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Title: HELICAL BLOWOUT JETS IN THE SUN: UNTWISTING AND PROPAGATION OF WAVES

We report on a numerical experiment of the recurrent onset of helical ''blowout'' jets in an emerging flux region. We find that these jets are running with velocities of ∼100-250 km s{sup –1} and they transfer a vast amount of heavy plasma into the outer solar atmosphere. During their emission, they undergo an untwisting motion as a result of reconnection between the twisted emerging and the non-twisted pre-existing magnetic field in the solar atmosphere. For the first time in the context of blowout jets, we provide direct evidence that their untwisting motion is associated with the propagation of torsional Alfvén waves in the corona.
Authors:
; ;  [1]
  1. School of Mathematics and Statistics, University of St. Andrews, St. Andrews KY169SS (United Kingdom)
Publication Date:
OSTI Identifier:
22364743
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 798; 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; ALFVEN WAVES; BLOWOUTS; MAGNETIC FIELDS; MAGNETIC FLUX; MAGNETOHYDRODYNAMICS; PLASMA; PLASMA JETS; SOLAR CORONA; SUN; VELOCITY; WAVE PROPAGATION