{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:J4KL263RR3SBRNOYBTTD3J7WWM","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":"b8908b69371a73703b7d5da7185f4132cfd565d064558001b75bd296bc30da4e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-07-28T20:00:04Z","title_canon_sha256":"ae104aea383131c190241b90de05c9d9ffbeaf0d695cbb6a9a2fa5d51e3205d6"},"schema_version":"1.0","source":{"id":"1107.5812","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.5812","created_at":"2026-05-18T02:01:06Z"},{"alias_kind":"arxiv_version","alias_value":"1107.5812v1","created_at":"2026-05-18T02:01:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.5812","created_at":"2026-05-18T02:01:06Z"},{"alias_kind":"pith_short_12","alias_value":"J4KL263RR3SB","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_16","alias_value":"J4KL263RR3SBRNOY","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_8","alias_value":"J4KL263R","created_at":"2026-05-18T12:26:32Z"}],"graph_snapshots":[{"event_id":"sha256:0096e4a739c4198866d21761d993fc39803584cc93120a71d68dcf1229a6fe7e","target":"graph","created_at":"2026-05-18T02:01:06Z","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":"Rapid variability on a time scale much faster than the light-crossing time of the central supermassive black hole has been seen in TeV emission from the blazar PKS 2155-304. The most plausible explanation of this puzzling observation is that the radiating fluid in the relativistic jet is divided into a large number of sub-regions which move in random directions with relativistic speeds. We consider two versions of this \"jets in a jet\" model. In the first, the \"subjets\" model, stationary regions in the mean jet frame emit relativistic subjets that produce the observed radiation. The variability","authors_text":"Ramesh Narayan, Tsvi Piran","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-07-28T20:00:04Z","title":"Variability in Blazars: Clues from PKS 2155-304"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.5812","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":"sha256:02615f196285bf9e6a3f5e90138f50a3a37e407d9e109b8523e6249872222966","target":"record","created_at":"2026-05-18T02:01:06Z","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":"b8908b69371a73703b7d5da7185f4132cfd565d064558001b75bd296bc30da4e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-07-28T20:00:04Z","title_canon_sha256":"ae104aea383131c190241b90de05c9d9ffbeaf0d695cbb6a9a2fa5d51e3205d6"},"schema_version":"1.0","source":{"id":"1107.5812","kind":"arxiv","version":1}},"canonical_sha256":"4f14bd7b718ee418b5d80ce63da7f6b31ce690a03860cba38ae7b0f86f493aff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4f14bd7b718ee418b5d80ce63da7f6b31ce690a03860cba38ae7b0f86f493aff","first_computed_at":"2026-05-18T02:01:06.148207Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:06.148207Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rXPeSwXOuwYaGCZi01BzDltJIetP0nxkuOd7AakNc/gaC8KU8cvfJZVGkNwLES2hKwdLfZY9bWJzCZUlQv/8Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:06.148786Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.5812","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:02615f196285bf9e6a3f5e90138f50a3a37e407d9e109b8523e6249872222966","sha256:0096e4a739c4198866d21761d993fc39803584cc93120a71d68dcf1229a6fe7e"],"state_sha256":"d90e003dea33b4711f34f7892af10d2ee4029d234302cb7c4d9d1c6dfe38ebc8"}