Search Results - Kejia Lee

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  1. 1
    Propagation-induced Frequency-dependent Polarization Properties of Fast Radio Burst

    Propagation-induced Frequency-dependent Polarization Properties of Fast Radio Burst by Wei-Yang Wang, Xiaohui Liu, Dongzi Li, Bing Zhang, Chen-Hui Niu, Jifeng Liu, Renxin Xu, Weiwei Zhu, Kejia Lee

    Published 2025-01-01

    Frequency-dependent polarization properties provide crucial insights into the radiation mechanisms and magnetic environments of fast radio bursts (FRBs). We explore an analytical solution of radiative transfer of the polarization properties of FRBs as a strong incoming wave propagates in a homogeneo...

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  2. 2
    H I Absorption Line and Anomalous Dispersion in the Radio Pulses of PSR B1937+21

    H I Absorption Line and Anomalous Dispersion in the Radio Pulses of PSR B1937+21 by Jinchen Jiang, Shunshun Cao, Kejia Lee, Bojun Wang, Heng Xu, Siyuan Chen, Yanjun Guo, Peng Jiang, Weicong Jing, Jiguang Lu, Jiangwei Xu, Renxin Xu, Zihan Xue

    Published 2025-01-01

    We use the Five-hundred-meter Aperture Spherical radio Telescope to observe the bright millisecond pulsar PSR B1937+21 (J1939+2134) and record the data in the band from 1.0 to 1.5 GHz. We measure the neutral hydrogen (H I ) emission and absorption lines near 1420 MHz ( λ  ≃ 21 cm). We derive the kin...

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  3. 3
    Polarization Position Angle Swing and the Rotating Vector Model of Repeating Fast Radio Bursts

    Polarization Position Angle Swing and the Rotating Vector Model of Repeating Fast Radio Bursts by Xiaohui Liu, Heng Xu, Jiarui Niu, Yongkun Zhang, Jinchen Jiang, Dejiang Zhou, Jinlin Han, Weiwei Zhu, Kejia Lee, Di Li, Wei-Yang Wang, Bing Zhang, Xuelei Chen, Jia-Wei Luo, Rui Luo, Chenhui Niu, Yuanhong Qu, Bojun Wang, Fayin Wang, Pei Wang, Tiancong Wang, Qin Wu, Ziwei Wu, Jiangwei Xu, Yuan-Pei Yang, Jun-Shuo Zhang

    Published 2025-01-01

    Fast radio bursts (FRBs), typically highly polarized, usually have a nearly constant polarization position angle (PA) during each burst. Some bursts show significant PA variations, and one of them was claimed to have a PA variation pattern consistent with the prediction of the rotating vector model...

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