STOCHASTIC TRANSIENTS AS A SOURCE OF QUASI-PERIODIC PROCESSES IN THE SOLAR ATMOSPHERE

	STOCHASTIC TRANSIENTS AS A SOURCE OF QUASI-PERIODIC PROCESSES IN THE SOLAR ATMOSPHERE
	Yuan, Ding 1,2; Su, Jiangtao2 ; Jiao, Fangran 3; Walsh, Robert W.1
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	2016-06-01
卷号	224 期号:2
关键词	magnetohydrodynamics (MHD) Sun: atmosphere Sun: corona Sun: oscillations waves
英文摘要	Solar dynamics and turbulence occur at all heights of the solar atmosphere and could be described as stochastic processes. We propose that finite-lifetime transients recurring at a certain place could trigger quasi-periodic processes in the associated structures. In this study, we developed a mathematical model for finite-lifetime and randomly occurring transients, and found that quasi-periodic processes with periods longer than the timescale of the transients, are detectable intrinsically in the form of trains. We simulate their propagation in an empirical solar atmospheric model with chromosphere, transition region, and corona. We found that, due to the filtering effect of the chromospheric cavity, only the resonance period of the acoustic resonator is able to propagate to the upper atmosphere; such a scenario is applicable to slow magnetoacoustic waves in sunspots and active regions. If the thermal structure of the atmosphere is less wild and acoustic resonance does not take place, the long-period oscillations could propagate to the upper atmosphere. Such a case would be more likely to occur in polar plumes.
收录类别	SCI
语种	英语
WOS记录号	WOS:000381013200017
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5286]
专题	国家天文台_太阳物理研究部
作者单位	1.Univ Cent Lancashire, Jeremiah Horrocks Inst, Preston PR1 2HE, Lancs, England 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China 3.Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Ding,Su, Jiangtao,Jiao, Fangran,et al. STOCHASTIC TRANSIENTS AS A SOURCE OF QUASI-PERIODIC PROCESSES IN THE SOLAR ATMOSPHERE[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2016,224(2).
APA	Yuan, Ding,Su, Jiangtao,Jiao, Fangran,&Walsh, Robert W..(2016).STOCHASTIC TRANSIENTS AS A SOURCE OF QUASI-PERIODIC PROCESSES IN THE SOLAR ATMOSPHERE.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,224(2).
MLA	Yuan, Ding,et al."STOCHASTIC TRANSIENTS AS A SOURCE OF QUASI-PERIODIC PROCESSES IN THE SOLAR ATMOSPHERE".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 224.2(2016).