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Title: FLOWS AND WAVES IN BRAIDED SOLAR CORONAL MAGNETIC STRUCTURES

We study the high frequency dynamics in the braided magnetic structure of an active region (AR 11520) moss as observed by the High-Resolution Coronal Imager (Hi-C). We detect quasi-periodic flows and waves in these structures. We search for high frequency dynamics while looking at power maps of the observed region. We find that shorter periodicities (30–60 s) are associated with small spatial scales which can be resolved by Hi-C only. We detect quasi-periodic flows with a wide range of velocities, from 13–185 km s{sup −1}, associated with braided regions. This can be interpreted as plasma outflows from reconnection sites. We also find short period and large amplitude transverse oscillations associated with the braided magnetic region. Such oscillations could be triggered by reconnection or such oscillations may trigger reconnection.
Authors:
; ;  [1]
  1. Indian Institute of Astrophysics, Bangalore 560 034 (India)
Publication Date:
OSTI Identifier:
22518813
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 801; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; IMAGES; INTERPLANETARY MAGNETIC FIELDS; OSCILLATIONS; PERIODICITY; PLASMA; RESOLUTION; SOLAR CORONA; SUN; ULTRAVIOLET RADIATION; VELOCITY