{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:37MV5X35ILCP56U56QN7CNBVNP","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":"f8d1ad59362a6f80559aa481697a3b2efdc8e0bad5bd8cbce32e3873d3d7bbfb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-09-04T11:06:35Z","title_canon_sha256":"1d1262fe31919e6215603d28b987e377619234ca25524dcf7c10c77b3c46fda7"},"schema_version":"1.0","source":{"id":"1809.00893","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.00893","created_at":"2026-05-18T00:06:32Z"},{"alias_kind":"arxiv_version","alias_value":"1809.00893v1","created_at":"2026-05-18T00:06:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.00893","created_at":"2026-05-18T00:06:32Z"},{"alias_kind":"pith_short_12","alias_value":"37MV5X35ILCP","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"37MV5X35ILCP56U5","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"37MV5X35","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:19ea7c1658652b4c8ea20945cf006bc3fcf36c744841f3849112360dd3375570","target":"graph","created_at":"2026-05-18T00:06:32Z","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":"Context. The contribution of quiet-Sun regions to the solar irradiance variability is currently unclear. Some solar-cycle variations of the quiet-Sun physical structure, such as the temperature gradient, might affect the irradiance. The synoptic measurement of this quantity along the activity cycle would improve our understanding of long-term irradiance variations. Aims. We intend to test a method previously introduced for measuring the photospheric temperature gradient from high-resolution spectroscopic observation and to study its feasibility with ground-based instruments with and without ad","authors_text":"A. Chiavassa, G. Ricort, L. Marquis, M. Carbillet, M. Faurobert","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-09-04T11:06:35Z","title":"Temperature gradient in the solar photosphere. Test of a new spectroscopic method and study of its feasibility for ground-based telescopes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.00893","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":"sha256:3b16b76f602847f81db92696a1a4d028f3640c445e3b543992c72d7aae70b8c3","target":"record","created_at":"2026-05-18T00:06:32Z","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":"f8d1ad59362a6f80559aa481697a3b2efdc8e0bad5bd8cbce32e3873d3d7bbfb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-09-04T11:06:35Z","title_canon_sha256":"1d1262fe31919e6215603d28b987e377619234ca25524dcf7c10c77b3c46fda7"},"schema_version":"1.0","source":{"id":"1809.00893","kind":"arxiv","version":1}},"canonical_sha256":"dfd95edf7d42c4fefa9df41bf134356bd9b71fc76566913a47837f67473e637e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dfd95edf7d42c4fefa9df41bf134356bd9b71fc76566913a47837f67473e637e","first_computed_at":"2026-05-18T00:06:32.220997Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:06:32.220997Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2OUJ4518WyoGw81OFWaNwkciEiazAmRHHM8yMIiNILz/kXuFNLU8s0v/RDeOC+eKwes4Ts2Hc08XjqAJcqCrAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:06:32.221492Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.00893","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3b16b76f602847f81db92696a1a4d028f3640c445e3b543992c72d7aae70b8c3","sha256:19ea7c1658652b4c8ea20945cf006bc3fcf36c744841f3849112360dd3375570"],"state_sha256":"e5913e0f228bf4cbec0114c89ffd9012693602a79e70cce9eea042e0cb9c26ba"}