{"paper":{"title":"The spin measurement of the black hole SLX 1746-331 using Insight-HXMT observations","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Jiashi Chen, Wei Wang","submitted_at":"2025-04-07T06:14:48Z","abstract_excerpt":"We present an X-ray spectral analysis of a black hole X-ray binary SLX 1746-331 during the 2023 outburst using five \\textit{Insight}-HXMT observations. We jointly use the reflection model \\texttt{relxillcp} and the general relativistic thermal thin disk model \\texttt{kerrbb} to fit the spectra from 2 - 100 keV. By jointly fitting the five spectra, we constrained the black hole mass to be $M=5.8\\pm 0.3 M_{\\odot}$ and dimensionless spin parameter to be $a_{*}=0.88^{+0.01}_{-0.02}$ (90 percent statistical confidence). The reflection model shows that SLX 1746-331 is a high-inclination system with "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.04760","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/2504.04760/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"}