{"paper":{"title":"Chandra Exposes the Core Collapsed Globular Cluster NGC 6397","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.M. Cool(2) (1 Harvard-Smithsonian Center for Astrophysics) (2 San Francisco State University), C.O. Heinke (1), J.E. Grindlay (1), P.D. Edmonds (1), S.S. Murray (1)","submitted_at":"2001-08-15T22:53:44Z","abstract_excerpt":"We report results of the Chandra deep imaging observation of the closest post-core collapse globular cluster, NGC 6397. Some 25 sources are detected within 2 arcmin of the cluster center of which about 20 are likely cluster members with L_x ~ 3x10^29 erg/s. The x-ray spectra suggest identifications with 1 quiescent low mass x-ray binary (qLMXB) detected by the thermal emission from its neutron star (NS) and 9 cataclysmic variables (CVs), 8 of which are identified in our deep HST imaging survey (reported separately). Three (of 16) BY Draconis main sequence binary candidates identified in our ea"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0108265","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0108265/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}