Investigating the effect of source contamination on eXTP/SFA

Juan Zhang; Gang Li; Mingyu Ge; Christian Kirsch; Maximilian Lorenz; Joern Wilms; Liqiang Qi; Lizhi Sheng; Yi-Jung Yang; Thomas Dauser; Yupeng Xu; Fangju Lu; Yanji Yang; Yusa Wang; Yong Chen

doi:10.1117/12.2561944

13 December 2020 Investigating the effect of source contamination on eXTP/SFA

Juan Zhang, Gang Li, Mingyu Ge, Christian Kirsch, Maximilian Lorenz, Joern Wilms, Liqiang Qi, Lizhi Sheng, Yi-Jung Yang, Thomas Dauser, Yupeng Xu, Fangju Lu, Yanji Yang, Yusa Wang, Yong Chen

Author Affiliations +

Proceedings Volume 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray; 114442I (2020) https://doi.org/10.1117/12.2561944
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

The Spectroscopy Focusing Array (SFA) onboard the enhanced X-ray Timing and Polarimetry (eXTP) observatory consists of 9 modules, each comprising a Wolter type I telescope with a field of view (FOV) around 16 arcminutes and a focal plane silicon drift detector (SDD) with 19 hexagonal pixels. Due to the large size of each individual SDD pixel (each pixel corresponds to an area of ∼ 3.6 arcminutes in diameter) and the limited pixel number, SFA can not obtain a real image of the observed region like many other X-ray imaging telescopes. Thus, contamination from nearby bright sources needs to be considered when we study the properties of the target source. We simulate such contaminations using the SIXTE simulator. In this paper we present the results by taking observations of the millisecond pulsar PSR J0437–4715 as an example, and discuss the cases for contamination on background or target source respectively.

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Juan Zhang, Gang Li, Mingyu Ge, Christian Kirsch, Maximilian Lorenz, Joern Wilms, Liqiang Qi, Lizhi Sheng, Yi-Jung Yang, Thomas Dauser, Yupeng Xu, Fangju Lu, Yanji Yang, Yusa Wang, and Yong Chen "Investigating the effect of source contamination on eXTP/SFA", Proc. SPIE 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 114442I (13 December 2020); https://doi.org/10.1117/12.2561944

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