Generation of solar spicules and subsequent atmospheric heating
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neration of solar spicules and subsequent atmospheric heating *
CHEN YaJie , SAMANTA Tanmoy & TIAN Hui School of Earth and Space Sciences, Peking University, Beijing 100871, China Received January 20, 2020; accepted March 5, 2020; published online April 3, 2020
Citation:
Chen Y J, Samanta T, Tian H. Generation of solar spicules and subsequent atmospheric heating. Sci China Tech Sci, 2020, 63, https://doi.org/10.1007/ s11431-020-1555-6
The temperature drops from ~16 million Kelvin at the core of the Sun to 5700 K at the solar surface (photosphere). However, the temperature increases with height above the photosphere, reaching one million degrees or more in the solar corona. Due to this high temperature, the corona naturally expands to the interplanetary space, forming the solar wind. What causes the temperature increase in the corona is one of the biggest mysteries in astronomy. There are suggestions that small-scale dynamics in the chromosphere, such as ultraviolet bursts [1] and spicules [2], might play an important role in coronal heating. Spicules are magnetized jet-like plasma features with widths of
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