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092141

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DataCite Commons2025-08-05 更新2026-05-03 收录
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http://esdcdoi.esac.esa.int/doi/html/data/astronomy/xmm-newton/092141.html
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We propose XMM-Newton observations of two radio-loud magnetars XTE J1810-197and Swift J1818.0-1607 which are still recovering from their most-recentoutbursts. XTE J1810-197 is still exhibiting a soft X-ray flux a factor 2 largerthan the nominal value due to the continued existence of a thermal hot spot.The source is currently displaying unique temporal properties not observedbefore neither in outburst nor quiescence. On the other hand SwiftJ1818.0-1607 has decayed by 2 order of magnitude so far solely driven by an areashrinkage with no sign of any cooling an expected property of most magnetartheoretical scenarios. Hence establishing the X-ray evolution of these twosources towards quiescence is crucial for a better understanding of the physical driver of magnetar outbursts. [truncated! Please see actual data for full text]

我们提出针对两颗仍处于最新爆发后恢复阶段的射电强磁星(magnetar)XTE J1810-197与Swift J1818.0-1607的XMM-牛顿(XMM-Newton)望远镜观测计划。其中XTE J1810-197因持续存在热斑结构,其软X射线通量为标称值的2倍;该源当前展现出此前在爆发或宁静阶段均未观测到的独特时域特性。另一方面,Swift J1818.0-1607迄今已衰减两个数量级,其辐射衰减仅由作用区域收缩驱动,未观测到任何冷却迹象——这一特性与多数磁星理论模型的预期相符。因此,厘清这两颗源向宁静态演化的X射线演化规律,对于深入理解磁星爆发的物理驱动机制具有关键意义。[文本已截断,完整内容请参阅实际数据集]
提供机构:
European Space Agency
创建时间:
2025-08-05
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