{"paper":{"title":"X-ray sources in the 1.75 Ms Ultra Narrow Deep Field observed by XMM-Newton","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"A. L. Longinotti, C. Vignali, D. Rosa-Gonz\\'alez, F. Nicastro, M. El\\'ias-Ch\\'avez, S. Mathur, Y. D. Mayya, Y. Krongold","submitted_at":"2021-06-19T09:00:35Z","abstract_excerpt":"In this work we present the results of the survey carried out on one of the deepest X-ray fields observed by the XMM-Newton satellite. The 1.75 Ms Ultra Narrow Deep Field (XMM175UNDF) survey is made by 13 observations taken over 2 years with a total exposure time of 1.75 Ms (1.372 Ms after flare-filtered) in a field of $30' \\times 30' $ centered around the blazar 1ES 1553+113. We stacked the 13 observations reaching flux limits of $4.03 \\times 10^{-16} $, $1.3 \\times 10^{-15}$, and $9.8 \\times 10^{-16}\\, erg\\, s^{-1}\\, cm^{-2}$ in the soft $(0.2 - 2\\, \\mathrm{keV})$, hard $(2 - 12\\, \\mathrm{ke"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.10455","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/2106.10455/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"}