{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:PXVV5ACFZQWNFL7FZ3YSNOIQZJ","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":"d722b26a44d9e31cb4b3fe8561f4c62285a3186496fa67c2a0c826e821ef1418","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-06-10T16:33:11Z","title_canon_sha256":"3b04798efa83d753a046ffca86f51b64356659b34173069b440a3a769f76def2"},"schema_version":"1.0","source":{"id":"1406.2620","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.2620","created_at":"2026-05-18T02:43:35Z"},{"alias_kind":"arxiv_version","alias_value":"1406.2620v1","created_at":"2026-05-18T02:43:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.2620","created_at":"2026-05-18T02:43:35Z"},{"alias_kind":"pith_short_12","alias_value":"PXVV5ACFZQWN","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"PXVV5ACFZQWNFL7F","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"PXVV5ACF","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:fb2cb432b33bed127bcb2d79ec89339cea8274aa5a7b92ca2749a6f8979e8610","target":"graph","created_at":"2026-05-18T02:43:35Z","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":"About 20% out of the $>1000$ known exoplanets are Jupiter analogs orbiting very close to their parent stars. It is still under debate to what detectable level such hot Jupiters possibly affect the activity of the host stars through tidal or magnetic star-planet interaction. In this paper we report on an 87 ks Chandra observation of the hot Jupiter hosting star WASP-18. This system is composed of an F6 type star and a hot Jupiter of mass $10.4 M_{Jup}$ orbiting in less than 20 hr around the parent star. On the basis of an isochrone fitting, WASP-18 is thought to be 600 Myr old and within the ra","authors_text":"Ignazio Pillitteri, Salvatore Sciortino, Scott J. Wolk, Victoria Antoci","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-06-10T16:33:11Z","title":"No X-rays from WASP-18. Implications for its age, activity, and the influence of its massive hot Jupiter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.2620","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":"sha256:324653c8b0e312f0d9bb03c8d3023368704b156d62f098383b2bbccff1df5a12","target":"record","created_at":"2026-05-18T02:43:35Z","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":"d722b26a44d9e31cb4b3fe8561f4c62285a3186496fa67c2a0c826e821ef1418","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-06-10T16:33:11Z","title_canon_sha256":"3b04798efa83d753a046ffca86f51b64356659b34173069b440a3a769f76def2"},"schema_version":"1.0","source":{"id":"1406.2620","kind":"arxiv","version":1}},"canonical_sha256":"7deb5e8045cc2cd2afe5cef126b910ca7e2e774b85234889bf0d0b486ba3e3e9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7deb5e8045cc2cd2afe5cef126b910ca7e2e774b85234889bf0d0b486ba3e3e9","first_computed_at":"2026-05-18T02:43:35.076996Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:43:35.076996Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4fhnK8cVw0iDRXz/ZGPmTvROvuOLcSN8OPL3MVKRmBO3Q0Ly9QEXAWZPTp8cH1Zdq+q5bQfakiEaW2ZPxyAbAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:43:35.077513Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.2620","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:324653c8b0e312f0d9bb03c8d3023368704b156d62f098383b2bbccff1df5a12","sha256:fb2cb432b33bed127bcb2d79ec89339cea8274aa5a7b92ca2749a6f8979e8610"],"state_sha256":"13307f0bcc29b2a163415d63423377da2ac4d8119f94be753bb6aafeecc34c6e"}