搜索类星体偏振位置角旋转的方法

arXiv - PHYS - Instrumentation and Methods for Astrophysics Pub Date : 2024-09-13 DOI:arxiv-2409.08674

S. S. Savchenko, D. A. Morozova, S. G. Jorstad, D. A. Blinov, G. A. Borman, A. A. Vasilyev, T. S. Grishina, A. V. Zhovtan, E. N. Kopatskaya, E. G. Larionova, I. S. Troitskiy, Yu. V. Troitskaya, E. V. Shishkina, E. A. Shkodkina

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引用次数: 0

摘要

对类星体的观测表明，来自类星体的辐射的偏振位置角会随着时间的推移而发生很大变化，其中包括角度发生有序变化的时期，称为旋转。该研究提出了一种方法来识别这类事件并评估其统计意义。以对 CTA 102、3C 454.3 和 OT081 等类星体的长期偏振观测为例，演示了该方法的操作。在对光曲线进行分析的过程中，发现了 51 次偏振位置角的旋转，结果表明，对于 CTA 102 和 3C 454.3，旋转主要朝一个方向。

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The Method of Searching for Rotations of the Polarization Position Angle of Quasars

Observations of quasars show that the polarization position angle of the emission coming from them varies greatly over time, including periods called rotations during which the angle changes in an orderly manner. The study proposes a method for identifying such events and assessing their statistical significance. The operation of the method is demonstrated using the example of long-term polarimetric observations of the blazars CTA 102, 3C 454.3, and OT 081. During the analysis of light curves, 51 rotations of the polarization position angle were found and it was shown that for CTA 102 and 3C 454.3 the rotations are predominantly oriented in one direction.

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arXiv - PHYS - Instrumentation and Methods for Astrophysics

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