Helical blowout jets in the sun: untwisting and propagation of waves

E.J. Lee; V. Archontis; A.W. Hood

doi:10.1088/2041-8205/798/1/L10

Helical blowout jets in the sun: untwisting and propagation of waves

E.J. Lee, V. Archontis, A.W. Hood

Applied Mathematics

Research output: Contribution to journal › Article › peer-review

Abstract

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^-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.

Original language	English
Article number	L10
Pages (from-to)	1-6
Number of pages	6
Journal	Astrophysical Journal Letters
Volume	798
Issue number	1
Early online date	16 Dec 2014
DOIs	https://doi.org/10.1088/2041-8205/798/1/L10
Publication status	Published - 1 Jan 2015

Keywords

Magnetohydrodynamics (MHD)
Sun: activity
Sun: interior
Sun: magnetic fields

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10.1088/2041-8205/798/1/L10

Archontis_2015_TAJL_Helical
© 2015. The American Astronomical Society. All rights reserved. Reproduced in accordance with the AAS copyright policy.
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abstract = "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-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 Alfv{\'e}n waves in the corona.",

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AU - Lee, E.J.

AU - Archontis, V.

AU - Hood, A.W.

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N2 - 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-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.

AB - 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-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.

KW - Magnetohydrodynamics (MHD)

KW - Sun: activity

KW - Sun: interior

KW - Sun: magnetic fields

U2 - 10.1088/2041-8205/798/1/L10

DO - 10.1088/2041-8205/798/1/L10

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SN - 2041-8205

VL - 798

SP - 1

EP - 6

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - L10

ER -

Helical blowout jets in the sun: untwisting and propagation of waves

Abstract

Keywords

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