Skip to main content

Research Repository

Advanced Search

A Model for the Coupled Eruption of a Pseudostreamer and Helmet Streamer

Wyper, P.F.; Antiochos, S.K.; DeVore, C.R.; Lynch, B.J.; Karpen, J.T.; Kumar, P.

A Model for the Coupled Eruption of a Pseudostreamer and Helmet Streamer Thumbnail


S.K. Antiochos

C.R. DeVore

B.J. Lynch

J.T. Karpen

P. Kumar


A highly important aspect of solar activity is the coupling between eruptions and the surrounding coronal magnetic field topology, which determines the trajectory and morphology of the event and can even lead to sympathetic eruptions from multiple sources. In this paper, we report on a numerical simulation of a new type of coupled eruption, in which a coronal jet initiated by a large pseudostreamer filament eruption triggers a streamer-blowout coronal mass ejection (CME) from the neighboring helmet streamer. Our configuration has a large opposite-polarity region positioned between the polar coronal hole and a small equatorial coronal hole, forming a pseudostreamer flanked by the coronal holes and the helmet streamer. Further out, the pseudostreamer stalk takes the shape of an extended arc in the heliosphere. We energize the system by applying photospheric shear along a section of the polarity inversion line within the pseudostreamer. The resulting sheared-arcade filament channel develops a flux rope that eventually erupts as a classic coronal-hole-type jet. However, the enhanced breakout reconnection above the channel as the jet is launched progresses into the neighboring helmet streamer, partially launching the jet along closed helmet streamer field lines and blowing out the streamer top to produce a classic bubble-like CME. This CME is strongly deflected from the jet's initial trajectory and contains a mixture of open and closed magnetic field lines. We present the detailed dynamics of this new type of coupled eruption, its underlying mechanisms, and the implications of this work for the interpretation of in situ and remote-sensing observations.


Wyper, P., Antiochos, S., DeVore, C., Lynch, B., Karpen, J., & Kumar, P. (2021). A Model for the Coupled Eruption of a Pseudostreamer and Helmet Streamer. Astrophysical Journal, 909(1), Article 54.

Journal Article Type Article
Online Publication Date Mar 4, 2021
Publication Date 2021-03
Deposit Date Jun 14, 2021
Publicly Available Date Mar 4, 2022
Journal Astrophysical Journal
Print ISSN 0004-637X
Electronic ISSN 1538-4357
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 909
Issue 1
Article Number 54


Accepted Journal Article (5.2 Mb)

Copyright Statement
© 2021. The American Astronomical Society. All rights reserved.

You might also like

Downloadable Citations