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Chinese Solar Telescope Reveals Acceleration of Magnetic Reconnection From a Nearby Filament Eruption
Science & Technology

Chinese Solar Telescope Reveals Acceleration of Magnetic Reconnection From a Nearby Filament Eruption

Two teams of fibrils, marked L2 and L4, converge and reconnect with one another. Two units of newly fashioned fibrils, marked L1 and L3, then seem and retract from the reconnection area. Credit score: LI Leping

Magnetic reconnection refers back to the reconfiguration of magnetic area geometry. It performs an elemental position within the fast launch of magnetic power and its conversion to different varieties of power in magnetized plasma techniques all through the universe.

Researchers led by Dr. LI Leping from the Nationwide Astronomical Observatories of the Chinese Academy of Sciences (NAOC) analyzed the evolution of magnetic reconnection and its close by filament. The end result instructed that reconnection is considerably accelerated by the propagating disturbance brought on by the adjoining filament eruption.

The research was revealed in The Astrophysical Journal.

The New Vacuum Solar Telescope (NVST) is a 1-m ground-based photo voltaic telescope, situated within the Fuxian Solar Observatory of the Yunnan Astronomical Observatories of the Chinese Academy of Sciences (YNAO). It gives observations of the photo voltaic tremendous buildings and their evolution within the photo voltaic decrease environment.

The NVST noticed the lively area 11696 on March 15, 2013, within the Hα channel, centered at 6562.8 Å with a bandwidth of 0.25 Å.

Using the NVST Hα photos with larger spatial decision, the researchers studied the evolution of magnetic loops and their close by filament within the lively area, combining the Atmospheric Imaging Meeting (AIA) excessive ultraviolet (EUV) photos and Helioseismic and Magnetic Imager (HMI) line-of-sight magnetograms on board the Solar Dynamic Observatory (SDO).

In NVST Hα photos, two teams of fibrils converged and interacted with one another. Two units of newly fashioned fibrils then appeared and retracted from the interplay area.

“The end result gives clear proof of magnetic reconnection,” mentioned Prof. Hardi Peter from the Max Planck Institute for Solar System Analysis (MPS), a co-author of the research. In AIA EUV photos, the present sheet fashioned repeatedly within the reconnection area within the lower-temperature channels, and plasmoids appeared within the present sheet and propagated alongside it bidirectionally.

A filament was situated to the southeast of the reconnection area. It erupted and pushed away the loops protecting the reconnection area. “The filament eruption led to a disturbance propagating outward throughout the reconnection area,” mentioned Dr. LI Leping, the primary writer of this research.

The present sheet subsequently grew to become shorter and brighter, with a bigger reconnection price. It appeared within the AIA higher-temperature channels. Within the present sheet, extra and warmer plasmoids fashioned.

“In contrast with the observations earlier than the filament eruption throughout the identical time intervals, extra thermal and kinetic power was transformed by means of reconnection after the filament eruption,” mentioned Dr. LI. “The reconnection was thus considerably accelerated by the propagating disturbance brought on by the close by filament eruption.”

Reference: “Magnetic Reconnection between Loops Accelerated By a Nearby Filament Eruption” by Leping Li, Hardi Peter, Lakshmi Pradeep Chitta, Hongqiang Music, Kaifan Ji and YongYuan Xiang, 25 February 2021, The Astrophysical Journal.

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