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1篇 您的检索式：作者名="Parida Hashim"

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		题名	作者	年代	出处	被引量
	1	Magneto-acoustic oscillations observed in a solar plage region显示文摘We gave an extensive study for the quasi-periodic perturbations on the time profiles of the line of sight(LOS) magnetic field in 10 × 10 sub-areas in a solar plage region(corresponds to a facula on the photosphere).The perturbations are found to be associated with the enhancement of He I 10830 A absorption in a moss region,which is connected to loops with million-degree plasma.FFT analysis to the perturbations gives a kind of spectrum similar to that of Doppler velocity:a number of discrete periods around 5 minutes.The amplitudes of the magnetic perturbations are found to be proportional to magnetic field strength over these sub-areas.In addition,magnetic perturbations lag behind a quarter of the cycle in the phase with respect to the p-mode Doppler velocity.We show that the relationships can be well explained with an MHD solution for the magneto-acoustic oscillations in high-β plasma.Observational analysis also shows that,for the two regions with the stronger and weaker magnetic field,the perturbations are always anti-phased.All findings show that the magnetic perturbations are actually magneto-acoustic oscillations on the solar surface,the photosphere,powered by p-mode oscillations.The findings may provide a new diagnostic tool for exploring the relationship between magneto-acoustic oscillations and the heating of the solar upper atmosphere,as well as their role in helioseismology.	Haisheng Ji Parida Hashim Zhenxiang Hong Zhe Xu Jinhua Shen Kaifan Ji Wenda Cao	2021	Research in Astronomy and Astrophysics2021，21，7：	0

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