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Author Yan, Limei ♦ Xia, Lidong ♦ Jiao, Fangran ♦ He, Jiansen
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ♦ ADVECTION ♦ ALFVEN WAVES ♦ CHROMOSPHERE ♦ JETS ♦ MAGNETIC RECONNECTION ♦ OSCILLATIONS ♦ PLASMOIDS ♦ SUN ♦ TELESCOPES ♦ VELOCITY
Abstract The chromospheric anemone jets with an inverse “Y” shape are ubiquitous, as revealed by the Solar Optical Telescope observations. These jets are considered to be consequences of chromospheric magnetic reconnections. Although these jets have been studied intensively, the dynamics and their driving causes remain unclear observationally. In this work, we report a case of a chromospheric jet showing complete observational evidence for the cause and consequence of chromospheric intermittent reconnection. The intermittent eruption of this jet shows two distinct quasi-periods, 50–60 s and 600–700 s. The short-period eruptions may be related to the plasmoid-induced reconnection, and the long-period ones may be interpreted as sequences of cycles of energy storage and release during magnetic reconnections. The observations also reveal Alfvénic waves with a mean period around 88 s and a maximum transverse displacement around 0.″26. The jet is hosted by a loop moving smoothly with a horizontal speed of ∼0.4 km s{sup −1}. Our results provide observational evidence supporting the magnetic reconnection model of the formation of the chromospheric jets with related products, in which the loop advection drives intermittent magnetic reconnections, and the reconnection outflows carrying plasmoids collide further with the ambient field lines and finally excite waves and jets.
ISSN 0004637X
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-05-01
Publisher Place United States
Journal Astrophysical Journal
Volume Number 804
Issue Number 1


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