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Effect of soft flares on XMM-Newton EPIC-pn timing mode data

机译:软耀斑对XMM-Newton Epic-PN定时模式数据的影响

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The EPIC-pn CCD Camera on board the ESA X-ray observatory XMM-Newton is a very sensitive and versatile instrument with many observing modes. One of the modes, the timing mode, was designed so that a time resolution of 0.029 milliseconds can be achieved. This mode is important for observing bright variable sources with a very high time resolution. Up to now the it has only been possible to use the spectra down to 300-400 eV hi this mode. Below this energy the data appears to be affected by soft flares which are caused by stack overflows generated by high energy particles. We present a method that can be used to mitigate the effect these flares have on the data and discuss the improvement that this brings to the timing mode spectra. This new method will at last make it possible to get spectra down to the lowest energies detectable in this mode. This is particularly interesting for timing studies of isolated neutron stars and other variable objects, such as magnetic CVs, with very soft spectra.
机译:ESA X射线天文台XMM-Newton的EPIC-PN CCD摄像机是一种非常敏感和多功能的仪器,具有许多观察模式。其中一个模式,定时模式设计成使得可以实现0.029毫秒的时间分辨率。此模式对于观察具有非常高的时间分辨率的明亮可变源非常重要。到目前为止,它只可以使用光谱到300-400ev此模式。低于这种能量,数据似乎受到软耀斑的影响,软耀斑是由高能粒子产生的堆叠溢出引起的。我们提出了一种方法,可以用于减轻这些耀斑对数据的效果,并讨论这种引发到定时模式光谱的改进。此新方法终于将使光谱降至该模式下可检测到的最低能量。对于隔离中子恒星和其他可变物体的定时研究,例如磁性CVS,具有非常柔软的光谱,这尤其有趣。

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