Aslanyan, V. and Pontin, D. I. and Wyper, P. F. and Scott, R. B. and Antiochos, S. K. and DeVore, C. R. (2021) 'Effects of pseudostreamer boundary dynamics on heliospheric field and wind.', The astrophysical journal., 909 (1). p. 10.
Interchange reconnection has been proposed as a mechanism for the generation of the slow solar wind, and a key contributor to determining its characteristic qualities. In this paper we study the implications of interchange reconnection for the structure of the plasma and field in the heliosphere. We use the Adaptively Refined Magnetohydrodynamic Solver to simulate the coronal magnetic evolution in a coronal topology containing both a pseudostreamer and helmet streamer. We begin with a geometry containing a low-latitude coronal hole that is separated from the main polar coronal hole by a pseudostreamer. We drive the system by imposing rotating flows at the solar surface within and around the low-latitude coronal hole, which leads to a corrugation (at low altitudes) of the separatrix surfaces that separate open from closed magnetic flux. Interchange reconnection is induced both at the null points and separators of the pseudostreamer, and at the global helmet streamer. We demonstrate that a preferential occurrence of interchange reconnection in the "lanes" between our driving cells leads to a filamentary pattern of newly opened flux in the heliosphere. These flux bundles connect to but extend far from the separatrix-web (S-Web) arcs at the source surface. We propose that the pattern of granular and supergranular flows on the photosphere should leave an observable imprint in the heliosphere.
|Keywords:||Slow solar wind; Solar magnetic reconnection; Magnetohydrodynamics; Solar corona|
|Full text:||(VoR) Version of Record|
Available under License - Creative Commons Attribution 4.0.
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|Publisher Web site:||https://doi.org/10.3847/1538-4357/abd6e6|
|Publisher statement:||Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.|
|Date accepted:||24 December 2020|
|Date deposited:||03 March 2021|
|Date of first online publication:||01 March 2021|
|Date first made open access:||03 March 2021|
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