{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:RLFO7ODYGHWAERZB3IA2PPPMET","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":"ce6876abb23c2c71d5f8523e8e2d2cb36c0ad24afc440d0c108348dcca032c4b","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-09T10:20:48Z","title_canon_sha256":"6002d735edb178f05d8457fc168c07f8de8c61bd935f5d28fdd3838128361308"},"schema_version":"1.0","source":{"id":"1301.1800","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.1800","created_at":"2026-05-18T01:52:14Z"},{"alias_kind":"arxiv_version","alias_value":"1301.1800v1","created_at":"2026-05-18T01:52:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.1800","created_at":"2026-05-18T01:52:14Z"},{"alias_kind":"pith_short_12","alias_value":"RLFO7ODYGHWA","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_16","alias_value":"RLFO7ODYGHWAERZB","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_8","alias_value":"RLFO7ODY","created_at":"2026-05-18T12:27:59Z"}],"graph_snapshots":[{"event_id":"sha256:561966bd8e8b69e387220f82bbdf6ec49dc5637c3bbd2916242fdbf6f4ccc2cc","target":"graph","created_at":"2026-05-18T01:52:14Z","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 study the X-ray emission from NGC1277, a galaxy in the core of the Perseus cluster, for which van den Bosch et al. have recently claimed the presence of an UltraMassive Black Hole (UMBH) of mass 1.7 times 10^10 Msun, unless the IMF of the stars in the stellar bulge is extremely bottom heavy. The X-rays originate in a power-law component of luminosity 1.3 times 10^40 erg/s embedded in a 1 keV thermal minicorona which has a half-light radius of about 360 pc, typical of many early-type galaxies in rich clusters of galaxies. If Bondi accretion operated onto the UMBH from the minicorona with a r","authors_text":"A. C. Fabian, J. M. Miller, J. S. Sanders, M. Haehnelt, M. J. Rees","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-09T10:20:48Z","title":"X-ray emission from the Ultramassive Black Hole candidate NGC1277: implications and speculation on its origin"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.1800","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:fc64414669e66c9c6cec822161c160d4b18486742e833464f54aebba5bab5f61","target":"record","created_at":"2026-05-18T01:52:14Z","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":"ce6876abb23c2c71d5f8523e8e2d2cb36c0ad24afc440d0c108348dcca032c4b","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-09T10:20:48Z","title_canon_sha256":"6002d735edb178f05d8457fc168c07f8de8c61bd935f5d28fdd3838128361308"},"schema_version":"1.0","source":{"id":"1301.1800","kind":"arxiv","version":1}},"canonical_sha256":"8acaefb87831ec024721da01a7bdec24c9943f190eac7b339978f6f8631eff0f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8acaefb87831ec024721da01a7bdec24c9943f190eac7b339978f6f8631eff0f","first_computed_at":"2026-05-18T01:52:14.568176Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:14.568176Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f7IiRjHz2JChmrlt5EFS99EvpOWpN6ohkRhNzZvTq07LzcwAPIhbuzOwaOLM/J0l/tURqmyMKIfmZ4v46qZyBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:14.568731Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.1800","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fc64414669e66c9c6cec822161c160d4b18486742e833464f54aebba5bab5f61","sha256:561966bd8e8b69e387220f82bbdf6ec49dc5637c3bbd2916242fdbf6f4ccc2cc"],"state_sha256":"1c72f573cb2859e22e7aac66edd7eb652e1d961c96ae9405241177907d34e573"}