b64":"RfayN7zE+BYUihN/9ur42LnugBSYccse5WS0LUozt64geiKCAu0Tdv3I0wRAvfFKj8WPzLM8hdR/TZtLWEdSAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eb90ee2859d2d8816096908f81e5f2d223728e5d958fd01cbe6ca9cdbd599488","last_reissued_at":"2026-05-18T01:28:56.587859Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:28:56.587859Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.06053","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":"2026-05-18T01:28:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ACn96LB/fq6/BxRkQtzgmMpL57ZdZ60+PG+ARGYvjvJsi5YuAFLk4GTfW/1G1DkDrLkjgPEyhjXNw98vVoMwDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:32:18.868763Z"},"content_sha256":"68d1d4e5f3e2b6b6752e55971a3c5e72497433706c8a967625c80b372e850490","schema_version":"1.0","event_id":"sha256:68d1d4e5f3e2b6b6752e55971a3c5e72497433706c8a967625c80b372e850490"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:5OIO4KCZ2LMICYEWSCHYDZPS2I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"In situ Evidence of Breaking the Ion Frozen-in Condition via the Non-gyrotropic Pressure Effect in Magnetic Reconnection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.space-ph"],"primary_cat":"physics.plasm-ph","authors_text":"Chi Wang, Karl-Heinz Glassmeier, Lei Dai, Vassilis Angelopoulos","submitted_at":"2015-04-23T06:34:55Z","abstract_excerpt":"For magnetic reconnection to proceed, the frozen-in condition for both ion fluid and electron fluid in a localized diffusion region must be violated by inertial effects, thermal pressure effects, or inter-species collisions. It has been unclear which underlying effects unfreeze ion fluid in the diffusion region. By analyzing in-situ THEMIS spacecraft measurements at the dayside magnetopause, we present clear evidence that the off-diagonal components of the ion pressure tensor is mainly responsible for breaking the ion frozen-in condition in reconnection. The off-diagonal pressure tensor, which"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.06053","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":"2026-05-18T01:28:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"khNpGpPADw8ds70/TO+21I+3iYQcW8Qba76I0eUplrACq+8yguKJQikumxFqfEXPEJrXFh5ypHyRw7FWSaLQDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:32:18.869474Z"},"content_sha256":"ffe27fe5619513a237f251a159cdf41715a76d6c519e0a101f10ae69d21f0e81","schema_version":"1.0","event_id":"sha256:ffe27fe5619513a237f251a159cdf41715a76d6c519e0a101f10ae69d21f0e81"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5OIO4KCZ2LMICYEWSCHYDZPS2I/bundle.json","state_url":"https://pith.science/pith/5OIO4KCZ2LMICYEWSCHYDZPS2I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5OIO4KCZ2LMICYEWSCHYDZPS2I/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":"2026-05-27T03:32:18Z","links":{"resolver":"https://pith.science/pith/5OIO4KCZ2LMICYEWSCHYDZPS2I","bundle":"https://pith.science/pith/5OIO4KCZ2LMICYEWSCHYDZPS2I/bundle.json","state":"https://pith.science/pith/5OIO4KCZ2LMICYEWSCHYDZPS2I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5OIO4KCZ2LMICYEWSCHYDZPS2I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:5OIO4KCZ2LMICYEWSCHYDZPS2I","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":"e71dc1401592ff0c5843da158831a223b3f5a81f4b48a2945194477157649f4e","cross_cats_sorted":["physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-04-23T06:34:55Z","title_canon_sha256":"769ed238f32a284e56b6c39492e26ffc8409b501a5469f648796788b7e48291b"},"schema_version":"1.0","source":{"id":"1504.06053","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.06053","created_at":"2026-05-18T01:28:56Z"},{"alias_kind":"arxiv_version","alias_value":"1504.06053v1","created_at":"2026-05-18T01:28:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.06053","created_at":"2026-05-18T01:28:56Z"},{"alias_kind":"pith_short_12","alias_value":"5OIO4KCZ2LMI","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"5OIO4KCZ2LMICYEW","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"5OIO4KCZ","created_at":"2026-05-18T12:29:05Z"}],"graph_snapshots":[{"event_id":"sha256:ffe27fe5619513a237f251a159cdf41715a76d6c519e0a101f10ae69d21f0e81","target":"graph","created_at":"2026-05-18T01:28:56Z","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":"For magnetic reconnection to proceed, the frozen-in condition for both ion fluid and electron fluid in a localized diffusion region must be violated by inertial effects, thermal pressure effects, or inter-species collisions. It has been unclear which underlying effects unfreeze ion fluid in the diffusion region. By analyzing in-situ THEMIS spacecraft measurements at the dayside magnetopause, we present clear evidence that the off-diagonal components of the ion pressure tensor is mainly responsible for breaking the ion frozen-in condition in reconnection. The off-diagonal pressure tensor, which","authors_text":"Chi Wang, Karl-Heinz Glassmeier, Lei Dai, Vassilis Angelopoulos","cross_cats":["physics.space-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-04-23T06:34:55Z","title":"In situ Evidence of Breaking the Ion Frozen-in Condition via the Non-gyrotropic Pressure Effect in Magnetic Reconnection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.06053","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":"sha256:68d1d4e5f3e2b6b6752e55971a3c5e72497433706c8a967625c80b372e850490","target":"record","created_at":"2026-05-18T01:28:56Z","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":"e71dc1401592ff0c5843da158831a223b3f5a81f4b48a2945194477157649f4e","cross_cats_sorted":["physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-04-23T06:34:55Z","title_canon_sha256":"769ed238f32a284e56b6c39492e26ffc8409b501a5469f648796788b7e48291b"},"schema_version":"1.0","source":{"id":"1504.06053","kind":"arxiv","version":1}},"canonical_sha256":"eb90ee2859d2d8816096908f81e5f2d223728e5d958fd01cbe6ca9cdbd599488","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eb90ee2859d2d8816096908f81e5f2d223728e5d958fd01cbe6ca9cdbd599488","first_computed_at":"2026-05-18T01:28:56.587859Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:28:56.587859Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RfayN7zE+BYUihN/9ur42LnugBSYccse5WS0LUozt64geiKCAu0Tdv3I0wRAvfFKj8WPzLM8hdR/TZtLWEdSAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:28:56.588459Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.06053","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68d1d4e5f3e2b6b6752e55971a3c5e72497433706c8a967625c80b372e850490","sha256:ffe27fe5619513a237f251a159cdf41715a76d6c519e0a101f10ae69d21f0e81"],"state_sha256":"8ae0f4a5b20a0b5215edff3d70f7f79537b1cd1773df8586ee135ec5f314492c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KtxzAz8O9XWKEwRwxCpjj99eBCbVOuUqX6fyGbocWfRoQdQfSUUEnrBcISezEzBc7HFg6+Hyf4MAIg2s1TJUAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T03:32:18.873145Z","bundle_sha256":"c4d40b7cc3dad6c66a28dc667e9dc0ff39622dc5cab1517bdfab4106e9afdb2a"}}