Integral field spectroscopy of Na I D1/D2 lines reveals standing ~5.5 mHz oscillations at a sunspot umbral center indicating resonance-cavity dynamics, with propagating modes and damping at the boundary.
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43 Pith papers cite this work, alongside 4,155 external citations. Polarity classification is still indexing.
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Frequent EUV microflashes at solar plume bases, each releasing ~10^24 erg, are identified as a new unipolar network event and suggested as a candidate mechanism to power the open corona and solar wind.
A multi-height extrapolation framework using chromospheric vector data recovers a pre-eruptive flux-rope configuration in an observed solar filament, outperforming photosphere-only models in simulation tests.
Comet Lovejoy deposits 10^14-10^16 W via SPMI, below the 10^17 W brightening intensity but potentially able to trigger solar flares as a magnetic perturbation.
A forward-modeling correction using real-time lens imaging reduces dust stray-light noise by 67% and restores expected coronal intensity profiles in ground-based data.
Periodic beaded stripes in meter-wave solar radio bursts are modeled via DPR instability to constrain source magnetic fields to 0.2-1.7 G and densities to (1-7)×10^8 cm^{-3}.
Multi-wavelength timing analysis of an X-class flare reveals temperature-dependent phase drifting in 5-minute QPPs, interpreted as evidence for periodic magnetic reconnection triggered by lower-atmosphere oscillations.
High-resolution Fe I and Mg I spectral observations reveal that solar flare ribbons are modulated by stable uncombed chromospheric loops and non-flaring fine structures.
New EIS effective area curves confirm factor-of-two long-wavelength degradation without fine structure and reveal inverse FIP bias with Fe/H at 0.57 of photospheric value at 10 MK, confirmed by Chandrayaan-2 SXM spectra.
NuSTAR observations of 113 faint solar X-ray transients show they are cooler and dimmer than RHESSI microflares, with quiet-Sun events having lower energies and no cases above 3x10^27 erg.
Compact C-class solar flares with U-shaped or fan-spine magnetic structures produce white-light emission at rates near 100%, while flux-emergence types do so at only 33% and no B-class compact flares showed it.
In the 2022 March 31 solar flare, hard X-ray QPPs correlate with UV pulsations in stationary ribbon regions tied to a specific loop system in a large-scale 3D reconnection structure, while slipping kernels experience weaker non-thermal energization.
FOXES is a Vision Transformer framework that predicts solar soft X-ray irradiance from EUV observations with 0.051 dex mean absolute error while providing spatial attribution of emission sources.
Non-force-free initial magnetic fields in solar flare simulations release about twice the magnetic energy and yield EUV emission closer to observations than conventional NLFF extrapolations.
Realistic 3D MHD modeling of observed active region AR 11166 reproduces key observed properties of quasi-periodic fast propagating magnetosonic waves with improved qualitative agreement over idealized setups.
Observations of coronal rain downflows reveal preceding compressions, microflare-scale impact energy, hot rebound flows carrying under 15% of kinetic energy, and footpoint heating signatures matching TNE-TI cycles.
Stereoscopic HXR and EOVSA microwave data constrain source heights in a data-driven MHD simulation of the 2024 Oct 1 X7.1 flare, confirming consistency and associating a secondary source with southward reconnection in a current sheet that exhibits a higher electron low-energy cutoff.
DEM analysis of the 6 September 2011 coronal wave finds 6-8% density and 10-18% temperature increases at the front, indicating heating mechanisms in addition to compressional adiabatic heating.
Shock waves from nonlinear steepening in the chromosphere drive spicules, transition to large-amplitude compressive MHD waves in the corona depending on field strength, produce PCDs, show period evolution from ~5 to >=10 minutes, and supply mass flux toward the solar wind.
Analysis of the September 6, 2011 coronal wave with the SOLERwave multi-sector method reveals over 40% speed variation (750-1500 km/s) between northward and northwestward segments, attributed to differences in magnetosonic speed from an MHD solution.
Composite three-channel preprocessing of SDO/AIA images yields a YOLOv5 prominence detector with mAP@50 of 0.749 and 78% recall that also generalizes to SUVI data.
CME interaction with the HCS locally replaced the current sheet and produced a >48-hour magnetic sector transition observed near Earth in October 2024.
Leading boundary of a coronal hole has higher plasma temperature, stronger unipolar field, and lower spatial irregularity than trailing boundary due to organized loops versus dispersed bipoles.
Data-constrained 3D modeling of the 2011 August 4 flare reveals strong polarity asymmetry in electron precipitation driven by magnetic mirror ratios, with turbulent scattering and Coulomb collisions modulating the energy-dependent flux.
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Solar Extreme Ultraviolet Spectrograph and High-energy Imager (SEUSHI): Design, Development, and Pre-Flight Calibration
SEUSHI is a compact dual-mode instrument that delivers 1-arcmin temperature maps every 5 seconds plus 0.2-nm EUV spectra and photon-counting SXR spectroscopy to study flare initiation and elemental abundances.