Explanipedia

Observing the evolution of the Sun’s global coronal magnetic field over 8 months Open

Zihao Yang, Hui Tian, S. Tomczyk, X. Liu, S. E. Gibson , et al. · 2024

The magnetic field in the Sun’s corona stores energy that can be released to heat plasma and drive solar eruptions. Measurements of the global coronal magnetic field have been limited to several snapshots. In this work, we present observat…

Coronal Polarimetry: Determining the Magnetic Origins of Coronal Mass Ejections Open

S. E. Gibson, Urszula Ba̧k-Stȩślicka, R. Casini, Joel Dahlin, E. E. DeLuca , et al. · 2023

Whitepaper #127 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research. Additional topics: ground-based missions/projects; solar physics; space-based missions/projects; user-need-driven basi…

COSMO ChroMag: The Chromosphere and Prominence Magnetometer Open

A. G. de Wijn, S. Tomczyk, J. Burkepile, R. Casini, G. de Toma · 2023

Whitepaper #088 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: space weather applications; basic research. Additional topics: space weather research/operations/research loop; space weather research…

COSMO: The COronal Solar Magnetism Observatory Open

S. Tomczyk, J. Burkepile, R. Casini, Marcel F. Corchado-Albelo, E. E. DeLuca , et al. · 2023

Whitepaper #392 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: space weather applications; infrastructure/workforce/other programmatic. Additional topics: space weather research/applications/operat…

Coronal spectral diagnostics: The Coronal Solar Magnetic Observatory (COSMO) Open

E. Landi, S. E. Gibson, S. Tomczyk, G. de Toma, Jie Zhang , et al. · 2023

Whitepaper #229 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: space weather applications; basic research. Additional topics: ground-based missions/projects; solar physics; other space weather.

Revealing the Sun’s Alfvénic waves Open

R. J. Morton, Patrick Antolin, Rahul Sharma, Alin Rǎzvan Paraschiv, E. Tajfirouze , et al. · 2023

Alfvénic waves are thought to be a key mechanism for energy transfer in the Sun's atmosphere, providing the energy to meet the radiative losses of the dense chromosphere and hotter, tenuous corona, along with the demands required to accele…

Coronal spectral diagnostics: The coronal solar magnetism observatory (COSMO) Open

E. Landi, S. E. Gibson, S. Tomczyk, J. Burkepile, G. de Toma , et al. · 2022

The Need: Understanding and predicting the major phenomena taking place in the solar corona, such as flares and Coronal Mass Ejections (CMEs), the heating and evolution of the solar atmosphere, and the acceleration of the solar wind, are f…

Mapping the global magnetic field in the solar corona through magnetoseismology Open

Zihao Yang, Christian Bethge, Hui Tian, S. Tomczyk, R. J. Morton , et al. · 2021

<p>Magnetoseismology, a technique of magnetic field diagnostics based on observations of magnetohydrodynamic (MHD) waves, has been widely used to estimate the field strengths of oscillating structures in the solar corona. However, pr…

Untangling the global coronal magnetic field with multiwavelength observations Open

S. E. Gibson, Anna Malanushenko, G. de Toma, S. Tomczyk, K. Reeves , et al. · 2020

Magnetism defines the complex and dynamic solar corona. Coronal mass ejections (CMEs) are thought to be caused by stresses, twists, and tangles in coronal magnetic fields that build up energy and ultimately erupt, hurling plasma into inter…

Mapping the magnetic field in the solar corona through magnetoseismology Open

Zihao Yang, Hui Tian, S. Tomczyk, R. J. Morton, Xianyong Bai , et al. · 2020

Global maps of the magnetic field in the solar corona Open

Zihao Yang, Christian Bethge, Hui Tian, S. Tomczyk, R. J. Morton , et al. · 2020

The magnetic field in the Sun's corona The solar corona is the outermost layer of the Sun's atmosphere, consisting of hot, diffuse, and highly ionized plasma. The magnetic field in this region is expected to drive many of its physical prop…

High-cadence Visible and Infrared Spectra of the Sun during Eclipse Open

P. G. Judge, S. Tomczyk, James W. Hannigan, Scott Sewell · 2019

We study novel spectra from 310 nm to 5.5 μ m obtained during the 2017 August 21 eclipse. Four spectrometers were deployed at Camp Wyoba (altitude 2402 m) on Casper Mountain, WY. Three low-resolution ( ≲ 1000) Avantes spectrometers obtaine…

Experimental Testing of Scattering Polarization Models Open

Wenxian Li, R. Casini, S. Tomczyk, E. Landi Degl’Innocenti, Brandan Marsell · 2018

We realized a laboratory experiment to study the scattering polarization of the Na I D-doublet at 589.0 and 589.6 nm in the presence of a magnetic field. This work was stimulated by solar observations of that doublet, which have proven par…

The Eruption of a Prominence-carrying Coronal Flux Rope: Forward Synthesis of the Magnetic Field Strength Measurement by the COronal Solar Magnetism Observatory Large Coronagraph Open

Yuhong Fan, S. E. Gibson, S. Tomczyk · 2018

From a magnetohydrodynamic (MHD) simulation of the eruption of a prominence hosting coronal flux rope, we carry out forward synthesis of the circular polarization signal (Stokes V signal) of the Fe xiii emission line at 1074.7 nm produced …

The eruption of a prominence carrying coronal flux rope: forward synthesis of the magnetic field strength measurement by the COronal Solar Magnetism Observatory Large Coronagraph Open

Yuhong Fan, S. E. Gibson, S. Tomczyk · 2018

From a magnetohydrodynamic (MHD) simulation of the eruption of a prominence hosting coronal flux rope, we carry out forward synthesis of the circular polarization signal (Stokes V signal) of the FeXIII emission line at 1074.7 nm produced b…

Magnetic Nulls and Super-radial Expansion in the Solar Corona Open

S. E. Gibson, K. Dalmasse, Laurel Rachmeler, M. L. De Rosa, S. Tomczyk , et al. · 2017

Magnetic fields in the Sun’s outer atmosphere—the corona—control both solar-wind acceleration and the dynamics of solar eruptions. We present the first clear observational evidence of coronal magnetic nulls in off-limb linearly polarized o…

Exploring Coronal Dynamics: A Next Generation Solar Physics Mission white paper Open

R. J. Morton, E. Scullion, D. Shaun Bloomfield, J. A. McLaughlin, Stéphane Régnier , et al. · 2016

Determining the mechanisms responsible for the heating of the coronal plasma and maintaining and accelerating the solar wind are long standing goals in solar physics. There is a clear need to constrain the energy, mass and momentum flux th…

A global view of velocity fluctuations in the corona below 1.3r⊙ with comp Open

R. J. Morton, S. Tomczyk, Rui Pinto · 2016

The Coronal Multi-channel Polarimeter (CoMP) has previously demonstrated the presence of Doppler velocity fluctuations in the solar corona. The observed fluctuations are thought to be transverse waves, i.e., highly incompressible motions w…

Coronal plasma diagnostics from ground‐based observations Open

E. Landi, S. R. Habbal, S. Tomczyk · 2016

In this paper we discuss the potential of ground‐based visible observations of the solar corona to address the key open problems in the physics of the solar atmosphere and of solar activity. We first compare the diagnostic potential of vis…

Scientific objectives and capabilities of the Coronal Solar Magnetism Observatory Open

S. Tomczyk, E. Landi, J. Burkepile, R. Casini, E. E. DeLuca , et al. · 2016

Magnetic influences increase in importance in the solar atmosphere from the photosphere out into the corona, yet our ability to routinely measure magnetic fields in the outer solar atmosphere is lacking. We describe the scientific objectiv…

Development of a tunable filter for coronal polarimetry Open

S. Tomczyk, Shibu K. Mathew, D. L. Gallagher · 2016

Measuring magnetic fields in the solar corona is crucial to understanding and predicting the Sun's generation of space weather that affects communications, GPS systems, space flight, and power transmission. The Coronal Solar Magnetism Obse…

Waves and Magnetism in the Solar Atmosphere (WAMIS) Open

Yuan‐Kuen Ko, J. Dan Moses, John M. Laming, L. Strachan, Samuel Tun Beltran , et al. · 2016

Comprehensive measurements of magnetic fields in the solar corona have a long history as an important scientific goal. Besides being crucial to understanding coronal structures and the Sun's generation of space weather, direct measurements…

Investigating Alfvénic wave propagation in coronal open-field regions Open

R. J. Morton, S. Tomczyk, Rui Pinto · 2015

The physical mechanisms behind accelerating solar and stellar winds are a long-standing astrophysical mystery, although recent breakthroughs have come from models invoking the turbulent dissipation of Alfvén waves. The existence of Alfvén …

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