干旱区生态环境知识资源中心(Arid): HEATING OF THE SOLAR CORONA BY ALFVEN WAVES: MAGNETOHYDRODYNAMIC CALCULATION OF THE HEIGHT TEMPERATURE PROFILE OF THE TRANSITION REGION

Arid

DOI	10.22364/mhd.55.3.4
	HEATING OF THE SOLAR CORONA BY ALFVEN WAVES: MAGNETOHYDRODYNAMIC CALCULATION OF THE HEIGHT TEMPERATURE PROFILE OF THE TRANSITION REGION
	Mishonov, T. M.; Maneva, Y. G.; Stoev, M., V; Varonov, A. M.
通讯作者	Mishonov, T. M.
来源期刊	MAGNETOHYDRODYNAMICS
ISSN	0024-998X
EISSN	1574-0579
出版年	2019
卷号	55 期号:3 页码:295-318
英文摘要	The mechanism of solar corona heating still remains unexplained, almost 80 years after the discovery of the million degree hot solar corona. Observations show that the temperature increases more than one order of magnitude in the transition region, at the boundary between the solar chromosphere and the solar corona. We give a detailed magnetohydrodynamic (MHD) calculation of the height dependence of temperature and solar wind velocity. The temperature arid solar wind velocity profiles are calculated for static frequency dependent spectral density of incoming MHD waves, no time dependent computer simulations have been performed. In our calculation we take into account only the Alfven wave (AW) polarization. Other modes (slow- and fast-magnetosonic waves) do not create cooling. A self-consistent calculation of the MHD wave propagation through a static background of fully ionized hydrogen plasma in a weak magnetic field is made. Heated by these MHD waves, the background plasma temperature increases leading to a strong plasma viscosity increase, which results in a more efficient; MHD wave absorption. Within this calculation, the width of the transition region is also evaluated by a maximum value of the temperature logarithmic derivative. Comparison of the calculated temperature profile with the available observational data show qualitative agreement. In such a way, after more than 70 years we return to the original Alfven idea [Alfven, H. 1947, MNRAS, 107, 211] that the solar corona is heated by AW.
类型	Article
语种	英语
国家	Bulgaria
收录类别	SCI-E
WOS记录号	WOS:000488977400004
WOS关键词	WIND ; MODEL ; ACCELERATION ; CHROMOSPHERE ; SPECTRUM
WOS类目	Mechanics ; Physics, Fluids & Plasmas
WOS研究方向	Mechanics ; Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217523
作者单位	St Clement Ohrid Univ Sofia, Fac Phys, 5 J Bourchier Blvd, BG-1164 Sofia, Bulgaria
推荐引用方式 GB/T 7714	Mishonov, T. M.,Maneva, Y. G.,Stoev, M., V,et al. HEATING OF THE SOLAR CORONA BY ALFVEN WAVES: MAGNETOHYDRODYNAMIC CALCULATION OF THE HEIGHT TEMPERATURE PROFILE OF THE TRANSITION REGION[J],2019,55(3):295-318.
APA	Mishonov, T. M.,Maneva, Y. G.,Stoev, M., V,&Varonov, A. M..(2019).HEATING OF THE SOLAR CORONA BY ALFVEN WAVES: MAGNETOHYDRODYNAMIC CALCULATION OF THE HEIGHT TEMPERATURE PROFILE OF THE TRANSITION REGION.MAGNETOHYDRODYNAMICS,55(3),295-318.
MLA	Mishonov, T. M.,et al."HEATING OF THE SOLAR CORONA BY ALFVEN WAVES: MAGNETOHYDRODYNAMIC CALCULATION OF THE HEIGHT TEMPERATURE PROFILE OF THE TRANSITION REGION".MAGNETOHYDRODYNAMICS 55.3(2019):295-318.