{"paper":{"title":"Detection of extended X-ray emission around the PeVatron microquasar V4641 Sgr with XRISM","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Chris Done, Daiki Miura, Dai Tateishi, Dezhi Huang, Eduardo de la Fuente, Hideki Uchiyama, Hiromasa Suzuki, Hiroyuki Uchida, Kaya Mori, Laura Olivera-Nieto, Mar\\'ia D\\'iaz Trigo, Marianne Lemoine-Goumard, Maxime Parra, Megumi Shidatsu, Montserrat Armas Padilla, Naomi Tsuji, Ryota Tomaru, Sabrina Casanova, Samar Safi-Harb, Sei Kato, Shigeo S. Kimura, Shogo B. Kobayashi, Shoji Ogawa, Shun Inoue, Takaaki Tanaka, Teo Mu\\~noz-Darias, Xiaojie Wang, Yoshiaki Kanemaru, Yoshihiro Ueda","submitted_at":"2024-12-11T04:15:55Z","abstract_excerpt":"A recent report on the detection of very-high-energy gamma rays from V4641 Sagittarii (V4641 Sgr) up to ~0.8 peta-electronvolt has made it the second confirmed \"PeVatron\" microquasar. Here we report on the observation of V4641 Sgr with X-Ray Imaging and Spectroscopy Mission (XRISM) in September 2024. Thanks to the large field of view and low background, the CCD imager Xtend successfully detected for the first time X-ray extended emission around V4641 Sgr with a significance of > 4.5 sigma and > 10 sigma based on our imaging and spectral analysis, respectively. The spatial extent is estimated t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.08089","kind":"arxiv","version":2},"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/2412.08089/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"}