Sun  ID: 4133

February 2013: The Busy Sun

Even near solar maximum, with sunspots dotting the photosphere, the Sun can look tranquil and serene in visible light. In the case of these images from the HMI instrument on the Solar Dynamics Observatory, the only obvious changes are the constant shimmering of the solar disk due to the bubbling of solar granulation.

But in ultraviolet light, in particular the 30.4 nanometer line of the helium ion, we see much more activity. Dark, wispy lines of cooler solar filaments (the term used for solar prominences when seen against the disk) stretch across the disk. The same structures, seen against the fainter glow of the solar corona, resemble slowly evolving flames on the limb of the Sun. Solar active regions surrounding the sunspots, appear bright in ultraviolet light.

Visualization Credits

Tom Bridgman (GST): Lead Animator
Scott Wiessinger (USRA): Producer
William D. Pesnell (NASA/GSFC): Scientist
Laurence Schuler (ADNET): Project Support
Ian Jones (ADNET): Project Support
Please give credit for this item to:
NASA's Scientific Visualization Studio, the SDO Science Team, and the Virtual Solar Observatory.

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Data Used:
SDO/HMI/Continuum also referred to as: SDO Continuum
2013-02-19T06:00 - 2013-02-22T12:00
SDO/AIA/304 Filter also referred to as: AIA 304
JOINT SCIENCE OPERATIONS CENTER - 2013-02-19T06:00 - 2013-02-22T12:00
Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.

This item is part of this series:
Solar Dynamics Observatory: Year 4

GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Solar Active Regions
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Solar Flares
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Solar Ultraviolet
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Sunspots
SVS >> Solar Dynamics Observatory
SVS >> Heliophysics
SVS >> Corona
NASA Science >> Sun
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Solar Prominences/solar Filaments
SVS >> Visible Light Imaging
SVS >> Extreme Ultraviolet Imaging
SVS >> EUV Imaging

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version