{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:RDVC5W3S4LEHPDXVXVDXAVU5D4","short_pith_number":"pith:RDVC5W3S","canonical_record":{"source":{"id":"1212.1173","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-12-05T21:01:50Z","cross_cats_sorted":[],"title_canon_sha256":"d4e24aaecfa10c3fa8c5bd3ff5bc8ac653de287341c3122bc2d174a64188004e","abstract_canon_sha256":"ff7a67b11dac7993ef5b84f7e6cd902b7d131d4f910f57ff406b032714026a72"},"schema_version":"1.0"},"canonical_sha256":"88ea2edb72e2c8778ef5bd4770569d1f20b6b3e54c13fe473669e40ce9c653e5","source":{"kind":"arxiv","id":"1212.1173","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.1173","created_at":"2026-05-18T01:52:47Z"},{"alias_kind":"arxiv_version","alias_value":"1212.1173v1","created_at":"2026-05-18T01:52:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.1173","created_at":"2026-05-18T01:52:47Z"},{"alias_kind":"pith_short_12","alias_value":"RDVC5W3S4LEH","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RDVC5W3S4LEHPDXV","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RDVC5W3S","created_at":"2026-05-18T12:27:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:RDVC5W3S4LEHPDXVXVDXAVU5D4","target":"record","payload":{"canonical_record":{"source":{"id":"1212.1173","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-12-05T21:01:50Z","cross_cats_sorted":[],"title_canon_sha256":"d4e24aaecfa10c3fa8c5bd3ff5bc8ac653de287341c3122bc2d174a64188004e","abstract_canon_sha256":"ff7a67b11dac7993ef5b84f7e6cd902b7d131d4f910f57ff406b032714026a72"},"schema_version":"1.0"},"canonical_sha256":"88ea2edb72e2c8778ef5bd4770569d1f20b6b3e54c13fe473669e40ce9c653e5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:47.253570Z","signature_b64":"0kpmKhJoAgrAIOs37JBavJGPeFHQzOIh1C0TU4EocnJcyHIUjPQHGqkr841G4iSsyY0FRQg/7Pp+9qpHbxrrBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"88ea2edb72e2c8778ef5bd4770569d1f20b6b3e54c13fe473669e40ce9c653e5","last_reissued_at":"2026-05-18T01:52:47.253026Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:47.253026Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1212.1173","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":"2026-05-18T01:52:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uC/UikJUTUd75M9T0mVpP17NNeh3jAmSLXENbxc0I4MwTxM9jRHKHagxYfxjvu++fWaTeN+lBbkFyFFgtAxzCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T06:12:35.745626Z"},"content_sha256":"6480f8545269fbddbbac661d00bcb372318e00312644488d15fa92f266471eb8","schema_version":"1.0","event_id":"sha256:6480f8545269fbddbbac661d00bcb372318e00312644488d15fa92f266471eb8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:RDVC5W3S4LEHPDXVXVDXAVU5D4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radio Monitoring of the Tidal Disruption Event Swift J164449.3+573451. II. The Relativistic Jet Shuts Off and a Transition to Forward Shock X-ray/Radio Emission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Brunthaler, A. M. Soderberg, B. A. Zauderer, E. Berger, G. G. Pooley, M. F. Bietenholz, R. Margutti, R. Sari","submitted_at":"2012-12-05T21:01:50Z","abstract_excerpt":"We present continued multi-frequency radio observations of the relativistic tidal disruption event Sw1644+57 extending to dt~600 d. The data were obtained with the JVLA and AMI Large Array. We combine these data with public Swift/XRT and Chandra X-ray observations over the same time-frame to show that the jet has undergone a dramatic transition starting at ~500 d, with a sharp decline in the X-ray flux by about a factor of 170 on a timescale of dt/t<0.2. The rapid decline rules out a forward shock origin (direct or reprocessing) for the X-ray emission at <500 d, and instead points to internal "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.1173","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":"2026-05-18T01:52:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gNJ4qh0AZhbmEBDcs/HtCp/7jdb9sMv5+8iPh4JKRZzJNozGHBixJQmQHf8S1Uf9dnLtny7Jrmn11e90tnJTDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T06:12:35.745973Z"},"content_sha256":"bb0d4d820175940f89623db373de4fa20d48ac6adb3449e5d8ffbc1d74d3d5e9","schema_version":"1.0","event_id":"sha256:bb0d4d820175940f89623db373de4fa20d48ac6adb3449e5d8ffbc1d74d3d5e9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RDVC5W3S4LEHPDXVXVDXAVU5D4/bundle.json","state_url":"https://pith.science/pith/RDVC5W3S4LEHPDXVXVDXAVU5D4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RDVC5W3S4LEHPDXVXVDXAVU5D4/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":"2026-05-21T06:12:35Z","links":{"resolver":"https://pith.science/pith/RDVC5W3S4LEHPDXVXVDXAVU5D4","bundle":"https://pith.science/pith/RDVC5W3S4LEHPDXVXVDXAVU5D4/bundle.json","state":"https://pith.science/pith/RDVC5W3S4LEHPDXVXVDXAVU5D4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RDVC5W3S4LEHPDXVXVDXAVU5D4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:RDVC5W3S4LEHPDXVXVDXAVU5D4","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":"ff7a67b11dac7993ef5b84f7e6cd902b7d131d4f910f57ff406b032714026a72","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-12-05T21:01:50Z","title_canon_sha256":"d4e24aaecfa10c3fa8c5bd3ff5bc8ac653de287341c3122bc2d174a64188004e"},"schema_version":"1.0","source":{"id":"1212.1173","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.1173","created_at":"2026-05-18T01:52:47Z"},{"alias_kind":"arxiv_version","alias_value":"1212.1173v1","created_at":"2026-05-18T01:52:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.1173","created_at":"2026-05-18T01:52:47Z"},{"alias_kind":"pith_short_12","alias_value":"RDVC5W3S4LEH","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RDVC5W3S4LEHPDXV","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RDVC5W3S","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:bb0d4d820175940f89623db373de4fa20d48ac6adb3449e5d8ffbc1d74d3d5e9","target":"graph","created_at":"2026-05-18T01:52:47Z","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 present continued multi-frequency radio observations of the relativistic tidal disruption event Sw1644+57 extending to dt~600 d. The data were obtained with the JVLA and AMI Large Array. We combine these data with public Swift/XRT and Chandra X-ray observations over the same time-frame to show that the jet has undergone a dramatic transition starting at ~500 d, with a sharp decline in the X-ray flux by about a factor of 170 on a timescale of dt/t<0.2. The rapid decline rules out a forward shock origin (direct or reprocessing) for the X-ray emission at <500 d, and instead points to internal ","authors_text":"A. Brunthaler, A. M. Soderberg, B. A. Zauderer, E. Berger, G. G. Pooley, M. F. Bietenholz, R. Margutti, R. Sari","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-12-05T21:01:50Z","title":"Radio Monitoring of the Tidal Disruption Event Swift J164449.3+573451. II. The Relativistic Jet Shuts Off and a Transition to Forward Shock X-ray/Radio Emission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.1173","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":"sha256:6480f8545269fbddbbac661d00bcb372318e00312644488d15fa92f266471eb8","target":"record","created_at":"2026-05-18T01:52:47Z","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":"ff7a67b11dac7993ef5b84f7e6cd902b7d131d4f910f57ff406b032714026a72","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-12-05T21:01:50Z","title_canon_sha256":"d4e24aaecfa10c3fa8c5bd3ff5bc8ac653de287341c3122bc2d174a64188004e"},"schema_version":"1.0","source":{"id":"1212.1173","kind":"arxiv","version":1}},"canonical_sha256":"88ea2edb72e2c8778ef5bd4770569d1f20b6b3e54c13fe473669e40ce9c653e5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"88ea2edb72e2c8778ef5bd4770569d1f20b6b3e54c13fe473669e40ce9c653e5","first_computed_at":"2026-05-18T01:52:47.253026Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:47.253026Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0kpmKhJoAgrAIOs37JBavJGPeFHQzOIh1C0TU4EocnJcyHIUjPQHGqkr841G4iSsyY0FRQg/7Pp+9qpHbxrrBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:47.253570Z","signed_message":"canonical_sha256_bytes"},"source_id":"1212.1173","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6480f8545269fbddbbac661d00bcb372318e00312644488d15fa92f266471eb8","sha256:bb0d4d820175940f89623db373de4fa20d48ac6adb3449e5d8ffbc1d74d3d5e9"],"state_sha256":"bbd7d34adedae03c0118419494bf1376e7251424a87a7421e306cda20bd82235"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UyyqH1zlaJeOrqAvQUMcJhzxbkN+jm12mDSPYpGwyj6zyZq9VQKuvEtO2ySlR6Zj6Ugr+0XSmo/13PwpeJDLAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T06:12:35.747937Z","bundle_sha256":"c45ed22f93bd1545817934ba1302700a8bf724d6b47883d30668438d706be256"}}