{"paper":{"title":"Multiwavelength observation of an active M-dwarf star EV Lac and its stellar flare accompanied by a delayed prominence eruption","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"Daisaku Nogami, Hiroyuki Maehara, Hiroyuki Uchida, Hong-Peng Lu, Jiale Zhang, Kazunari Shibata, Kosuke Namekata, Satoshi Honda, Shun Inoue, Takeshi Go Tsuru, Teruaki Enoto, Yuta Notsu","submitted_at":"2023-12-31T04:52:50Z","abstract_excerpt":"We conducted 4-night multiwavelength observations of an active M-dwarf star EV Lac on 2022 October 24$-$27 with simultaneous coverage of soft X-rays (NICER; 0.2$-$12 $\\mathrm{keV}$, Swift XRT; 0.2$-$10 $\\mathrm{keV}$), near-ultraviolet (Swift UVOT/UVW2; 1600$-$3500 \\r{A}), optical photometry (TESS; 6000$-$10000 \\r{A}), and optical spectroscopy (Nayuta/MALLS; 6350$-$6800 \\r{A}). During the campaign, we detected a flare starting at 12:28 UTC on October 25 with its white-light bolometric energy of $3.4 \\times 10^{32}$ erg. At about 1 hour after this flare peak, our $\\mathrm{H\\alpha}$ spectrum sho"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2401.00399","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/2401.00399/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"}