{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:3HIP2WLTD2JX4G6EXI5KGMIGWA","short_pith_number":"pith:3HIP2WLT","canonical_record":{"source":{"id":"1905.01651","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-05T11:05:00Z","cross_cats_sorted":[],"title_canon_sha256":"e6f65d115e18aba6902e28f082243ca8eeccc8a969f77851778120fe2606523d","abstract_canon_sha256":"01a254f728f2718c93312c506847feaaf5c5cfa62683681e9926c495ca799abe"},"schema_version":"1.0"},"canonical_sha256":"d9d0fd59731e937e1bc4ba3aa33106b007db798faef3d60075bebcaca38b58ef","source":{"kind":"arxiv","id":"1905.01651","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.01651","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"arxiv_version","alias_value":"1905.01651v1","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.01651","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"pith_short_12","alias_value":"3HIP2WLTD2JX","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"3HIP2WLTD2JX4G6E","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"3HIP2WLT","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:3HIP2WLTD2JX4G6EXI5KGMIGWA","target":"record","payload":{"canonical_record":{"source":{"id":"1905.01651","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-05T11:05:00Z","cross_cats_sorted":[],"title_canon_sha256":"e6f65d115e18aba6902e28f082243ca8eeccc8a969f77851778120fe2606523d","abstract_canon_sha256":"01a254f728f2718c93312c506847feaaf5c5cfa62683681e9926c495ca799abe"},"schema_version":"1.0"},"canonical_sha256":"d9d0fd59731e937e1bc4ba3aa33106b007db798faef3d60075bebcaca38b58ef","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:19.420107Z","signature_b64":"RXo0E9zB2mYY4eGHMHOO2heU0rDKlPM6VwcSqsFOK56tvip33WCuUUDH87ZlB74O0bXNdLKw6CARM3sxbErEBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d9d0fd59731e937e1bc4ba3aa33106b007db798faef3d60075bebcaca38b58ef","last_reissued_at":"2026-05-17T23:42:19.419651Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:19.419651Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.01651","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":"2026-05-17T23:42:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b8gShAQrN4VNHMURAwtwnsXgdG/a8f4LOrmpFKJBIMzicxu6rjfxHYV0E8oCB18GJ4U/hkrC6CuzeTG8gqueCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:04:46.927994Z"},"content_sha256":"b8a1ced18d39fadb406f58e6d724d531c8793cac9b72ba1d3bd9da85882287c2","schema_version":"1.0","event_id":"sha256:b8a1ced18d39fadb406f58e6d724d531c8793cac9b72ba1d3bd9da85882287c2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:3HIP2WLTD2JX4G6EXI5KGMIGWA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multi-frequency scatter broadening evolution of pulsars - II. Scatter broadening of nearby pulsars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Bhal Chandra Joshi, M. A. Krishnakumar, P. K. Manoharan, Yogesh Maan","submitted_at":"2019-05-05T11:05:00Z","abstract_excerpt":"We present multi-frequency scatter broadening evolution of 29 pulsars observed with the LOw Frequency ARray (LOFAR) and Long Wavelength Array (LWA). We conducted new observations using LOFAR Low Band Antennae (LBA) as well as utilized the archival data from LOFAR and LWA. This study has increased the total of all multi-frequency or wide-band scattering measurements up to a dispersion measure (DM) of 150~pc\\,cm$^{-3}$ by 60\\%. The scatter broadening timescale ($\\tau_{sc}$) measurements at different frequencies are often combined by scaling them to a common reference frequency of 1\\,GHz. Using o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.01651","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":"2026-05-17T23:42:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C+G29x280JVr9l6be2PSV63nTBwHhj97GTju6l+dJHjS3Z1yHIB1DDFWz+mhj3+Tf3tjfxPufEy354BnYpN0Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:04:46.928734Z"},"content_sha256":"8edb7b09e6b4e6908ccdfe1d87f9e14b0d1e7ebc3e8661b0cb47b3a65ba3b8ea","schema_version":"1.0","event_id":"sha256:8edb7b09e6b4e6908ccdfe1d87f9e14b0d1e7ebc3e8661b0cb47b3a65ba3b8ea"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3HIP2WLTD2JX4G6EXI5KGMIGWA/bundle.json","state_url":"https://pith.science/pith/3HIP2WLTD2JX4G6EXI5KGMIGWA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3HIP2WLTD2JX4G6EXI5KGMIGWA/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":"2026-05-29T15:04:46Z","links":{"resolver":"https://pith.science/pith/3HIP2WLTD2JX4G6EXI5KGMIGWA","bundle":"https://pith.science/pith/3HIP2WLTD2JX4G6EXI5KGMIGWA/bundle.json","state":"https://pith.science/pith/3HIP2WLTD2JX4G6EXI5KGMIGWA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3HIP2WLTD2JX4G6EXI5KGMIGWA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:3HIP2WLTD2JX4G6EXI5KGMIGWA","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":"01a254f728f2718c93312c506847feaaf5c5cfa62683681e9926c495ca799abe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-05T11:05:00Z","title_canon_sha256":"e6f65d115e18aba6902e28f082243ca8eeccc8a969f77851778120fe2606523d"},"schema_version":"1.0","source":{"id":"1905.01651","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.01651","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"arxiv_version","alias_value":"1905.01651v1","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.01651","created_at":"2026-05-17T23:42:19Z"},{"alias_kind":"pith_short_12","alias_value":"3HIP2WLTD2JX","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"3HIP2WLTD2JX4G6E","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"3HIP2WLT","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:8edb7b09e6b4e6908ccdfe1d87f9e14b0d1e7ebc3e8661b0cb47b3a65ba3b8ea","target":"graph","created_at":"2026-05-17T23:42:19Z","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 multi-frequency scatter broadening evolution of 29 pulsars observed with the LOw Frequency ARray (LOFAR) and Long Wavelength Array (LWA). We conducted new observations using LOFAR Low Band Antennae (LBA) as well as utilized the archival data from LOFAR and LWA. This study has increased the total of all multi-frequency or wide-band scattering measurements up to a dispersion measure (DM) of 150~pc\\,cm$^{-3}$ by 60\\%. The scatter broadening timescale ($\\tau_{sc}$) measurements at different frequencies are often combined by scaling them to a common reference frequency of 1\\,GHz. Using o","authors_text":"Bhal Chandra Joshi, M. A. Krishnakumar, P. K. Manoharan, Yogesh Maan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-05T11:05:00Z","title":"Multi-frequency scatter broadening evolution of pulsars - II. Scatter broadening of nearby pulsars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.01651","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:b8a1ced18d39fadb406f58e6d724d531c8793cac9b72ba1d3bd9da85882287c2","target":"record","created_at":"2026-05-17T23:42:19Z","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":"01a254f728f2718c93312c506847feaaf5c5cfa62683681e9926c495ca799abe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-05-05T11:05:00Z","title_canon_sha256":"e6f65d115e18aba6902e28f082243ca8eeccc8a969f77851778120fe2606523d"},"schema_version":"1.0","source":{"id":"1905.01651","kind":"arxiv","version":1}},"canonical_sha256":"d9d0fd59731e937e1bc4ba3aa33106b007db798faef3d60075bebcaca38b58ef","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d9d0fd59731e937e1bc4ba3aa33106b007db798faef3d60075bebcaca38b58ef","first_computed_at":"2026-05-17T23:42:19.419651Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:19.419651Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RXo0E9zB2mYY4eGHMHOO2heU0rDKlPM6VwcSqsFOK56tvip33WCuUUDH87ZlB74O0bXNdLKw6CARM3sxbErEBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:19.420107Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.01651","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b8a1ced18d39fadb406f58e6d724d531c8793cac9b72ba1d3bd9da85882287c2","sha256:8edb7b09e6b4e6908ccdfe1d87f9e14b0d1e7ebc3e8661b0cb47b3a65ba3b8ea"],"state_sha256":"f384ed30f265abbe9cfc93dc4e5fc26a9c992c2e97bf07b73418d457ac3bafc2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JBId+OivQBJ8agL+JVKhaJT+OAKNWnxDop5Y+gC5/Nh8DKVYeBZIHLlsYbXResRGVa7PGyCbRMv0mhLRqEygDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T15:04:46.931845Z","bundle_sha256":"09cdc8fc92c3d3eb8f6d5e4390919f8b6bbcb16d7cb2a0d9271bdfd8b23ee073"}}