利用 IXPE 观测对 Swift J151857.0-572147 进行极化研究

IF 1.8 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Research in Astronomy and Astrophysics Pub Date : 2024-09-12 DOI:10.1088/1674-4527/ad6edf

Yu-Shan Ling, Fei Xie, Ming-Yu Ge and Fabio La Monaca

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引用次数: 0

摘要

我们将对来自一个新发现的瞬变源的成像 X 射线偏振探测仪观测数据进行分析：Swift J151857.0-572147。获得的偏振度（PD）和偏振角分别为 0.3% ± 0.3% 和 -24° ± 26°（2-8keV），置信度误差在 68% 以内，偏振结果在所有能量段都低于 MDP99，2-8keV 能量范围内的偏振度上限为 0.8%。在这次观测中没有发现准周期振荡（QPO）。偏振和 QPO 分析支持了源处于高软状态的假设，结果与薄吸积盘模型的预测一致。

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Polarization Study of Swift J151857.0–572147 with IXPE Observation

We present an analysis of the Imaging X-ray Polarimetry Explorer observation from a newly discovered transient source: Swift J151857.0–572147. The obtained polarization degree (PD) and angle are 0.3% ± 0.3% and −24° ± 26° respectively in 2–8 keV within 68% confidence level errors, and polarization results are below MDP99 in all energy bins, with the upper limit on PD of 0.8% in the 2–8 keV energy range. No quasi-periodic oscillations (QPOs) are detected in this observation. The polarization and QPO analyses support the hypothesis that the source was in the high soft state, and the results are consistent with predictions for a thin accretion disk model.

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来源期刊

Research in Astronomy and Astrophysics 地学天文-天文与天体物理

CiteScore

3.20

自引率

16.70%

发文量

2599

审稿时长

6.0 months

期刊介绍： Research in Astronomy and Astrophysics (RAA) is an international journal publishing original research papers and reviews across all branches of astronomy and astrophysics, with a particular interest in the following topics: -large-scale structure of universe formation and evolution of galaxies- high-energy and cataclysmic processes in astrophysics- formation and evolution of stars- astrogeodynamics- solar magnetic activity and heliogeospace environments- dynamics of celestial bodies in the solar system and artificial bodies- space observation and exploration- new astronomical techniques and methods