{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:DKFQDLB6Q67A5RFCJWQTPBOCMU","short_pith_number":"pith:DKFQDLB6","canonical_record":{"source":{"id":"1605.01140","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-04T04:31:04Z","cross_cats_sorted":[],"title_canon_sha256":"108924606d95fc39235f5d769c326bebe43a097c0666e0448f6785eb3ac90764","abstract_canon_sha256":"07360778f5f91a2dcdc4b4c68543b759a500ff57df8160476afe7fdf18e19025"},"schema_version":"1.0"},"canonical_sha256":"1a8b01ac3e87be0ec4a24da13785c26502497c7327a7b012f989f59a5170d058","source":{"kind":"arxiv","id":"1605.01140","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.01140","created_at":"2026-05-18T01:08:41Z"},{"alias_kind":"arxiv_version","alias_value":"1605.01140v1","created_at":"2026-05-18T01:08:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.01140","created_at":"2026-05-18T01:08:41Z"},{"alias_kind":"pith_short_12","alias_value":"DKFQDLB6Q67A","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"DKFQDLB6Q67A5RFC","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"DKFQDLB6","created_at":"2026-05-18T12:30:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:DKFQDLB6Q67A5RFCJWQTPBOCMU","target":"record","payload":{"canonical_record":{"source":{"id":"1605.01140","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-04T04:31:04Z","cross_cats_sorted":[],"title_canon_sha256":"108924606d95fc39235f5d769c326bebe43a097c0666e0448f6785eb3ac90764","abstract_canon_sha256":"07360778f5f91a2dcdc4b4c68543b759a500ff57df8160476afe7fdf18e19025"},"schema_version":"1.0"},"canonical_sha256":"1a8b01ac3e87be0ec4a24da13785c26502497c7327a7b012f989f59a5170d058","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:41.567042Z","signature_b64":"lGsRGsWMrWA52B4YjgP5mVikOS4WtKeSdIM335su+vSTOukBnuOKdbj7ivQDh3Ao5k4uqATAOFtAh3bQO2qRDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1a8b01ac3e87be0ec4a24da13785c26502497c7327a7b012f989f59a5170d058","last_reissued_at":"2026-05-18T01:08:41.566516Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:41.566516Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.01140","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":"2026-05-18T01:08:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zf0yCnWGnDYZ0PI3AncCC37tK0U/ksU56oMtKS0o2vegxWl+vInU9zeYJfGem1NnvvinF2p7lLNuA2TsrDnvAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T13:28:28.656232Z"},"content_sha256":"3c838e82bcaa9ddcccdb1fee5f275f9b9951206193f023288a901b9d4c0971eb","schema_version":"1.0","event_id":"sha256:3c838e82bcaa9ddcccdb1fee5f275f9b9951206193f023288a901b9d4c0971eb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:DKFQDLB6Q67A5RFCJWQTPBOCMU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tracing the Milky Way Nuclear Wind with 21cm Atomic Hydrogen Emission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Felix J. Lockman, N. M. McClure-Griffiths","submitted_at":"2016-05-04T04:31:04Z","abstract_excerpt":"There is evidence in 21cm HI emission for voids several kpc in size centered approximately on the Galactic centre, both above and below the Galactic plane. These appear to map the boundaries of the Galactic nuclear wind. An analysis of HI at the tangent points, where the distance to the gas can be estimated with reasonable accuracy, shows a sharp transition at Galactic radii $R\\lesssim 2.4$ kpc from the extended neutral gas layer characteristic of much of the Galactic disk, to a thin Gaussian layer with FWHM $\\sim 125$ pc. An anti-correlation between HI and $\\gamma$-ray emission at latitudes $"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.01140","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":"2026-05-18T01:08:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gKTkq+wZzBcn3IwQxdKfgtEXyW9B9qz0B4nF3RnI2EPMmJWrvaTt58MbcgqniyjmGNm7aYbZaIvzpSOO1nP8Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T13:28:28.656592Z"},"content_sha256":"2ae0cef7485f804706217bc9d66306cc0b8845cb6f489258d74033d65c92b4f2","schema_version":"1.0","event_id":"sha256:2ae0cef7485f804706217bc9d66306cc0b8845cb6f489258d74033d65c92b4f2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DKFQDLB6Q67A5RFCJWQTPBOCMU/bundle.json","state_url":"https://pith.science/pith/DKFQDLB6Q67A5RFCJWQTPBOCMU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DKFQDLB6Q67A5RFCJWQTPBOCMU/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":"2026-07-03T13:28:28Z","links":{"resolver":"https://pith.science/pith/DKFQDLB6Q67A5RFCJWQTPBOCMU","bundle":"https://pith.science/pith/DKFQDLB6Q67A5RFCJWQTPBOCMU/bundle.json","state":"https://pith.science/pith/DKFQDLB6Q67A5RFCJWQTPBOCMU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DKFQDLB6Q67A5RFCJWQTPBOCMU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:DKFQDLB6Q67A5RFCJWQTPBOCMU","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":"07360778f5f91a2dcdc4b4c68543b759a500ff57df8160476afe7fdf18e19025","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-04T04:31:04Z","title_canon_sha256":"108924606d95fc39235f5d769c326bebe43a097c0666e0448f6785eb3ac90764"},"schema_version":"1.0","source":{"id":"1605.01140","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.01140","created_at":"2026-05-18T01:08:41Z"},{"alias_kind":"arxiv_version","alias_value":"1605.01140v1","created_at":"2026-05-18T01:08:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.01140","created_at":"2026-05-18T01:08:41Z"},{"alias_kind":"pith_short_12","alias_value":"DKFQDLB6Q67A","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"DKFQDLB6Q67A5RFC","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"DKFQDLB6","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:2ae0cef7485f804706217bc9d66306cc0b8845cb6f489258d74033d65c92b4f2","target":"graph","created_at":"2026-05-18T01:08:41Z","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":"There is evidence in 21cm HI emission for voids several kpc in size centered approximately on the Galactic centre, both above and below the Galactic plane. These appear to map the boundaries of the Galactic nuclear wind. An analysis of HI at the tangent points, where the distance to the gas can be estimated with reasonable accuracy, shows a sharp transition at Galactic radii $R\\lesssim 2.4$ kpc from the extended neutral gas layer characteristic of much of the Galactic disk, to a thin Gaussian layer with FWHM $\\sim 125$ pc. An anti-correlation between HI and $\\gamma$-ray emission at latitudes $","authors_text":"Felix J. Lockman, N. M. McClure-Griffiths","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-04T04:31:04Z","title":"Tracing the Milky Way Nuclear Wind with 21cm Atomic Hydrogen Emission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.01140","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":"sha256:3c838e82bcaa9ddcccdb1fee5f275f9b9951206193f023288a901b9d4c0971eb","target":"record","created_at":"2026-05-18T01:08:41Z","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":"07360778f5f91a2dcdc4b4c68543b759a500ff57df8160476afe7fdf18e19025","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-04T04:31:04Z","title_canon_sha256":"108924606d95fc39235f5d769c326bebe43a097c0666e0448f6785eb3ac90764"},"schema_version":"1.0","source":{"id":"1605.01140","kind":"arxiv","version":1}},"canonical_sha256":"1a8b01ac3e87be0ec4a24da13785c26502497c7327a7b012f989f59a5170d058","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1a8b01ac3e87be0ec4a24da13785c26502497c7327a7b012f989f59a5170d058","first_computed_at":"2026-05-18T01:08:41.566516Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:41.566516Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lGsRGsWMrWA52B4YjgP5mVikOS4WtKeSdIM335su+vSTOukBnuOKdbj7ivQDh3Ao5k4uqATAOFtAh3bQO2qRDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:41.567042Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.01140","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3c838e82bcaa9ddcccdb1fee5f275f9b9951206193f023288a901b9d4c0971eb","sha256:2ae0cef7485f804706217bc9d66306cc0b8845cb6f489258d74033d65c92b4f2"],"state_sha256":"ff32d81b8df121425d95b88fd0c5f734adc4b9e3060754b3b19556481f6f7c77"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3tAkRpwW0maYcXE7InLem5b/8Mtkp9UAt9SnzfZc3usHEVfINXgajgTISnFMQAOFtbGPK7UZAZBbLzxLxCYEBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-03T13:28:28.658553Z","bundle_sha256":"ce35e095d9c4e0ba7bb98db3603842157effa510bc3a4298aabe671236a1d2da"}}