ARTop: an open-source tool for measuring active region topology at the solar photosphere

Alielden, K., MacTaggart, D. , Ming, Q., Prior, C. and Raphaldini, B. (2023) ARTop: an open-source tool for measuring active region topology at the solar photosphere. RAS Techniques and Instruments, 2(1), pp. 398-407. (doi: 10.1093/rasti/rzad029)

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The importance of measuring topological quantities, such as magnetic helicity, in solar observations has long been recognized. In particular, topological quantities play an important role in both understanding and predicting solar eruptions. In this paper, we present ARTop (Active Region Topology), an open-source and end-to-end software tool that allows researchers to calculate the fluxes of topological quantities based on solar magnetograms. In addition to this, ARTop also allows for the efficient analysis of these quantities in both 2D maps and time series. ARTop calculates the fluxes of magnetic helicity and magnetic winding, together with particular decompositions of these quantities. To perform these calculations, SHARP magnetograms are downloaded and velocity maps are created using the DAVE4VM method. Visualization tools, written in Python, are provided to aid in the selection of appropriate output variables and for the straightforward creation of maps and time series. Additionally, other analysis functions are included to facilitate and aid solar flare investigations. This software offers researchers a powerful tool for investigating the behaviour of active regions and the origins of space weather.

Item Type:Articles
Additional Information:KA and DM acknowledge support from an Innovation Placement supported by the DiRAC HPC Facility as part of the DiRAC Federation Project. Funding for the DiRAC Federation Project was provided by the URKI Digital Research Infrastructure programme. DM, CP, and BR welcome support from the US Air Force Office for Scientific Research (AFOSR): FA8655-20-1-7032. KA acknowledges support from the Aberdoc scheme. BR acknowledges the National Center for Atmospheric Research, which is a major facility sponsored by the National Science Foundation under cooperative agreement 1852977, and the financial support from NASA (NASA-LWS award 80NSSC20K0355, NASA-HSR award 80NSSC21K1676).
Glasgow Author(s) Enlighten ID:Mactaggart, Dr David
Authors: Alielden, K., MacTaggart, D., Ming, Q., Prior, C., and Raphaldini, B.
College/School:College of Science and Engineering > School of Mathematics and Statistics > Mathematics
Journal Name:RAS Techniques and Instruments
Publisher:Oxford University Press
ISSN (Online):2752-8200
Published Online:27 July 2023
Copyright Holders:Copyright © 2023 The Author(s)
First Published:First published in RAS Techniques and Instruments 2(1):398-407
Publisher Policy:Reproduced under a Creative Commons license
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
311487Predicting solar eruptions via magnetic windingDavid MacTaggartUS Air Force (USAF)FA8655-20-1-7032M&S - Mathematics