{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:ODU6UN6ZZZY73VERGBXYQCWOO4","short_pith_number":"pith:ODU6UN6Z","canonical_record":{"source":{"id":"1505.06068","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.space-ph","submitted_at":"2015-05-22T13:31:36Z","cross_cats_sorted":[],"title_canon_sha256":"f6d4da02e756c5e04779be171889d5734b86ab855e5bccbefe0c4e17f53064db","abstract_canon_sha256":"131b93255f7ef7fd061818b19a78cf2d2c0738bab7cbbfab548b7d45c1ce04cd"},"schema_version":"1.0"},"canonical_sha256":"70e9ea37d9ce71fdd491306f880ace7702515bd95386e6e70df1e6a5fc34dab6","source":{"kind":"arxiv","id":"1505.06068","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.06068","created_at":"2026-05-18T01:35:00Z"},{"alias_kind":"arxiv_version","alias_value":"1505.06068v2","created_at":"2026-05-18T01:35:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.06068","created_at":"2026-05-18T01:35:00Z"},{"alias_kind":"pith_short_12","alias_value":"ODU6UN6ZZZY7","created_at":"2026-05-18T12:29:34Z"},{"alias_kind":"pith_short_16","alias_value":"ODU6UN6ZZZY73VER","created_at":"2026-05-18T12:29:34Z"},{"alias_kind":"pith_short_8","alias_value":"ODU6UN6Z","created_at":"2026-05-18T12:29:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:ODU6UN6ZZZY73VERGBXYQCWOO4","target":"record","payload":{"canonical_record":{"source":{"id":"1505.06068","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.space-ph","submitted_at":"2015-05-22T13:31:36Z","cross_cats_sorted":[],"title_canon_sha256":"f6d4da02e756c5e04779be171889d5734b86ab855e5bccbefe0c4e17f53064db","abstract_canon_sha256":"131b93255f7ef7fd061818b19a78cf2d2c0738bab7cbbfab548b7d45c1ce04cd"},"schema_version":"1.0"},"canonical_sha256":"70e9ea37d9ce71fdd491306f880ace7702515bd95386e6e70df1e6a5fc34dab6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:00.569277Z","signature_b64":"BeUlG5ieheIrONlXB+tkUOF/txRxoVa/y5yeNpwq6hh9vFtIhag7oo/O18WQl3b2EyK/K4iYNTmJ9UeMiLfiAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"70e9ea37d9ce71fdd491306f880ace7702515bd95386e6e70df1e6a5fc34dab6","last_reissued_at":"2026-05-18T01:35:00.568664Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:00.568664Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.06068","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:35:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FxzVvTUTKDlp9JLEQ+RsLt3SwrcUKRR6qGPfTaulDal5TbTcxCFCUVEq+lkwJR0caLW3iET2sDgpuMGeNHfBCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T14:40:29.102619Z"},"content_sha256":"d87243bcf4df0f645c22d256edd66766c7a707043a8da2bb27326a9da7ba2035","schema_version":"1.0","event_id":"sha256:d87243bcf4df0f645c22d256edd66766c7a707043a8da2bb27326a9da7ba2035"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:ODU6UN6ZZZY73VERGBXYQCWOO4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of a New Type of Low Frequency Waves at Comet 67P/Churyumov-Gerasimenko","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.space-ph","authors_text":"A. Eriksson, B. Stoll, B. T. Tsurutani, C. Carr, C. Goetz, C.Koenders, C. Perschke, C. Vallat, D. Fruehauff, E. Cupido, H. Nilsson, H.-U. Auster, I. Richter, J. Burch, J.-P. Lebreton, K. Altwegg, K.-H. Glassmeier, K. Szegoe, M. Rubin, M. Volwerk, P. Heinisch, P. Henri, P. Mokashi, R. Goldstein, U. Motschmann, Z. Nemeth","submitted_at":"2015-05-22T13:31:36Z","abstract_excerpt":"We report on magnetic field measurements made in the innermost coma of 67P/Churyumov-Gerasimenko in its low activity state. Quasi-coherent, large-amplitude ($\\delta B/B \\sim 1$), compressional magnetic field oscillations at $\\sim$ 40 mHz dominate the immediate plasma environment of the nucleus. This differs from previously studied comet-interaction regions where waves at the cometary ion gyro-frequencies are the main feature. Thus classical pick-up ion driven instabilities are unable to explain the observations. We propose a cross-field current instability associated with newborn cometary ion "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.06068","kind":"arxiv","version":2},"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":"2026-05-18T01:35:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9OogHL2nvRyc37zrKAD1NF0aHf5HjMf3odPxsnyF5g2M4zBp50ZVOqYW/0BVwXJXFblH1p3zC0Y5bE5ZhtdYBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T14:40:29.102980Z"},"content_sha256":"5c120d389eb842b2f385c97ff679e0344df88e06ed95d6ab435e10069bcd2a2e","schema_version":"1.0","event_id":"sha256:5c120d389eb842b2f385c97ff679e0344df88e06ed95d6ab435e10069bcd2a2e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ODU6UN6ZZZY73VERGBXYQCWOO4/bundle.json","state_url":"https://pith.science/pith/ODU6UN6ZZZY73VERGBXYQCWOO4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ODU6UN6ZZZY73VERGBXYQCWOO4/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":"2026-05-28T14:40:29Z","links":{"resolver":"https://pith.science/pith/ODU6UN6ZZZY73VERGBXYQCWOO4","bundle":"https://pith.science/pith/ODU6UN6ZZZY73VERGBXYQCWOO4/bundle.json","state":"https://pith.science/pith/ODU6UN6ZZZY73VERGBXYQCWOO4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ODU6UN6ZZZY73VERGBXYQCWOO4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ODU6UN6ZZZY73VERGBXYQCWOO4","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":"131b93255f7ef7fd061818b19a78cf2d2c0738bab7cbbfab548b7d45c1ce04cd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.space-ph","submitted_at":"2015-05-22T13:31:36Z","title_canon_sha256":"f6d4da02e756c5e04779be171889d5734b86ab855e5bccbefe0c4e17f53064db"},"schema_version":"1.0","source":{"id":"1505.06068","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.06068","created_at":"2026-05-18T01:35:00Z"},{"alias_kind":"arxiv_version","alias_value":"1505.06068v2","created_at":"2026-05-18T01:35:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.06068","created_at":"2026-05-18T01:35:00Z"},{"alias_kind":"pith_short_12","alias_value":"ODU6UN6ZZZY7","created_at":"2026-05-18T12:29:34Z"},{"alias_kind":"pith_short_16","alias_value":"ODU6UN6ZZZY73VER","created_at":"2026-05-18T12:29:34Z"},{"alias_kind":"pith_short_8","alias_value":"ODU6UN6Z","created_at":"2026-05-18T12:29:34Z"}],"graph_snapshots":[{"event_id":"sha256:5c120d389eb842b2f385c97ff679e0344df88e06ed95d6ab435e10069bcd2a2e","target":"graph","created_at":"2026-05-18T01:35:00Z","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":"We report on magnetic field measurements made in the innermost coma of 67P/Churyumov-Gerasimenko in its low activity state. Quasi-coherent, large-amplitude ($\\delta B/B \\sim 1$), compressional magnetic field oscillations at $\\sim$ 40 mHz dominate the immediate plasma environment of the nucleus. This differs from previously studied comet-interaction regions where waves at the cometary ion gyro-frequencies are the main feature. Thus classical pick-up ion driven instabilities are unable to explain the observations. We propose a cross-field current instability associated with newborn cometary ion ","authors_text":"A. Eriksson, B. Stoll, B. T. Tsurutani, C. Carr, C. Goetz, C.Koenders, C. Perschke, C. Vallat, D. Fruehauff, E. Cupido, H. Nilsson, H.-U. Auster, I. Richter, J. Burch, J.-P. Lebreton, K. Altwegg, K.-H. Glassmeier, K. Szegoe, M. Rubin, M. Volwerk, P. Heinisch, P. Henri, P. Mokashi, R. Goldstein, U. Motschmann, Z. Nemeth","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.space-ph","submitted_at":"2015-05-22T13:31:36Z","title":"Observation of a New Type of Low Frequency Waves at Comet 67P/Churyumov-Gerasimenko"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.06068","kind":"arxiv","version":2},"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:d87243bcf4df0f645c22d256edd66766c7a707043a8da2bb27326a9da7ba2035","target":"record","created_at":"2026-05-18T01:35:00Z","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":"131b93255f7ef7fd061818b19a78cf2d2c0738bab7cbbfab548b7d45c1ce04cd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.space-ph","submitted_at":"2015-05-22T13:31:36Z","title_canon_sha256":"f6d4da02e756c5e04779be171889d5734b86ab855e5bccbefe0c4e17f53064db"},"schema_version":"1.0","source":{"id":"1505.06068","kind":"arxiv","version":2}},"canonical_sha256":"70e9ea37d9ce71fdd491306f880ace7702515bd95386e6e70df1e6a5fc34dab6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"70e9ea37d9ce71fdd491306f880ace7702515bd95386e6e70df1e6a5fc34dab6","first_computed_at":"2026-05-18T01:35:00.568664Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:00.568664Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BeUlG5ieheIrONlXB+tkUOF/txRxoVa/y5yeNpwq6hh9vFtIhag7oo/O18WQl3b2EyK/K4iYNTmJ9UeMiLfiAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:00.569277Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.06068","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d87243bcf4df0f645c22d256edd66766c7a707043a8da2bb27326a9da7ba2035","sha256:5c120d389eb842b2f385c97ff679e0344df88e06ed95d6ab435e10069bcd2a2e"],"state_sha256":"1d5f745f15c522525ff85ad3ffd02ae91dcf00f423a202e164165f5930183792"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bW5ykeiqBy1mvP6/4B7ewRd50Xa1pNkXksYNL/PaGBG/cPbYFvpNs4jVFrI68o8TVmSgvyAIiR3HEq70CFLlDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T14:40:29.104953Z","bundle_sha256":"8132671a2b2f4b50b21234266e452f317fbd955f7583419c919ebf94b63b3a3c"}}