FLOWS AND WAVES IN BRAIDED SOLAR CORONAL MAGNETIC STRUCTURES

Journal Article · Sun Mar 01 00:00:00 EST 2015 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/801/1/L2· OSTI ID:22518813

Pant, V.; Datta, A.

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.

• OSTI ID: 22518813
• Journal Information: Astrophysical Journal Letters, Vol. 801, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
IMAGES
INTERPLANETARY MAGNETIC FIELDS
OSCILLATIONS
PERIODICITY
PLASMA
RESOLUTION
SOLAR CORONA
SUN
ULTRAVIOLET RADIATION
VELOCITY