Sun  ID: 3504

Halloween 2003 Solar Storms: SOHO/EIT and SOHO/LASCO

Here is a view of the solar disk in 195 Å ultraviolet light (colored green in this movie) and the Sun's extended atmosphere, or corona, (blue and white in this movie). The corona is visible to the SOHO/LASCO coronagraph instruments, which block the bright disk of the Sun so the significantly fainter corona can be seen. In this movie, the inner coronagraph (designated C2) is combined with the outer coronagraph (C3). This movie covers a two week period in October and November 2003 which exhibited some of the largest solar activity events since the advent of space-based solar observing.

As the movie plays, we can observe a number of features of the active Sun. Long streamers radiate outward from the Sun and wave gently due to their interaction with the solar wind. The bright white regions are visible due to their high density of free electrons which scatter the light from the photosphere towards the observer. Protons and other ionized atoms are there as well, but are not as visible since they do not interact with photons as strongly as electrons. Coronal Mass Ejections (CMEs) are occasionally observed launching from the Sun. Some of these launch particle events which can saturate the cameras with snow-like artifacts.

Also visible in the coronagraphs are stars and planets. Stars are seen to drift slowly to the right, carried by the relative motion of the Sun and the Earth. The planet Mercury is visible as the bright point moving left of the Sun. The horizontal 'extension' in the image is called 'blooming' and is due to a charge leakage along the readout wires in the CCD imager in the camera.

This movie is part of a series of movies with matching cadence designed to play synchronously with each other. The other movies in this series are

For more information, visit the SOHO project page.

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Visualization Credits

Tom Bridgman (GST): Lead Animator
Rani Gran (NASA/GSFC): Producer
William D. Pesnell (NASA/GSFC): Scientist
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio

Short URL to share this page:
http://svs.gsfc.nasa.gov/3504

Mission:
SOHO

Data Used:
SOHO/Extreme-UV Imaging Telescope (EIT)/195 Filter 2003-10-25T00:00:11Z to 2003-11-07T23:48:35Z
SOHO/Large Angle Spectrometric COronagraph (LASCO)/C3 2003-10-25T00:00:11Z to 2003-11-07T23:48:35Z
SOHO/Large Angle Spectrometric COronagraph (LASCO)/C2 2003-10-25T00:00:11Z to 2003-11-07T23:48:35Z
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 these series:
SDO Pre-launch
Halloween Solar Storms 2003: A Multi-Mission View
The Sun

Keywords:
SVS >> HDTV
SVS >> SOHO
SVS >> Solar Rotation
SVS >> Solar Wind
SVS >> Sun
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Solar Active Regions
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Solar Events
SVS >> Hyperwall
SVS >> Coronagraph
SVS >> For Educators
SVS >> Corona
NASA Science >> Sun
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Coronal Mass Ejections

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 8.0.0.0.0