{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:3JTCTE2NGVZZEZGMXSM4DFJFEH","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":"3cfc76725a4ba4988a1b5e44f50a31878703ebd62401f8f36707035a6bdfcbe0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-12T18:00:15Z","title_canon_sha256":"8a6e118761dc3a6e57decd2f3c64154a47314872289a93ed624f3a3f3ebc0bf1"},"schema_version":"1.0","source":{"id":"1707.03842","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.03842","created_at":"2026-05-18T00:36:28Z"},{"alias_kind":"arxiv_version","alias_value":"1707.03842v1","created_at":"2026-05-18T00:36:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.03842","created_at":"2026-05-18T00:36:28Z"},{"alias_kind":"pith_short_12","alias_value":"3JTCTE2NGVZZ","created_at":"2026-05-18T12:30:58Z"},{"alias_kind":"pith_short_16","alias_value":"3JTCTE2NGVZZEZGM","created_at":"2026-05-18T12:30:58Z"},{"alias_kind":"pith_short_8","alias_value":"3JTCTE2N","created_at":"2026-05-18T12:30:58Z"}],"graph_snapshots":[{"event_id":"sha256:e0bb745301f8f2219644ec0ff6e3847d397e9286685405e86f11a6e34a221f26","target":"graph","created_at":"2026-05-18T00:36:28Z","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 use VLBA+VLA observations to measure the sizes of the scatter-broadened images of 6 of the most heavily scattered known pulsars: 3 within the Galactic Centre (GC) and 3 elsewhere in the inner Galactic plane. By combining the measured sizes with temporal pulse broadening data from the literature and using the thin-screen approximation, we locate the scattering medium along the line of sight to these 6 pulsars. At least two scattering screens are needed to explain the observations of the GC sample. We show that the screen inferred by previous observations of SGR J1745-2900 and Sgr A*, which m","authors_text":"A. Deller, A. G. Lyne, B. W. Stappers, D. Psaltis, G. C. Bower, J. Dexter, L. G. Spitler, M. Johnson, M. Kerr, M. Kramer, P. Demorest, R. Narayan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-12T18:00:15Z","title":"Locating the intense interstellar scattering towards the inner Galaxy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.03842","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":"sha256:072fd6d06e226757e9348051a4baf5a2cce57d19ffcf5e0b981f29dce2818c7f","target":"record","created_at":"2026-05-18T00:36:28Z","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":"3cfc76725a4ba4988a1b5e44f50a31878703ebd62401f8f36707035a6bdfcbe0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-12T18:00:15Z","title_canon_sha256":"8a6e118761dc3a6e57decd2f3c64154a47314872289a93ed624f3a3f3ebc0bf1"},"schema_version":"1.0","source":{"id":"1707.03842","kind":"arxiv","version":1}},"canonical_sha256":"da6629934d35739264ccbc99c1952521c14c1e987f9725cab121525f2c4eb723","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"da6629934d35739264ccbc99c1952521c14c1e987f9725cab121525f2c4eb723","first_computed_at":"2026-05-18T00:36:28.634744Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:28.634744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dUP51bOlFEym47bauFAePOpDWMOQ270ljnTuJXrmWFH/dT69jiijz/qLBdeeETUDPp6vjUkRpjs+Kmnt1VYTBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:28.635352Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.03842","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:072fd6d06e226757e9348051a4baf5a2cce57d19ffcf5e0b981f29dce2818c7f","sha256:e0bb745301f8f2219644ec0ff6e3847d397e9286685405e86f11a6e34a221f26"],"state_sha256":"6a44bc25ed57e394eb369a0640665a13fb5f3bc5e59c6f15eb25c88be23a1570"}