{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:26IA52T2M5FWIEKIUMBBQ6AP7C","short_pith_number":"pith:26IA52T2","schema_version":"1.0","canonical_sha256":"d7900eea7a674b641148a30218780ff8a43d9df18ca04ebd4e4fb89ecfdf29f2","source":{"kind":"arxiv","id":"1607.03061","version":1},"attestation_state":"computed","paper":{"title":"Ammonia excitation imaging of shocked gas towards the W28 gamma-ray source HESS J1801-233","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Akiko Kawamura, Andrew Walsh, Brent P. Nicholas, Gavin P. Rowell, Michael. G. Burton, Nigel I. Maxted, Phoebe de Wilt, Yasuo Fukui","submitted_at":"2016-07-08T02:13:38Z","abstract_excerpt":"We present 12 mm Mopra observations of the dense (>10^3 cm^-3 ) molecular gas towards the north-east (NE) of the W28 supernova remnant (SNR). This cloud is spatially well-matched to the TeV gamma-ray source HESS J1801-233 and is known to be a SNR-molecular cloud interaction region. Shock-disruption is evident from broad NH3 (1,1) spectral line-widths in regions towards the W28 SNR, while strong detections of spatially-extended NH3(3,3), NH3(4,4) and NH3(6,6) inversion emission towards the cloud strengthen the case for the existence of high temperatures within the cloud. Velocity dispersion mea"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1607.03061","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-07-08T02:13:38Z","cross_cats_sorted":[],"title_canon_sha256":"88fcdb7519c000b9da6e017e425780f82a255f08419f346f2ef053dbcbc0aee9","abstract_canon_sha256":"e53d158b7effadb340074693e31c7bb59e41581fdfa246b402ada1163939cc9a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:38.258416Z","signature_b64":"SR9CndtgPrT4FQe/rL/0BH/UXNu8QtXUgGHvlLIJoUbqIUgyb3F+OCSfqy/Oxex+PecwfUwXKMI5VmQQZhuDDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d7900eea7a674b641148a30218780ff8a43d9df18ca04ebd4e4fb89ecfdf29f2","last_reissued_at":"2026-05-18T01:08:38.257875Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:38.257875Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Ammonia excitation imaging of shocked gas towards the W28 gamma-ray source HESS J1801-233","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Akiko Kawamura, Andrew Walsh, Brent P. Nicholas, Gavin P. Rowell, Michael. G. Burton, Nigel I. Maxted, Phoebe de Wilt, Yasuo Fukui","submitted_at":"2016-07-08T02:13:38Z","abstract_excerpt":"We present 12 mm Mopra observations of the dense (>10^3 cm^-3 ) molecular gas towards the north-east (NE) of the W28 supernova remnant (SNR). This cloud is spatially well-matched to the TeV gamma-ray source HESS J1801-233 and is known to be a SNR-molecular cloud interaction region. Shock-disruption is evident from broad NH3 (1,1) spectral line-widths in regions towards the W28 SNR, while strong detections of spatially-extended NH3(3,3), NH3(4,4) and NH3(6,6) inversion emission towards the cloud strengthen the case for the existence of high temperatures within the cloud. Velocity dispersion mea"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.03061","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1607.03061","created_at":"2026-05-18T01:08:38.257963+00:00"},{"alias_kind":"arxiv_version","alias_value":"1607.03061v1","created_at":"2026-05-18T01:08:38.257963+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.03061","created_at":"2026-05-18T01:08:38.257963+00:00"},{"alias_kind":"pith_short_12","alias_value":"26IA52T2M5FW","created_at":"2026-05-18T12:29:52.810259+00:00"},{"alias_kind":"pith_short_16","alias_value":"26IA52T2M5FWIEKI","created_at":"2026-05-18T12:29:52.810259+00:00"},{"alias_kind":"pith_short_8","alias_value":"26IA52T2","created_at":"2026-05-18T12:29:52.810259+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/26IA52T2M5FWIEKIUMBBQ6AP7C","json":"https://pith.science/pith/26IA52T2M5FWIEKIUMBBQ6AP7C.json","graph_json":"https://pith.science/api/pith-number/26IA52T2M5FWIEKIUMBBQ6AP7C/graph.json","events_json":"https://pith.science/api/pith-number/26IA52T2M5FWIEKIUMBBQ6AP7C/events.json","paper":"https://pith.science/paper/26IA52T2"},"agent_actions":{"view_html":"https://pith.science/pith/26IA52T2M5FWIEKIUMBBQ6AP7C","download_json":"https://pith.science/pith/26IA52T2M5FWIEKIUMBBQ6AP7C.json","view_paper":"https://pith.science/paper/26IA52T2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1607.03061&json=true","fetch_graph":"https://pith.science/api/pith-number/26IA52T2M5FWIEKIUMBBQ6AP7C/graph.json","fetch_events":"https://pith.science/api/pith-number/26IA52T2M5FWIEKIUMBBQ6AP7C/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/26IA52T2M5FWIEKIUMBBQ6AP7C/action/timestamp_anchor","attest_storage":"https://pith.science/pith/26IA52T2M5FWIEKIUMBBQ6AP7C/action/storage_attestation","attest_author":"https://pith.science/pith/26IA52T2M5FWIEKIUMBBQ6AP7C/action/author_attestation","sign_citation":"https://pith.science/pith/26IA52T2M5FWIEKIUMBBQ6AP7C/action/citation_signature","submit_replication":"https://pith.science/pith/26IA52T2M5FWIEKIUMBBQ6AP7C/action/replication_record"}},"created_at":"2026-05-18T01:08:38.257963+00:00","updated_at":"2026-05-18T01:08:38.257963+00:00"}