{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:3SYC6RNMER766PU2M3YJ43BS6Y","short_pith_number":"pith:3SYC6RNM","canonical_record":{"source":{"id":"1809.09388","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-25T09:59:57Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"8c88158af286ea3356d33feacee51697153a4c954aba6d3068d6da7fa70368d1","abstract_canon_sha256":"063e1fcba541f77c5082cbab553a3a604d9af871a5820c83c84653ea9a985ecc"},"schema_version":"1.0"},"canonical_sha256":"dcb02f45ac247fef3e9a66f09e6c32f6005f390e94e5975aef99bfc6947a33c4","source":{"kind":"arxiv","id":"1809.09388","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.09388","created_at":"2026-05-17T23:54:34Z"},{"alias_kind":"arxiv_version","alias_value":"1809.09388v1","created_at":"2026-05-17T23:54:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.09388","created_at":"2026-05-17T23:54:34Z"},{"alias_kind":"pith_short_12","alias_value":"3SYC6RNMER76","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"3SYC6RNMER766PU2","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"3SYC6RNM","created_at":"2026-05-18T12:32:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:3SYC6RNMER766PU2M3YJ43BS6Y","target":"record","payload":{"canonical_record":{"source":{"id":"1809.09388","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-25T09:59:57Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"8c88158af286ea3356d33feacee51697153a4c954aba6d3068d6da7fa70368d1","abstract_canon_sha256":"063e1fcba541f77c5082cbab553a3a604d9af871a5820c83c84653ea9a985ecc"},"schema_version":"1.0"},"canonical_sha256":"dcb02f45ac247fef3e9a66f09e6c32f6005f390e94e5975aef99bfc6947a33c4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:34.151515Z","signature_b64":"Ide8EoDqIvTNcAVZkxyUnYaHpQ9XWwOnUXZyMZdFaPZLTdgSDSR40tcByMOACJohh5i9U6Px9x6Yfx9K6v09DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dcb02f45ac247fef3e9a66f09e6c32f6005f390e94e5975aef99bfc6947a33c4","last_reissued_at":"2026-05-17T23:54:34.150868Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:34.150868Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.09388","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":"2026-05-17T23:54:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zgrWGoqDIVFeugAEuPDu6h+9i48oocKrtTQbX6CQPagoqPtpdG0MpqCMIEGVVXZw/n4KACJWpFvRlIds3/nQDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T17:34:16.599922Z"},"content_sha256":"f83fb90ece4b02b123426cc362e0e182e69ac1f839110bf0d3ac8de606efa388","schema_version":"1.0","event_id":"sha256:f83fb90ece4b02b123426cc362e0e182e69ac1f839110bf0d3ac8de606efa388"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:3SYC6RNMER766PU2M3YJ43BS6Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interplanetary Scintillation with the Murchison Widefield Array V: An All-sky Survey of Compact Sources using a Modern Low-frequency Radio Telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.GA","authors_text":"E. M. Sadler, J-P. Macquart, J. S. Morgan, R. Chhetri, R. D. Ekers, S. J. Tingay","submitted_at":"2018-09-25T09:59:57Z","abstract_excerpt":"We describe the parameters of a low-frequency all-sky survey of compact radio sources using Interplanetary Scintillation (IPS), undertaken with the Murchison Widefield Array (MWA). While this survey gives important complementary information to low-resolution survey such as the MWA GLEAM survey, providing information on the subarsecond structure of every source, a survey of this kind has not been attempted in the era of low-frequency imaging arrays such as the MWA and LOFAR. Here we set out the capabilities of such a survey, describing the limitations imposed by the heliocentric observing geome"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.09388","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":"2026-05-17T23:54:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pbxRk10wSZkQiHvQAOGsVLxlv4Ol9gcmBUUhcxpZlNbAUpQCT8DfAvd2WV0FpGXfgXeQy2LzkSkCSI36KNgmAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T17:34:16.600582Z"},"content_sha256":"802c1d8a526afa7f595b21136a15d6a7c3cd28b8d8648a02cf1ec086c9fa19d9","schema_version":"1.0","event_id":"sha256:802c1d8a526afa7f595b21136a15d6a7c3cd28b8d8648a02cf1ec086c9fa19d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3SYC6RNMER766PU2M3YJ43BS6Y/bundle.json","state_url":"https://pith.science/pith/3SYC6RNMER766PU2M3YJ43BS6Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3SYC6RNMER766PU2M3YJ43BS6Y/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":"2026-05-27T17:34:16Z","links":{"resolver":"https://pith.science/pith/3SYC6RNMER766PU2M3YJ43BS6Y","bundle":"https://pith.science/pith/3SYC6RNMER766PU2M3YJ43BS6Y/bundle.json","state":"https://pith.science/pith/3SYC6RNMER766PU2M3YJ43BS6Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3SYC6RNMER766PU2M3YJ43BS6Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:3SYC6RNMER766PU2M3YJ43BS6Y","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":"063e1fcba541f77c5082cbab553a3a604d9af871a5820c83c84653ea9a985ecc","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-25T09:59:57Z","title_canon_sha256":"8c88158af286ea3356d33feacee51697153a4c954aba6d3068d6da7fa70368d1"},"schema_version":"1.0","source":{"id":"1809.09388","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.09388","created_at":"2026-05-17T23:54:34Z"},{"alias_kind":"arxiv_version","alias_value":"1809.09388v1","created_at":"2026-05-17T23:54:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.09388","created_at":"2026-05-17T23:54:34Z"},{"alias_kind":"pith_short_12","alias_value":"3SYC6RNMER76","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"3SYC6RNMER766PU2","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"3SYC6RNM","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:802c1d8a526afa7f595b21136a15d6a7c3cd28b8d8648a02cf1ec086c9fa19d9","target":"graph","created_at":"2026-05-17T23:54:34Z","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 describe the parameters of a low-frequency all-sky survey of compact radio sources using Interplanetary Scintillation (IPS), undertaken with the Murchison Widefield Array (MWA). While this survey gives important complementary information to low-resolution survey such as the MWA GLEAM survey, providing information on the subarsecond structure of every source, a survey of this kind has not been attempted in the era of low-frequency imaging arrays such as the MWA and LOFAR. Here we set out the capabilities of such a survey, describing the limitations imposed by the heliocentric observing geome","authors_text":"E. M. Sadler, J-P. Macquart, J. S. Morgan, R. Chhetri, R. D. Ekers, S. J. Tingay","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-25T09:59:57Z","title":"Interplanetary Scintillation with the Murchison Widefield Array V: An All-sky Survey of Compact Sources using a Modern Low-frequency Radio Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.09388","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:f83fb90ece4b02b123426cc362e0e182e69ac1f839110bf0d3ac8de606efa388","target":"record","created_at":"2026-05-17T23:54:34Z","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":"063e1fcba541f77c5082cbab553a3a604d9af871a5820c83c84653ea9a985ecc","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-25T09:59:57Z","title_canon_sha256":"8c88158af286ea3356d33feacee51697153a4c954aba6d3068d6da7fa70368d1"},"schema_version":"1.0","source":{"id":"1809.09388","kind":"arxiv","version":1}},"canonical_sha256":"dcb02f45ac247fef3e9a66f09e6c32f6005f390e94e5975aef99bfc6947a33c4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dcb02f45ac247fef3e9a66f09e6c32f6005f390e94e5975aef99bfc6947a33c4","first_computed_at":"2026-05-17T23:54:34.150868Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:34.150868Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ide8EoDqIvTNcAVZkxyUnYaHpQ9XWwOnUXZyMZdFaPZLTdgSDSR40tcByMOACJohh5i9U6Px9x6Yfx9K6v09DA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:34.151515Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.09388","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f83fb90ece4b02b123426cc362e0e182e69ac1f839110bf0d3ac8de606efa388","sha256:802c1d8a526afa7f595b21136a15d6a7c3cd28b8d8648a02cf1ec086c9fa19d9"],"state_sha256":"3d746b7967c7c717ef5ffb912aa37dcacf56c46b9030d54fd621ce8c44c22c98"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e11kSTwGNl4F2PhCo80f+GSX3/I63+WZflnwWGrCvV64N00Ix1jKJ28S02wcamyPT5JWDmSnGNjHGhuV8IVuCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T17:34:16.603717Z","bundle_sha256":"ab5b4eef59d9741b64c2bbf7d940007b9690d7622fbe7464744109ef6b0a9e10"}}