{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1995:DUVWD7KHZNCOW4GYQ6QUWWLT7D","short_pith_number":"pith:DUVWD7KH","canonical_record":{"source":{"id":"astro-ph/9502049","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1995-02-08T21:05:23Z","cross_cats_sorted":[],"title_canon_sha256":"636ee9f93730874fd08f37ca1803d5934d7f33a9213a7c710d6f44f22f353913","abstract_canon_sha256":"19512171d9f2bb2764db8310e3b05ee75b637756ff7df228e6ec461d10a8a280"},"schema_version":"1.0"},"canonical_sha256":"1d2b61fd47cb44eb70d887a14b5973f8ff9c5eb4d52826b3c3325bc69a2faf89","source":{"kind":"arxiv","id":"astro-ph/9502049","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9502049","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9502049v1","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9502049","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"pith_short_12","alias_value":"DUVWD7KHZNCO","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"DUVWD7KHZNCOW4GY","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"DUVWD7KH","created_at":"2026-05-18T12:25:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1995:DUVWD7KHZNCOW4GYQ6QUWWLT7D","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9502049","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1995-02-08T21:05:23Z","cross_cats_sorted":[],"title_canon_sha256":"636ee9f93730874fd08f37ca1803d5934d7f33a9213a7c710d6f44f22f353913","abstract_canon_sha256":"19512171d9f2bb2764db8310e3b05ee75b637756ff7df228e6ec461d10a8a280"},"schema_version":"1.0"},"canonical_sha256":"1d2b61fd47cb44eb70d887a14b5973f8ff9c5eb4d52826b3c3325bc69a2faf89","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:42.303669Z","signature_b64":"dE2Xcbk307yislG6Zs3mEnBEU1xkpy2JJv/vpgvrqMA4YNPR6975bwZjTTgoHyUXAw1/jPzY3Oc3DGDVug+QDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1d2b61fd47cb44eb70d887a14b5973f8ff9c5eb4d52826b3c3325bc69a2faf89","last_reissued_at":"2026-05-18T01:07:42.303107Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:42.303107Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9502049","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":"2026-05-18T01:07:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dl8Ej3iRuUBIOI+L+vW9BmGDpxjZ4UOnDllYQjB8RBUX0fLjBSR5KUJ+sfWIYZrgJW1fcDf6T7GhnKiforpZDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T13:21:49.362336Z"},"content_sha256":"974afe80d9b3b45f9f7bd82b57f7e437831c76f0dc5487c0828fcecd55566db0","schema_version":"1.0","event_id":"sha256:974afe80d9b3b45f9f7bd82b57f7e437831c76f0dc5487c0828fcecd55566db0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1995:DUVWD7KHZNCOW4GYQ6QUWWLT7D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Parker-Shearing instability in azimuthaly magnetized discs","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Michel Tagger, Thierry Foglizzo","submitted_at":"1995-02-08T21:05:23Z","abstract_excerpt":"We describe the effects of both magnetic buoyancy and differential rotation on a disc of isothermal gas embedded in a purely azimuthal magnetic field, in order to study the evolution and interplay of Parker and shearing instabilities. Both instabilities occur on the slow MHD branch of the dispersion relation, and can affect the same waves. We put a stress on the natural polarization properties of the slow MHD waves to get a better understanding of the physics involved. The mechanism of the shearing instability is described in details. Waves with a vertical wavelength shorter than the scale hei"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9502049","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":"2026-05-18T01:07:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jARzAccILtLkbLMD8YIOfz7O7YafjcvEHscYZGoQxVx2yL6Y4e58vbeNOhu4GxUIYG6bx5GbdwLlaP6mJoomAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T13:21:49.362686Z"},"content_sha256":"d01be07ea162aadcf6e06878b34da1364e1b2c2fbe1e5b6d221e3671eaf0afd7","schema_version":"1.0","event_id":"sha256:d01be07ea162aadcf6e06878b34da1364e1b2c2fbe1e5b6d221e3671eaf0afd7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DUVWD7KHZNCOW4GYQ6QUWWLT7D/bundle.json","state_url":"https://pith.science/pith/DUVWD7KHZNCOW4GYQ6QUWWLT7D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DUVWD7KHZNCOW4GYQ6QUWWLT7D/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":"2026-06-05T13:21:49Z","links":{"resolver":"https://pith.science/pith/DUVWD7KHZNCOW4GYQ6QUWWLT7D","bundle":"https://pith.science/pith/DUVWD7KHZNCOW4GYQ6QUWWLT7D/bundle.json","state":"https://pith.science/pith/DUVWD7KHZNCOW4GYQ6QUWWLT7D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DUVWD7KHZNCOW4GYQ6QUWWLT7D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:DUVWD7KHZNCOW4GYQ6QUWWLT7D","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":"19512171d9f2bb2764db8310e3b05ee75b637756ff7df228e6ec461d10a8a280","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1995-02-08T21:05:23Z","title_canon_sha256":"636ee9f93730874fd08f37ca1803d5934d7f33a9213a7c710d6f44f22f353913"},"schema_version":"1.0","source":{"id":"astro-ph/9502049","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9502049","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9502049v1","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9502049","created_at":"2026-05-18T01:07:42Z"},{"alias_kind":"pith_short_12","alias_value":"DUVWD7KHZNCO","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"DUVWD7KHZNCOW4GY","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"DUVWD7KH","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:d01be07ea162aadcf6e06878b34da1364e1b2c2fbe1e5b6d221e3671eaf0afd7","target":"graph","created_at":"2026-05-18T01:07:42Z","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 describe the effects of both magnetic buoyancy and differential rotation on a disc of isothermal gas embedded in a purely azimuthal magnetic field, in order to study the evolution and interplay of Parker and shearing instabilities. Both instabilities occur on the slow MHD branch of the dispersion relation, and can affect the same waves. We put a stress on the natural polarization properties of the slow MHD waves to get a better understanding of the physics involved. The mechanism of the shearing instability is described in details. Waves with a vertical wavelength shorter than the scale hei","authors_text":"Michel Tagger, Thierry Foglizzo","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1995-02-08T21:05:23Z","title":"The Parker-Shearing instability in azimuthaly magnetized discs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9502049","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":"sha256:974afe80d9b3b45f9f7bd82b57f7e437831c76f0dc5487c0828fcecd55566db0","target":"record","created_at":"2026-05-18T01:07:42Z","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":"19512171d9f2bb2764db8310e3b05ee75b637756ff7df228e6ec461d10a8a280","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1995-02-08T21:05:23Z","title_canon_sha256":"636ee9f93730874fd08f37ca1803d5934d7f33a9213a7c710d6f44f22f353913"},"schema_version":"1.0","source":{"id":"astro-ph/9502049","kind":"arxiv","version":1}},"canonical_sha256":"1d2b61fd47cb44eb70d887a14b5973f8ff9c5eb4d52826b3c3325bc69a2faf89","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1d2b61fd47cb44eb70d887a14b5973f8ff9c5eb4d52826b3c3325bc69a2faf89","first_computed_at":"2026-05-18T01:07:42.303107Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:42.303107Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dE2Xcbk307yislG6Zs3mEnBEU1xkpy2JJv/vpgvrqMA4YNPR6975bwZjTTgoHyUXAw1/jPzY3Oc3DGDVug+QDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:42.303669Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9502049","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:974afe80d9b3b45f9f7bd82b57f7e437831c76f0dc5487c0828fcecd55566db0","sha256:d01be07ea162aadcf6e06878b34da1364e1b2c2fbe1e5b6d221e3671eaf0afd7"],"state_sha256":"123c8cc06bbeebae1a287e2de536ff362449e05a7d5eaee1d44b63f35819efda"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sgmYvxKF457zvv89TQ4WTXTJdH+UtTIAHfFIlrwQ3X/ldbUwqz3JpEUn/xuTyGD2Uk/4OjShVVpnlC7yVKuYAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T13:21:49.364562Z","bundle_sha256":"8acc76f610a66935e445cfd18b419db28880a2b2af0c0fe0646c53c196133aa3"}}