Preview of early data from the Inouye Solar Telescope obtained during its Cycle 1 observing window showcases sunspots and quiet-Sun regions The NSF's Inouye Solar Telescope has released new high-resolution images of the Sun, showcasing sunspots and quiet regions. The images, obtained during the C
A mosaic of new solar images produced by the Inouye Solar Telescope was released, previewing solar data taken during the telescope’s first year of operations during its commissioning phase. Images include sunspots and quiet-Sun features. Credit: NSF/AURA/NSO
The National Science Foundation’s Daniel K. Inouye Solar Telescope released eight new images of the Sun, previewing the exciting science underway at the world’s most powerful ground-based solar telescope. The images feature a variety of sunspots and quiet regions of the Sun obtained by the Visible-Broadband Imager , one of the telescope’s first-generation instruments.
In this image, the fibrillar nature of the solar atmosphere is exemplified. Dark, fine threads are ubiquitous in the chromosphere. The outline of bright structures are signature of the presence of magnetic fields in the photosphere below. This image was captured by the Inouye Solar Telescope during a coordinated observation campaign with NASA’s Parker Solar Probe and ESA’s Solar Orbiter.
A sunspot is identifiable by its dark, central umbra and surrounding filamentary-structured penumbra. A closer look reveals the presence of nearby umbral fragments – essentially, a sunspot that’s lost its penumbra. These fragments were previously a part of the neighboring sunspot, suggesting that this may be the “end phase” of a sunspot’s evolution. While this image shows the presence of umbral fragments, it is extraordinarily rare to capture the process of a penumbra forming or decaying.
A detailed example of a light bridge crossing a sunspot’s umbra. In this picture, the presence of convection cells surrounding the sunspot is also evident. Hot solar material rises in the bright centers of these surrounding “cells,” cools off, and then sinks below the surface in dark lanes in a process known as convection. The detailed image shows complex light bridge and convection cell structures on the Sun’s surface or photosphere.
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