{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:7TR5P34LEEPKPD3TA3SNNMZU6N","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":"93c176100c45781ab4cb06df158850fb5980be32b4ecd4dde25aa654536b367d","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-09-22T20:18:37Z","title_canon_sha256":"8d1eac330e1e09dafffdf5ecd39f610772f67c245217408c78922dc7bf0786af"},"schema_version":"1.0","source":{"id":"0909.4082","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.4082","created_at":"2026-05-18T02:34:28Z"},{"alias_kind":"arxiv_version","alias_value":"0909.4082v1","created_at":"2026-05-18T02:34:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.4082","created_at":"2026-05-18T02:34:28Z"},{"alias_kind":"pith_short_12","alias_value":"7TR5P34LEEPK","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"7TR5P34LEEPKPD3T","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"7TR5P34L","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:2c3b9544751392e1f914c49e0350abbdb3c1f5bbb74af97bb4b7a518f35c1489","target":"graph","created_at":"2026-05-18T02:34:28Z","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":"In this paper we study the nuclear obscuration of galaxies hosting LINERs based on their X-ray and optical emission. They show column densities (N_H) at soft energies (0.5-2 keV) mostly related to the diffuse emission around the AGN, showing a correlation with the optical extinction. N_H at hard energies (2-10 keV) seem to be much higher than what would be expected from the optical extinction. They might be associated to the inner regions of the AGN, buried at optical wavelengths. The main result of this paper is that around 50% of our LINER sample shows signatures of Compton-thickness (CT) ac","authors_text":"Astronomy, Crete, Department of Physics, Granada, Greece X-ray Astronomy Group, Heraklion, I. Marquez (Instituto de Astrofisica de Andalucia (CSIC), J. Masegosa (Instituto de Astrofisica de Andalucia (CSIC), Leicester, Leicester University, M. Guainazzi (European Space Astronomy Centre of ESA, O. Gonzalez-Martin (Physics Department, Spain), UK), University of Crete, Villanueva de la Canada","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-09-22T20:18:37Z","title":"Fitting LINER nuclei within the AGN family: A matter of obscuration?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.4082","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":"sha256:4e9c2a8aad2d775842e66a3fe0feb8e3c5fc9f6bd4b7b5f554935c46695d2005","target":"record","created_at":"2026-05-18T02:34:28Z","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":"93c176100c45781ab4cb06df158850fb5980be32b4ecd4dde25aa654536b367d","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-09-22T20:18:37Z","title_canon_sha256":"8d1eac330e1e09dafffdf5ecd39f610772f67c245217408c78922dc7bf0786af"},"schema_version":"1.0","source":{"id":"0909.4082","kind":"arxiv","version":1}},"canonical_sha256":"fce3d7ef8b211ea78f7306e4d6b334f3476c4f066961a5d93383a7c4752911ef","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fce3d7ef8b211ea78f7306e4d6b334f3476c4f066961a5d93383a7c4752911ef","first_computed_at":"2026-05-18T02:34:28.127445Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:34:28.127445Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h0PnYCgmTRmTLRPWx1Vr0GYTgTNputZB4oCm9ZU4pTjh1LFoHckVhkktFJLmp6kJ60hwV/oO+8EYF7dq4ogPCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:34:28.127956Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.4082","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e9c2a8aad2d775842e66a3fe0feb8e3c5fc9f6bd4b7b5f554935c46695d2005","sha256:2c3b9544751392e1f914c49e0350abbdb3c1f5bbb74af97bb4b7a518f35c1489"],"state_sha256":"7d8dbface431b2a97794c30d91ab7d05b030e22fe82c9e31066b4f0f4916b7a3"}