The XMM-Newton Slew Survey XMMSL3 Source Catalogue

The third version of the XMM-Newton slew survey catalogue, XMMSL3, has been released on 19th February 2025 by the XMM-Newton Survey Science Centre (XMM-SSC) in collaboration with the SOC. This version includes an extra 8.5 years of data with respect to XMMSL3. There are 140735 X-ray detections which relate to 116598 unique sources, doubling the number of detections available in the previous version, XMMSL2. These detections come from 3120 pn slew observations that were taken by the 23rd Auguest 2023. This catalogue version covers more than 90% of the sky, where some regions of the sky have been pointed as many as 78 times. Around 8% of all the detections are classified as extended. The median positional uncertainty of the clean catalogue detections is 4 arcseconds. Median fluxes in the catalogue are ~1.1E-12 and ~9.0E-12 erg/cm2/s in the soft (0.2-2 keV) and hard (2-12 keV) X-ray band, respectively.XMM-牛顿摆扫巡天目录第三版（XMMSL3）已于2025年2月19日由XMM-牛顿巡天科学中心（XMM-Newton Survey Science Centre, XMM-SSC）联合航天器运营中心（SOC）正式发布。相较于上一版XMMSL2，本版新增了8.5年的观测数据，共计包含140735个X射线探测结果，对应116598个独立源，探测总量较上一版翻倍。这些探测数据源自截至2023年8月23日完成的3120次pn摆扫观测。本版目录覆盖了90%以上的天区，其中部分天区的观测指向次数多达78次。约8%的探测结果被归类为延展源。经严格质控筛选后的目录探测结果的中位位置不确定度为4角秒。该目录中，软X射线波段（0.2-2 keV）与硬X射线波段（2-12 keV）的中位通量分别约为1.1×10^-12 erg/cm²/s和9.0×10^-12 erg/cm²/s。

搜集汇总

背景与挑战

背景概述

XMM-Newton Slew Survey XMMSL3源目录是第三个版本，发布于2025年2月19日，包含截至2023年8月的额外8.5年数据，提供140735个X射线探测，对应116598个独特源，覆盖超过90%的天空，中位位置不确定性为4角秒，软硬X射线带中位通量分别为约1.1E-12和9.0E-12 erg/cm2/s。