Excitation of Multiperiodic Kink Motions in Solar Flare Loops: Possible Application to Quasiperiodic Pulsations
Excitation of Multiperiodic Kink Motions in Solar Flare Loops: Possible Application to Quasiperiodic Pulsations
复制标题
太阳耀斑环中多周期扭结运动的激发:在准周期脉动中的可能应用
DOI:
10.3847/2041-8213/acb3c6
复制
发表时间:
2023-01
期刊:
影响因子:
--
通讯作者:
Shengju Yuan
中科院分区:
文献类型:
--
作者:
Mijie Shi;Bo Li;Shao-Xia Chen;Mingzhe Guo;Shengju Yuan
Magnetohydrodynamic (MHD) waves are often invoked to interpret quasiperiodic pulsations (QPPs) in solar flares. We study the response of a straight flare loop to a kink-like velocity perturbation using three-dimensional MHD simulations and forward model the microwave emissions using the fast gyrosynchrotron code. Kink motions with two periodicities are simultaneously generated, with the long-period component (P L = 57 s) being attributed to the radial fundamental kink mode and the short-period component (P S = 5.8 s) to the first leaky kink mode. Forward modeling results show that the two-periodic oscillations are detectable in the microwave intensities for some lines of sight. Increasing the beam size to (1″)2 does not wipe out the microwave oscillations. We propose that the first leaky kink mode is a promising candidate mechanism to account for short-period QPPs. Radio telescopes with high spatial resolutions can help distinguish between this new mechanism and such customary interpretations as sausage modes.
登录
查看更多内容
DOI:
10.1086/593203
发表时间:
2008-09
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
J. Terradas;J. Andries;J. Andries;Marcel Goossens;I. Arregui;R. Oliver;J. Ballester
通讯作者:
J. Terradas;J. Andries;J. Andries;Marcel Goossens;I. Arregui;R. Oliver;J. Ballester
DOI:
10.3847/1538-4357/abd7f3
发表时间:
2020-12
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Shao-Xia Chen;Bo Li;T. Doorsselaere;M. Goossens;Hui Yu;M. Geeraerts
通讯作者:
Shao-Xia Chen;Bo Li;T. Doorsselaere;M. Goossens;Hui Yu;M. Geeraerts
影响因子:
10.3
作者:
I. Zimovets;J. McLaughlin;A. Srivastava;D. Kolotkov;A. Kuznetsov;E. Kupriyanova;I. Cho;A. Inglis-A.-Ingli
通讯作者:
I. Zimovets;J. McLaughlin;A. Srivastava;D. Kolotkov;A. Kuznetsov;E. Kupriyanova;I. Cho;A. Inglis-A.-Ingli
DOI:
10.1007/s11207-010-9518-3
发表时间:
2009-10
期刊:
--
影响因子:
--
作者:
I. Zimovets;A. Struminsky
通讯作者:
I. Zimovets;A. Struminsky
DOI:
10.1086/171911
发表时间:
1992-11
期刊:
The Astrophysical Journal
影响因子:
--
作者:
A. Hassam
通讯作者:
A. Hassam