{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:CNGDS3LXUS7D7FMFEKAYTP7VAF","short_pith_number":"pith:CNGDS3LX","canonical_record":{"source":{"id":"1908.00010","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-07-31T18:00:01Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"ed59f95d2bb36fe2337adf92fadd10a00703b78cb9fb889489a1c0e1b91badab","abstract_canon_sha256":"4e238401d0155f3fd4caf09692743b22395f9f14153874aedfc29651d66e53f8"},"schema_version":"1.0"},"canonical_sha256":"134c396d77a4be3f9585228189bff501438adacd4986ce6ee3bf659f3cdfaa04","source":{"kind":"arxiv","id":"1908.00010","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.00010","created_at":"2026-07-05T00:21:35Z"},{"alias_kind":"arxiv_version","alias_value":"1908.00010v2","created_at":"2026-07-05T00:21:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.00010","created_at":"2026-07-05T00:21:35Z"},{"alias_kind":"pith_short_12","alias_value":"CNGDS3LXUS7D","created_at":"2026-07-05T00:21:35Z"},{"alias_kind":"pith_short_16","alias_value":"CNGDS3LXUS7D7FMF","created_at":"2026-07-05T00:21:35Z"},{"alias_kind":"pith_short_8","alias_value":"CNGDS3LX","created_at":"2026-07-05T00:21:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:CNGDS3LXUS7D7FMFEKAYTP7VAF","target":"record","payload":{"canonical_record":{"source":{"id":"1908.00010","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-07-31T18:00:01Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"ed59f95d2bb36fe2337adf92fadd10a00703b78cb9fb889489a1c0e1b91badab","abstract_canon_sha256":"4e238401d0155f3fd4caf09692743b22395f9f14153874aedfc29651d66e53f8"},"schema_version":"1.0"},"canonical_sha256":"134c396d77a4be3f9585228189bff501438adacd4986ce6ee3bf659f3cdfaa04","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:21:35.902351Z","signature_b64":"Oq+YHOdaACXwKq6+O533uVXr+cEeJJkqAOEDHy+/HXdJQDxSAeEQK6nA6gTe0sGgP677T8JW/kJ99YqDJhdXDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"134c396d77a4be3f9585228189bff501438adacd4986ce6ee3bf659f3cdfaa04","last_reissued_at":"2026-07-05T00:21:35.901795Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:21:35.901795Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.00010","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":"2026-07-05T00:21:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ODkejJ7JVz7iz0QCseVq/avdGnKVtPuX3axUxrh2EivwzqbWVntVOsGstsXtcHWUzsm5Hp1+Kw26F4JCAjSpDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T14:09:54.559729Z"},"content_sha256":"25e33542453643512ee2da0c69009095e7e114d1ba53de5009a7f2563b734fff","schema_version":"1.0","event_id":"sha256:25e33542453643512ee2da0c69009095e7e114d1ba53de5009a7f2563b734fff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:CNGDS3LXUS7D7FMFEKAYTP7VAF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Instability of twisted magnetar magnetospheres","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"03690, (2) Departament de Fisica Aplicada, 46100, Alicante, Burjassot, J. A. Pons (2), J. F. Mahlmann (1), M. A. Aloy (1), P. Cerd\\'a-Dur\\'an ((1) Departament d'Astronomia i Astrof\\'isica, Spain, Spain), T. Akg\\\"un (2), Universitat d'Alacant, Universitat de Val\\`encia","submitted_at":"2019-07-31T18:00:01Z","abstract_excerpt":"We present three-dimensional force-free electrodynamics simulations of magnetar magnetospheres that demonstrate the instability of certain degenerate, high energy equilibrium solutions of the Grad-Shafranov equation. This result indicates the existence of an unstable branch of twisted magnetospheric solutions and allows to formulate an instability criterion. The rearrangement of magnetic field lines as a consequence of this instability triggers the dissipation of up to 30% of the magnetospheric energy on a thin layer above the magnetar surface. During this process, we predict an increase of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.00010","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.00010/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":"2026-07-05T00:21:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nOvI0a//72EAj0hDN4BBa7JVdjoxP4Apx80kEfDyEJrzBOy8t+bRU45LaZY3U7tgKxLO5uITnVZ0rDSQONAHDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T14:09:54.560239Z"},"content_sha256":"13fd64ff63b8ea8d954613986e4a407994e8507ae903e8e38aa385d69ba42d69","schema_version":"1.0","event_id":"sha256:13fd64ff63b8ea8d954613986e4a407994e8507ae903e8e38aa385d69ba42d69"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CNGDS3LXUS7D7FMFEKAYTP7VAF/bundle.json","state_url":"https://pith.science/pith/CNGDS3LXUS7D7FMFEKAYTP7VAF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CNGDS3LXUS7D7FMFEKAYTP7VAF/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":"2026-08-18T14:09:54Z","links":{"resolver":"https://pith.science/pith/CNGDS3LXUS7D7FMFEKAYTP7VAF","bundle":"https://pith.science/pith/CNGDS3LXUS7D7FMFEKAYTP7VAF/bundle.json","state":"https://pith.science/pith/CNGDS3LXUS7D7FMFEKAYTP7VAF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CNGDS3LXUS7D7FMFEKAYTP7VAF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:CNGDS3LXUS7D7FMFEKAYTP7VAF","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":"4e238401d0155f3fd4caf09692743b22395f9f14153874aedfc29651d66e53f8","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-07-31T18:00:01Z","title_canon_sha256":"ed59f95d2bb36fe2337adf92fadd10a00703b78cb9fb889489a1c0e1b91badab"},"schema_version":"1.0","source":{"id":"1908.00010","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.00010","created_at":"2026-07-05T00:21:35Z"},{"alias_kind":"arxiv_version","alias_value":"1908.00010v2","created_at":"2026-07-05T00:21:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.00010","created_at":"2026-07-05T00:21:35Z"},{"alias_kind":"pith_short_12","alias_value":"CNGDS3LXUS7D","created_at":"2026-07-05T00:21:35Z"},{"alias_kind":"pith_short_16","alias_value":"CNGDS3LXUS7D7FMF","created_at":"2026-07-05T00:21:35Z"},{"alias_kind":"pith_short_8","alias_value":"CNGDS3LX","created_at":"2026-07-05T00:21:35Z"}],"graph_snapshots":[{"event_id":"sha256:13fd64ff63b8ea8d954613986e4a407994e8507ae903e8e38aa385d69ba42d69","target":"graph","created_at":"2026-07-05T00:21:35Z","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/1908.00010/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present three-dimensional force-free electrodynamics simulations of magnetar magnetospheres that demonstrate the instability of certain degenerate, high energy equilibrium solutions of the Grad-Shafranov equation. This result indicates the existence of an unstable branch of twisted magnetospheric solutions and allows to formulate an instability criterion. The rearrangement of magnetic field lines as a consequence of this instability triggers the dissipation of up to 30% of the magnetospheric energy on a thin layer above the magnetar surface. During this process, we predict an increase of th","authors_text":"03690, (2) Departament de Fisica Aplicada, 46100, Alicante, Burjassot, J. A. Pons (2), J. F. Mahlmann (1), M. A. Aloy (1), P. Cerd\\'a-Dur\\'an ((1) Departament d'Astronomia i Astrof\\'isica, Spain, Spain), T. Akg\\\"un (2), Universitat d'Alacant, Universitat de Val\\`encia","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-07-31T18:00:01Z","title":"Instability of twisted magnetar magnetospheres"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.00010","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":"sha256:25e33542453643512ee2da0c69009095e7e114d1ba53de5009a7f2563b734fff","target":"record","created_at":"2026-07-05T00:21:35Z","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":"4e238401d0155f3fd4caf09692743b22395f9f14153874aedfc29651d66e53f8","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-07-31T18:00:01Z","title_canon_sha256":"ed59f95d2bb36fe2337adf92fadd10a00703b78cb9fb889489a1c0e1b91badab"},"schema_version":"1.0","source":{"id":"1908.00010","kind":"arxiv","version":2}},"canonical_sha256":"134c396d77a4be3f9585228189bff501438adacd4986ce6ee3bf659f3cdfaa04","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"134c396d77a4be3f9585228189bff501438adacd4986ce6ee3bf659f3cdfaa04","first_computed_at":"2026-07-05T00:21:35.901795Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:21:35.901795Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Oq+YHOdaACXwKq6+O533uVXr+cEeJJkqAOEDHy+/HXdJQDxSAeEQK6nA6gTe0sGgP677T8JW/kJ99YqDJhdXDg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:21:35.902351Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.00010","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:25e33542453643512ee2da0c69009095e7e114d1ba53de5009a7f2563b734fff","sha256:13fd64ff63b8ea8d954613986e4a407994e8507ae903e8e38aa385d69ba42d69"],"state_sha256":"55d04904d2039116dee60b6ed76617241386d5405fa0658668cc41700da8a3dd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WjSUcEKTPH9Vq7TMf2V1nhzhxQbCsrrptgL8goZRJsb5ttTM9Q8+hqwafIhMhC4fzpDaZ3gP6CifpA+NGde5CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T14:09:54.564756Z","bundle_sha256":"09c44698392df95697a142851fd20a14bbc99b50a753ad93617200270e2c78e2"}}