75 citations · 92 across the 11 of their papers we have counts for
12 papers
Assessing the impact of background subtraction on a dust-free corona
Erika Palmerio, Cooper Downs, Phillip Hess +4
Context. White-light observations of the solar corona contain contributions from both the electron-scattered K-corona and the dust-scattered F-corona. Because the diffuse F-corona…
Portability of Fortran's 'do concurrent' on GPUs II
Ronald M. Caplan, Miko M. Stulajter, Jon A. Linker +6
There continues to be growing interest in using standard language constructs for parallel and accelerated HPC computing, avoiding the need for (sometimes vendor-specific) external…
Advancing Heliophysics and Space Weather Modeling through Open Science
C. Corti, M. M. Kuznetsova, M. A. Reiss +85
We present a community-wide effort to develop a strategy and action plan to advance heliophysics and space weather modeling through open science. While open science has the potenti…
Open-source Flux Transport (OFT). I. HipFT -- High-performance Flux Transport
Ronald M. Caplan, Miko M. Stulajter, Jon A. Linker +6
Global solar photospheric magnetic maps play a critical role in solar and heliospheric physics research. Routine magnetograph measurements of the field occur only along the Sun-Ear…
Energetic Particles from Quasi-Separatrix Layers and Current Sheets at the Sun
Nathan A. Schwadron, Ronald M. Caplan, Jon A. Linker +2
Quasi-separatrix layers (QSLs) at the Sun are created from regions where channels of open magnetic flux have footpoints near regions of large-scale closed magnetic flux. These regi…
Magnetogram-matching Biot-Savart Law and Decomposition of Vector Magnetograms
V. S. Titov, C. Downs, T. Török +3
We generalize a magnetogram-matching Biot-Savart law (BSL) from planar to spherical geometry. For a given coronal current density , this law determines the magnetic field $…
Portability of Fortran's `do concurrent' on GPUs
Ronald M. Caplan, Miko M. Stulajter, Jon A. Linker +6
There is a continuing interest in using standard language constructs for accelerated computing in order to avoid (sometimes vendor-specific) external APIs. For Fortran codes, the {…
Advancing parabolic operators in thermodynamic MHD models II: Evaluating a Practical Time Step Limit for Unconditionally Stable Methods
Ronald M. Caplan, Craig D. Johnston, Lars K. S. Daldoff +1
Unconditionally stable time stepping schemes are useful and often practically necessary for advancing parabolic operators in multi-scale systems. However, serious accuracy problems…
On the Origin of the sudden Heliospheric Open Magnetic Flux Enhancement during the 2014 Pole Reversal
Stephan G. Heinemann, Mathew J. Owens, Manuela Temmer +12
Coronal holes are recognized as the primary sources of heliospheric open magnetic flux (OMF). However, a noticeable gap exists between in-situ measured OMF and that derived from re…
Coronal Models and Detection of Open Magnetic Field
Eleanna Asvestari, Manuela Temmer, Ronald M. Caplan +11
A plethora of coronal models, from empirical to more complex magnetohydrodynamic (MHD) ones, are being used for reconstructing the coronal magnetic field topology and estimating th…
A Magnetogram-matching Method for Energizing Magnetic Flux Ropes Toward Eruption
Viacheslav S. Titov, Cooper Downs, Tibor Török +1
We propose a new ``helicity-pumping'' method for energizing coronal equilibria that contain a magnetic flux rope (MFR) toward an eruption. We achieve this in a sequence of magnetoh…
Synchronic coronal hole mapping using multi-instrument EUV images: Data preparation and detection method
R. M. Caplan, C. Downs, J. L. Linker
We describe a method for the automatic mapping of coronal holes (CH) using simultaneous multi-instrument EUV imaging data. Synchronized EUV images from STEREO/EUVI A&B 195A and SDO…