{"paper":{"title":"Exploring MAXI J1744-294: IXPE insights into a Newly Discovered X-ray Transient","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Adam Ingram, Alexandra Veledina, Andrea Gnarini, Antonella Tarana, Antonino D'A\\`i, Barbara de Marco, Enrico Costa, Fabio Muleri, Federico M. Vincentelli, Fiamma Capitanio, Francesco Tombesi, Giorgio Matt, Guglielmo Mastroserio, Jakub Podgorn\\'y, James F. Steiner, J\\'er\\^ome Rodriguez, Ji\\v{r}\\'i Svoboda, Juri Poutanen, Kaya Mori, Lorenzo Marra, Maitrayee Gupta, Maxime Parra, M. Cristina Baglio, Melania Del Santo, Michal Dov\\v{c}iak, Paolo Soffitta, Pierre-Olivier Petrucci, Roberto Taverna, Romana Miku\\v{s}incov\\'a, Sergio Fabiani, Shifra Mandel, Shuo Zhang, Stefano Bianchi, Swati Ravi, Thomas D. Russell, Vittoria Elvezia Gianolli","submitted_at":"2025-06-20T15:03:05Z","abstract_excerpt":"We present the first IXPE spectro-polarimetric observation of the black hole candidate MAXI J1744$-$294, a transient X-ray source discovered during a bright 2025 outburst in the Galactic center region. During the $\\sim$150 ks observation, the source was found in the soft state, and its spectrum was well described by an absorbed multicolor disk with a minor high-energy tail. No significant polarization was detected, and we derived a 3$\\sigma$ upper limit on the polarization degree of $1.3\\%$ in the 2--8 keV energy band. This result is consistent with previous findings for soft-state black hole "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.17050","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/2506.17050/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"}