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Title: MICROWAVE QUASI-PERIODIC PULSATIONS IN MULTI-TIMESCALES ASSOCIATED WITH A SOLAR FLARE/CME EVENT

Abstract

Microwave observations of quasi-periodic pulsations (QPPs) in multi-timescales at the Solar Broadband Radio Spectrometer in Huairou (SBRS/Huairou) on 2006 December 13 are confirmed to be associated with an X3.4 flare/coronal mass ejection (CME) event. It is most remarkable that the timescales of QPPs are distributed in a broad range from hectoseconds (very long period pulsation, VLP, P>100 s), decaseconds (long period pulsation, LPP, 10 < P < 100 s), a few seconds (short period pulsation, SPP, 1 < P < 10 s), deciseconds (slow very short period pulsation, slow-VSP, 0.1 < P < 1.0 s), to centiseconds (fast very short period pulsation, fast-VSP, P < 0.1 s), and form a broad hierarchy. The statistical distribution of QPPs in logarithmic period-duration space indicates that all the QPPs can be classified into two groups: group I includes VLP, LPP, SPP, and some slow-VSPs distributed approximately around a line; group II includes fast-VSP and most of the slow-VSPs dispersively distributed away from the above line. This feature implies that the generation mechanism of group I is different from group II. Group I is possibly related to some MHD oscillations in magnetized plasma loops in the active region; e.g., VLPs may be generated bymore » standing slow sausage mode coupling, resonating with the underlying photospheric 5 minute oscillation, with the modulation amplified and forming the main framework of the whole flare/CME process; LPPs, SPPs, and some slow-VSPs are most likely to be caused by standing fast modes or LRC-circuit resonance in current-carrying plasma loops. Group II is possibly generated by modulations of resistive tearing-mode oscillations in electric current-carrying flaring loops.« less

Authors:
; ;
Publication Date:
OSTI Identifier:
21467219
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 723; Journal Issue: 1; Other Information: DOI: 10.1088/0004-637X/723/1/25; Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ELECTRIC CURRENTS; MAGNETOHYDRODYNAMICS; MICROWAVE RADIATION; PERIODICITY; PULSATIONS; SOLAR FLARES; SPECTROMETERS; SUN; TEARING INSTABILITY; CURRENTS; ELECTROMAGNETIC RADIATION; FLUID MECHANICS; HYDRODYNAMICS; INSTABILITY; MAIN SEQUENCE STARS; MEASURING INSTRUMENTS; MECHANICS; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES; RADIATIONS; SOLAR ACTIVITY; STARS; STELLAR ACTIVITY; STELLAR FLARES; VARIATIONS

Citation Formats

Baolin, Tan, Yin, Zhang, Chengming, Tan, and Liu Yuying, E-mail: bltan@nao.cas.c. MICROWAVE QUASI-PERIODIC PULSATIONS IN MULTI-TIMESCALES ASSOCIATED WITH A SOLAR FLARE/CME EVENT. United States: N. p., 2010. Web. doi:10.1088/0004-637X/723/1/25.
Baolin, Tan, Yin, Zhang, Chengming, Tan, & Liu Yuying, E-mail: bltan@nao.cas.c. MICROWAVE QUASI-PERIODIC PULSATIONS IN MULTI-TIMESCALES ASSOCIATED WITH A SOLAR FLARE/CME EVENT. United States. https://doi.org/10.1088/0004-637X/723/1/25
Baolin, Tan, Yin, Zhang, Chengming, Tan, and Liu Yuying, E-mail: bltan@nao.cas.c. 2010. "MICROWAVE QUASI-PERIODIC PULSATIONS IN MULTI-TIMESCALES ASSOCIATED WITH A SOLAR FLARE/CME EVENT". United States. https://doi.org/10.1088/0004-637X/723/1/25.
@article{osti_21467219,
title = {MICROWAVE QUASI-PERIODIC PULSATIONS IN MULTI-TIMESCALES ASSOCIATED WITH A SOLAR FLARE/CME EVENT},
author = {Baolin, Tan and Yin, Zhang and Chengming, Tan and Liu Yuying, E-mail: bltan@nao.cas.c},
abstractNote = {Microwave observations of quasi-periodic pulsations (QPPs) in multi-timescales at the Solar Broadband Radio Spectrometer in Huairou (SBRS/Huairou) on 2006 December 13 are confirmed to be associated with an X3.4 flare/coronal mass ejection (CME) event. It is most remarkable that the timescales of QPPs are distributed in a broad range from hectoseconds (very long period pulsation, VLP, P>100 s), decaseconds (long period pulsation, LPP, 10 < P < 100 s), a few seconds (short period pulsation, SPP, 1 < P < 10 s), deciseconds (slow very short period pulsation, slow-VSP, 0.1 < P < 1.0 s), to centiseconds (fast very short period pulsation, fast-VSP, P < 0.1 s), and form a broad hierarchy. The statistical distribution of QPPs in logarithmic period-duration space indicates that all the QPPs can be classified into two groups: group I includes VLP, LPP, SPP, and some slow-VSPs distributed approximately around a line; group II includes fast-VSP and most of the slow-VSPs dispersively distributed away from the above line. This feature implies that the generation mechanism of group I is different from group II. Group I is possibly related to some MHD oscillations in magnetized plasma loops in the active region; e.g., VLPs may be generated by standing slow sausage mode coupling, resonating with the underlying photospheric 5 minute oscillation, with the modulation amplified and forming the main framework of the whole flare/CME process; LPPs, SPPs, and some slow-VSPs are most likely to be caused by standing fast modes or LRC-circuit resonance in current-carrying plasma loops. Group II is possibly generated by modulations of resistive tearing-mode oscillations in electric current-carrying flaring loops.},
doi = {10.1088/0004-637X/723/1/25},
url = {https://www.osti.gov/biblio/21467219}, journal = {Astrophysical Journal},
issn = {0004-637X},
number = 1,
volume = 723,
place = {United States},
year = {Mon Nov 01 00:00:00 EDT 2010},
month = {Mon Nov 01 00:00:00 EDT 2010}
}