NAOC Open IR
Resonant Heating of Ions by Parallel Propagating Alfvén Waves in Solar Coronal Holes
Zhang Tianxi; Wang Jingxiu; Xiaol Chijie
2005
Source Publication中国天文和天体物理学报:英文版
ISSN1009-9271
Volume5.0Issue:003Pages:285
AbstractResonant heating of H, O^+5, and Mg^+9 by parallel propagating ioncyclotron Alfvén waves in solar coronal holes at a heliocentric distance is studied using the heating rate derived from the quasilinear theory. It is shown that the particle-Allyén-wave interaction is a significant microscopic process. The temperatures of the ions are rapidly increased up to the observed order in only microseconds, which implies that simply inserting the quasilinear heating rate into the fluid/MHD energy equation to calculate the radial dependence of ion temperatures may cause errors as the time scales do not match. Different species ions are heated by Alfvén waves with a power law spectrum in approximately a mass order.To heat O^+5 over Mg^+9 as measured by the Ultraviolet Coronagraph Spectrometer (UVCS) in the solar coronal hole at a region ≥ 1.9R⊙, the energy density of Alfvén waves with a frequency close to the O^+5-cyclotron frequency must be at least double of that at the Mg^+9-cyclotron frequency. With an appropriate wave-energy spectrum, the heating of H, O^+5 and Mg^+9 can be consistent with the UVCS measurements in solar coronal holes at a heliocentric distance.
Keyword共振加热 平行传播 离子波 太阳日冕空穴
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/69225
Collection中国科学院国家天文台
Affiliation中国科学院国家天文台
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang Tianxi,Wang Jingxiu,Xiaol Chijie. Resonant Heating of Ions by Parallel Propagating Alfvén Waves in Solar Coronal Holes[J]. 中国天文和天体物理学报:英文版,2005,5.0(003):285.
APA Zhang Tianxi,Wang Jingxiu,&Xiaol Chijie.(2005).Resonant Heating of Ions by Parallel Propagating Alfvén Waves in Solar Coronal Holes.中国天文和天体物理学报:英文版,5.0(003),285.
MLA Zhang Tianxi,et al."Resonant Heating of Ions by Parallel Propagating Alfvén Waves in Solar Coronal Holes".中国天文和天体物理学报:英文版 5.0.003(2005):285.
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