Linearly Polarized Coherent Emission from Relativistic Magnetized Ion-Electron Shocks

被引：8

作者：

Iwamoto, Masanori ^{[1
,2
]}

Matsumoto, Yosuke ^{[3
]}

Amano, Takanobu ^{[4
]}

Matsukiyo, Shuichi ^{[2
]}

Hoshino, Masahiro ^{[4
]}

机构：

[1] Kyoto Univ, Yukawa Inst Theoret Phys, Kitashirakawa Oiwakecho,Sakyo Ku, Kyoto 6068502, Japan

[2] Kyushu Univ, Fac Engn Sci, 6-1 Kasuga koen, Kasuga, Fukuoka 8168580, Japan

[3] Chiba Univ, Inst Adv Acad Res, 1-33 Yayoi,Inage ku, Chiba 2638522, Japan

[4] Univ Tokyo, Dept Earth & Planetary Sci, 7-3-1 Hongo,Bunkyo ku, Tokyo 1130033, Japan

来源：

PHYSICAL REVIEW LETTERS | 2024年 / 132卷 / 03期

关键词：

SYNCHROTRON MASER EMISSION; FAST RADIO-BURSTS; PARTICLE-ACCELERATION; RADIATION; PLASMAS; WAVES;

D O I：

10.1103/PhysRevLett.132.035201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Fast radio bursts (FRBs) are millisecond transient astrophysical phenomena and bright at radio frequencies. The emission mechanism, however, remains unsolved yet. One scenario is a coherent emission associated with the magnetar flares and resulting relativistic shock waves. Here, we report unprecedentedly large-scale simulations of relativistic magnetized ion-electron shocks, showing that strongly linearpolarized electromagnetic waves are excited. The kinetic energy conversion to the emission is so efficient that the wave amplitude is responsible for the brightness. We also find a polarization angle swing reflecting shock front modulation, implicating the polarization property of some repeating FRBs. The results support the shock scenario as an origin of the FRBs.

引用

页数：6

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