92 citations · 267 across the 21 of their papers we have counts for
24 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…
Understanding how Coronal Heating and Magnetic Field Scaling Affect Global Properties of the Low and Middle Corona
Caroline L. Evans, Cooper Downs, Donald Schmit
The magnetic field of the Sun is a key driver of coronal heating and solar wind acceleration. In tandem, these influence the observable morphology of the corona, along with definin…
Measured energy exchange in coronal hole solar wind from its solar origins to the heliosphere
Yeimy J. Rivera, Alin R. Paraschiv, Samuel T. Badman +33
Coordinated ground- and space-based remote observations are used to provide a comprehensive, multi-perspective view of the solar atmosphere that we connect with in situ measurement…
On the 3D Magnetic Structure of Coronal Mass Ejections Through the Solar Corona
Erika Palmerio, Michal Ben-Nun, Tibor Török +2
The magnetic fields that make up the internal structure of coronal mass ejections (CMEs) are thought to be organised in a flux rope configuration, consisting of twisted magnetic fi…
Modeling the Thermal Low-Frequency Radio Sun with Ray Tracing
Peijin Zhang, Bin Chen, Gregory Fleishman +4
Incoherent radio emission at meter--decimeter wavelengths provides a key diagnostic of the coronal thermal plasma, but at frequencies below \,1\,GHz coronal refraction can su…
Tracking Magnetic Topological Change in a Time-Dependent Coronal Model
Emily I. Mason, Cooper Downs, Roberto Lionello +2
We apply the slip-back mapping method of Titov et al. 2009 and Lionello et al. 2020 to a thermodynamic MHD simulation to track topological changes in the magnetic field at a range…
Understanding the complex morphology of a CME II: how pre-eruptive conditions shape CME evolution
Abril Sahade, Cecilia Mac Cormack, Angelos Vourlidas +4
The morphology and heliospheric impact of coronal mass ejections (CMEs) are strongly shaped by their preeruptive magnetic configuration and surrounding coronal environment, yet the…
Magnetic Connectivity in the Time-Dependent Corona and Heliosphere
Roberto Lionello, Cooper Downs, Emily I. Mason +3
Magnetic flux fills the heliosphere, expands outward from the solar corona, and is fundamentally related to the structure and dynamics of the solar corona and solar wind. Open magn…
Quantifying how Surface Complexity Influences Properties of the Solar Corona and Solar Wind
Caroline L. Evans, Cooper Downs, Donald Schmit
The Sun's magnetic field is a key driver in coronal heating and consequently solar wind acceleration. Remote measurement of the photosphere provides the magnetic surface boundary c…
The Quasi-Radial Field-line Tracing (QRaFT): an Adaptive Segmentation of the Open-Flux Solar Corona
Vadim M. Uritsky, Christopher E. Rura, Cooper Downs +3
Optical observations of solar corona provide key information on its magnetic geometry. The large-scale open field of the corona plays an important role in shaping the ambient solar…
Coronal dimmings and what they tell us about solar and stellar coronal mass ejections
Astrid M. Veronig, Karin Dissauer, Bernhard Kliem +10
Coronal dimmings associated with coronal mass ejections (CME) from the Sun have gained much attention since the late 1990s when they were first observed in high-cadence imagery of…
Evidence of Extreme Ultraviolet Resonant Excitation in the Middle Corona During A Solar Flare
Daniel B. Seaton, Cooper Downs, Giulio Del Zanna +10
We present observations of an eruptive solar flare on 2016 January 6 that occurred behind the solar limb from the perspective of the Earth, but was well observed by STEREO and the…
Quantitative Image-Based Validation Framework for Assessing Global Coronal Magnetic Field Models
Christopher E. Rura, Vadim M. Uritsky, Shaela I. Jones +3
Coronagraph observations provide key information about the orientation of the Sun's magnetic field. Previous studies used various algorithms to segment quasi-radial features in cor…
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…
Observing the evolution of the Sun's global coronal magnetic field over eight months
Zihao Yang, Hui Tian, Steven Tomczyk +4
The magnetic field in the Sun's corona stores energy that can be released to heat the coronal plasma and drive solar eruptions. Measurements of the global coronal magnetic field ha…
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 $…
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…
SuNeRF: 3D reconstruction of the solar EUV corona using Neural Radiance Fields
Robert Jarolim, Benoit Tremblay, Andrés Muñoz-Jaramillo +8
To understand its evolution and the effects of its eruptive events, the Sun is permanently monitored by multiple satellite missions. The optically-thin emission of the solar plasma…
Solar Eruptions Triggered by Flux Emergence Below or Near a Coronal Flux Rope
T. Török, M. G. Linton, J. E. Leake +4
Observations have shown a clear association of filament/prominence eruptions with the emergence of magnetic flux in or near filament channels. Magnetohydrodynamic (MHD) simulations…
On the short term stability and tilting motion of a well-observed low-latitude solar coronal hole
Stephan G. Heinemann, Stefan J. Hofmeister, James A. Turtle +5
The understanding of the solar magnetic coronal structure is tightly linked to the shape of open field regions, specifically coronal holes. A dynamically evolving coronal hole coin…
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…
Understanding the Physical Nature of Coronal "EIT Waves"
David M. Long, D. Shaun Bloomfield, Peng-Fei Chen +9
For almost 20 years the physical nature of globally propagating waves in the solar corona (commonly called "EIT waves") has been controversial and subject to debate. Additional the…
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…
The effect of limited spatial resolution of stellar surface magnetic field maps on MHD wind and coronal X-ray emission models
C. Garraffo, O. Cohen, J. J. Drake +1
We study the influence of the spatial resolution on scales of and smaller of solar surface magnetic field maps on global magnetohydrodynamic solar wind models, and on a model…