Imaging Preflare Broadband Pulsations in the Decimetric-metric Wavelengths

Imaging Preflare Broadband Pulsations in the Decimetric-metric Wavelengths

Preflare activities contain critical information about the precursors and causes of solar eruptions. Here we investigate the characteristics and origin of a group of broadband pulsations (BBPs) in the decimetric-metric wavelengths that took place during the preflare stage of the M7.1 flare on 2011 S...

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Veröffentlicht in:The Astrophysical journal 2023-06, Vol.950 (1), p.2
Hauptverfasser: Lv, Maoshui, Tan, Baolin, Zheng, Ruisheng, Wu, Zhao, Wang, Bing, Kong, Xiangliang, Chen, Yao
Format: Artikel
Sprache:eng
Schlagworte:
Astrophysics
Broadband
High temperature
Solar activity
Solar corona
Solar coronal mass ejections
Solar flares
Solar instruments
Solar radio emission
Temperature structure
Wavelengths
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Zusammenfassung:Preflare activities contain critical information about the precursors and causes of solar eruptions. Here we investigate the characteristics and origin of a group of broadband pulsations (BBPs) in the decimetric-metric wavelengths that took place during the preflare stage of the M7.1 flare on 2011 September 24. The event was recorded by multiple solar instruments, including the Nançay Radioheliograh, that measure the properties of the radio source. The BBPs started ∼24 minutes before the flare onset, extending from
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/accf92