{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:45Z3FVS7HWGCTKS7XUNRLJ4XAL","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":"c229d499dc313aa4c5abec9b702a702698cc420c6851a4e048ab716cddd8e770","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-04-26T13:47:37Z","title_canon_sha256":"4ea3a3f23137fec963ff7f736ac9e202595de5db3e58f05149e9acf2beb7233f"},"schema_version":"1.0","source":{"id":"1504.06824","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.06824","created_at":"2026-05-18T01:35:34Z"},{"alias_kind":"arxiv_version","alias_value":"1504.06824v2","created_at":"2026-05-18T01:35:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.06824","created_at":"2026-05-18T01:35:34Z"},{"alias_kind":"pith_short_12","alias_value":"45Z3FVS7HWGC","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"45Z3FVS7HWGCTKS7","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"45Z3FVS7","created_at":"2026-05-18T12:29:05Z"}],"graph_snapshots":[{"event_id":"sha256:4e0e75711711bb5c454304bfdbfac8be9af6bb3e2a3fd1121c3ede7e26b81a88","target":"graph","created_at":"2026-05-18T01:35:34Z","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 present high resolution (0.\"4) IRAM PdBI and ALMA mm and submm observations of the (ultra) luminous infrared galaxies ((U)LIRGs) IRAS17208-0014, Arp220, IC860 and Zw049.057 that reveal intense line emission from vibrationally excited ($\\nu_2$=1) J=3-2 and 4-3 HCN. The emission is emerging from buried, compact (r<17-70 pc) nuclei that have very high implied mid-infrared surface brightness $>$$5\\times 10^{13}$ L$_{\\odot}$ kpc$^{-2}$. These nuclei are likely powered by accreting supermassive black holes (SMBHs) and/or hot (>200 K) extreme starbursts. Vibrational, $\\nu_2$=1, lines of HCN are ex","authors_text":"A. Evans, C. Henkel, E. Gonzalez-Alfonso, E. Sturm, F. Combes, G. A. Fuller, J. Cernicharo, K. Sakamoto, L. Armus, M. Spaans, P. van der Werf, R. Neri, S. Aalto, S. Garcia-Burillo, S. Martin F. Costagliola, S. Muehle, S. Muller, S. Viti, T. R. Greve","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-04-26T13:47:37Z","title":"Probing highly obscured, self-absorbed galaxy nuclei with vibrationally excited HCN"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.06824","kind":"arxiv","version":2},"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":"sha256:6bf750971d65cb034398b8ea17c47d6bac001d141cec815c750bc99f17a174a2","target":"record","created_at":"2026-05-18T01:35:34Z","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":"c229d499dc313aa4c5abec9b702a702698cc420c6851a4e048ab716cddd8e770","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-04-26T13:47:37Z","title_canon_sha256":"4ea3a3f23137fec963ff7f736ac9e202595de5db3e58f05149e9acf2beb7233f"},"schema_version":"1.0","source":{"id":"1504.06824","kind":"arxiv","version":2}},"canonical_sha256":"e773b2d65f3d8c29aa5fbd1b15a79702e7f445661347af7dfd888461fc406983","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e773b2d65f3d8c29aa5fbd1b15a79702e7f445661347af7dfd888461fc406983","first_computed_at":"2026-05-18T01:35:34.811598Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:34.811598Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LlwKVQnbMgmR+g0l+rHd3X120xIQyEOHzt/78ZnybzAhj7LrRm+1omaVwXRmGprWLBhpeOLka9thLMtqP/ZvCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:34.812278Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.06824","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6bf750971d65cb034398b8ea17c47d6bac001d141cec815c750bc99f17a174a2","sha256:4e0e75711711bb5c454304bfdbfac8be9af6bb3e2a3fd1121c3ede7e26b81a88"],"state_sha256":"43f7eac692394030b4b6b10a5bbc95d1a266d1139d2a69ba43c109e5a39b1fba"}