{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:YXP4N2VCEFP5JFSYR2Z4RI5DZY","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":"a3b1a6305702d637f4f43b83a03a7ddd8d31f87ee563d5d0679dd6934ad3bb13","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"1996-07-15T15:52:51Z","title_canon_sha256":"bac2c9e7d957e9c2bacfdce44b254da29c756fed1b66cd3b7cf81f046d6b1475"},"schema_version":"1.0","source":{"id":"gr-qc/9607034","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/9607034","created_at":"2026-05-18T04:35:34Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/9607034v1","created_at":"2026-05-18T04:35:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/9607034","created_at":"2026-05-18T04:35:34Z"},{"alias_kind":"pith_short_12","alias_value":"YXP4N2VCEFP5","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"YXP4N2VCEFP5JFSY","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"YXP4N2VC","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:5cdb99e8a96e9806cb454da913b35a1f3374d0f772e5769bf7e1598795077b2c","target":"graph","created_at":"2026-05-18T04:35:34Z","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 examine the interactions of a black hole with a massless scalar field using a coordinate system which extends ingoing Eddington-Finkelstein coordinates to dynamic spherically symmetric-spacetimes. We avoid problems with the singularity by excising the region of the black hole interior to the apparent horizon. We use a second-order finite difference scheme to solve the equations. The resulting program is stable and convergent and will run forever without problems. We are able to observe quasi-normal ringing and power-law tails as well an interesting nonlinear feature.","authors_text":"Matthew W. Choptuik, Robert L. Marsa","cross_cats":[],"headline":"","license":"","primary_cat":"gr-qc","submitted_at":"1996-07-15T15:52:51Z","title":"Black Hole--Scalar Field Interactions in Spherical Symmetry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/9607034","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":"sha256:248a5e55e74e56f15e7a372bbb672361c02d3f91b1a217ee3195a326d5c8e52e","target":"record","created_at":"2026-05-18T04:35:34Z","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":"a3b1a6305702d637f4f43b83a03a7ddd8d31f87ee563d5d0679dd6934ad3bb13","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"1996-07-15T15:52:51Z","title_canon_sha256":"bac2c9e7d957e9c2bacfdce44b254da29c756fed1b66cd3b7cf81f046d6b1475"},"schema_version":"1.0","source":{"id":"gr-qc/9607034","kind":"arxiv","version":1}},"canonical_sha256":"c5dfc6eaa2215fd496588eb3c8a3a3ce3d5161a24bd9268307d3b1cbb06dcbfe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c5dfc6eaa2215fd496588eb3c8a3a3ce3d5161a24bd9268307d3b1cbb06dcbfe","first_computed_at":"2026-05-18T04:35:34.121995Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:35:34.121995Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OHCpMHvKjkZsDjpazT+Ee82KkJh1bAf9X1IeJaAi6rint/vSmGL5/+NIOs2gL10q5omWARW+HGM77H9G4MuhDg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:35:34.122571Z","signed_message":"canonical_sha256_bytes"},"source_id":"gr-qc/9607034","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:248a5e55e74e56f15e7a372bbb672361c02d3f91b1a217ee3195a326d5c8e52e","sha256:5cdb99e8a96e9806cb454da913b35a1f3374d0f772e5769bf7e1598795077b2c"],"state_sha256":"2157b5c34c5e9f0948508946f488856a10e4b1a52283f5e1082bc4c01f0c15df"}