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Dkist

All articles tagged with #dkist

science19 days ago•2 min saved

Sun's Surface Reveals First Kelvin-Helmholtz Vortices in Record-Resolution Image

Researchers using the Daniel K. Inouye Solar Telescope in Hawaii produced the Sun’s highest-resolution image of its visible surface, revealing minute vortex-like plasma patterns at granule edges in a magnetically active area and linking them to Kelvin-Helmholtz instabilities, offering the first confirmed evidence of these processes on the Sun and potential clues to coronal heating and how magnetic energy moves across the surface.

via Physics World|

#dkist #granules #kelvin-helmholtz-instability

science20 days ago•43 min saved

High-Resolution Solar Observations Uncover Ubiquitous Magnetic Vortex Instabilities at the Sun's Surface

New DKIST observations reveal ubiquitous magnetized Kelvin–Helmholtz instabilities at the edges of magnetic flux concentrations in the solar photosphere, confirming long-standing theory. The vortices and stripe-like features seen in 416 nm filtergrams closely match 3D radiation-MHD MURaM simulations, showing KHIs generate strong shear at magnetic boundaries, drive turbulence, and enable plasma and magnetic-field mixing across multiple vertical layers. The analysis yields KHI wavelengths of roughly 50–70 km (with a 25–170 km observed range), growth rates ~0.01–0.05 s−1, and apparent phase speeds of ~0.7–3 km s−1, implying KHIs contribute to flux transport and magnetic-field braiding in the Sun’s magnetized atmosphere.

via Nature|

#dkist #kelvin-helmholtz-instability #magnetohydrodynamics

science7 months ago•4 min saved

Exclusive Data Reveals New Insights into the Sun

A groundbreaking collaboration between the ground-based DKIST telescope and the space-based Solar Orbiter has provided new insights into the Sun's activity, including the discovery of tiny structures called 'campfires' and detailed observations of the Sun's magnetic fields, advancing our understanding of solar phenomena and their impact on Earth.

via Indian Defence Review|

#campfires #dkist #science

science1 year ago•3 min saved

Inouye Solar Telescope Captures Record-Breaking Solar Flare Details

The Daniel F. Inouye Solar Telescope has captured the smallest magnetic loops ever seen in the sun's corona, revealing details that could help understand the mechanisms behind solar flares. These tiny loops, some as narrow as 13 miles, were observed during a powerful X-class flare, providing new insights into solar magnetic activity. However, funding cuts threaten the telescope's future, risking loss of valuable solar research and expertise.

via Space|

#coronal-loops #dkist #science

science2 years ago•3 min saved

Unraveling the Solar Mystery: New Insights into Sun's Layer Patterns

Scientists have captured unprecedented data from the sun's magnetic field using the Daniel K Inouye Solar Telescope (DKIST), providing the most detailed representations to date of the magnetic field of the sun's 'quiet' surface. The data has implications for understanding energy transfer between the layers of the sun and may help explain why the outermost layer (corona) is hotter than the surface (photosphere). The observations revealed a serpentine topology of the magnetic field in the lower solar atmosphere, which is fundamental for understanding energetic phenomena and driving plasma dynamics. The complex snake-like pattern of energy in the magnetic field suggests the possibility of magnetic reconnection, contributing to atmospheric heating. This research brings scientists closer to understanding the sun and its mysteries.

via Phys.org|

#astrophysics #dkist #magnetic-field