Tag Archive for 'Sunspot'

Yu et al. discovered radio bursts above a sunspot that resemble radio emissions from aurorae on Earth. The pink-purple streaks in this illustration represent the radio emissions, with higher-frequency radio signals in pink, closer to the sunspot, and lower frequencies in purple. The thin lines represent magnetic field lines above the sunspot. The sunspot is the dark region on the Sun at the bottom. Image credit: Sijie Yu, New Jersey Institute of Technology.

Solar Astronomers Detect Aurora-Like Radio Emission above Sunspot

Mar 21, 2024 by News Staff

Astronomers using the Karl G. Jansky Very Large Array have observed long-lasting aurora-like radio bursts above a sunspot. This discovery could help us...

Flaring, active regions of the Sun are highlighted in this image combining observations from several telescopes. High-energy X-rays from NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) are shown in blue; low-energy X-rays from Japan’s Hinode spacecraft are green; and extreme ultraviolet light from NASA’s Solar Dynamics Observatory (SDO) is yellow and red. All three telescopes captured their solar images around the same time on April 29, 2015. Image credit: NASA / JPL-Caltech / GSFC / JAXA.

Solar Activity Likely to Peak in 2024, Astronomers Say

Nov 29, 2023 by News Staff

Sunspots have been observed for over four centuries and the magnetic nature of sunspot cycles has been known for about a century. However, some of its...

These images of the Sun’s surface were captured by the Inouye Solar Telescope. Image credit: NSF / AURA / NSO.

Inouye Solar Telescope Captures New Images of Sun’s Surface

May 22, 2023 by News Staff

New images from the Visible-Broadband Imager (VBI) on NSF’s 4-m Inouye Solar Telescope show a variety of sunspots and quiet regions of the Sun. These...

This image of a sunspot was taken on January 28, 2020 by NSF’s Inouye Solar Telescope’s Wave Front Correction context viewer. The image reveals striking details of the sunspot’s structure as seen at the Sun’s surface. The sunspot is sculpted by a convergence of intense magnetic fields and hot gas boiling up from below. This image uses a warm palette of red and orange, but the context viewer took this sunspot image at the wavelength of 530 nm -- in the greenish-yellow part of the visible spectrum. Image credit: NSO / AURA / NSF.

Inouye Solar Telescope Captures Its First Image of Sunspot

Dec 7, 2020 by News Staff

An image of a sunspot captured by NSF’s Daniel K. Inouye Solar Telescope clearly shows the potential of the telescope and its set of state-of-the-art...

NASA’s Solar Dynamics Observatory (SDO) captured this image of the Sun with sunspots in February 2013. The picture combines images from two SDO instruments: the Helioseismic and Magnetic Imager (HMI), which takes pictures in visible light that show sunspots, and the Advanced Imaging Assembly (AIA), which took an image in the 304 angstrom wavelength showing the lower atmosphere of the Sun, which is colorized in red. Image credit: NASA / SDO / AIA / HMI / Goddard Space Flight Center.

New Model for Plasma Flow within Sun Provides Explanations for Sunspots, Other Solar Phenomena

Sep 20, 2019 by News Staff

A team of researchers from the Department of Aeronautics and Astronautics at the University of Washington proposes a new model of plasma motion that would...

Sun-like stars rotate differentially, with the equator rotating faster than the higher latitudes. The blue arrows in the figure represent rotation speed. Differential rotation is thought to be an essential ingredient for generating magnetic activity and starspots. Image credit: MPI for Solar System Research / MarkGarlick.com.

Sun-Like Stars’ Equators Spin Up To 2.5 Times Faster than Their Poles, Say Astronomers

Sep 21, 2018 by News Staff

Our Sun rotates faster at its equator than at its poles. This process is known as differential rotation and is seen in the motion of sunspots. Now, a team...

Periods of extreme cold winter weather and perilous snowfall could be linked to the solar cycle. Image credit: NASA’s Goddard Space Flight Center.

Extreme Cold Winter Weather Can Be Linked to Solar Cycle

Mar 26, 2018 by News Staff

Pioneering new research from the University of Exeter, UK, has revealed when the 11-year solar cycle is in its ‘weaker’ phase, there are warm spells...

A map of the whole disc of the Sun was also made with a single ALMA antenna, using a technique called fast-scanning, at a wavelength of 1.25 mm. Image credit: ALMA / ESO / NAOJ / NRAO.

ALMA Captures Its First Images of Sun

Jan 17, 2017 by News Staff

The Atacama Large Millimeter/submillimeter Array (ALMA) telescope has been used to study the Sun for the first time. The new ALMA images reveal otherwise...