When
3:30 p.m., March 10, 2009
Where
Kuiper Space Sciences Building 308
Frank Hill from the National Solar Observatory is the scheduled speaker.
The GONG network, which comprises six geographically distributed instruments, was deployed in 1995. It was originally intended for helioseismology studies, which require very long (years in some cases) uninterrupted observations of the Doppler shift of the solar surface. These observations are then analyzed to infer the physical state of the solar interior. However, it was realized that other aspects of solar physics would benefit greatly from nearly-continuous high cadence (once per minute) observations, such as magnetic field evolution, flares, and filament eruptions. Thus, GONG now also obtains full-disk line-of-sight magnetograms every minute, and an H-alpha imaging system is under development and will be deployed in Spring 2010. In this talk, I will briefly describe GONG, and review some of the science topics that GONG can now address, including sub-surface flows, rapid flare-associated magnetic field changes, assimilation of magnetic field observations into space weather forecasts, far-side imaging, and filament dynamics.
Refreshments will be served at 3:15p.m. in the north corner of the atrium
The GONG network, which comprises six geographically distributed instruments, was deployed in 1995. It was originally intended for helioseismology studies, which require very long (years in some cases) uninterrupted observations of the Doppler shift of the solar surface. These observations are then analyzed to infer the physical state of the solar interior. However, it was realized that other aspects of solar physics would benefit greatly from nearly-continuous high cadence (once per minute) observations, such as magnetic field evolution, flares, and filament eruptions. Thus, GONG now also obtains full-disk line-of-sight magnetograms every minute, and an H-alpha imaging system is under development and will be deployed in Spring 2010. In this talk, I will briefly describe GONG, and review some of the science topics that GONG can now address, including sub-surface flows, rapid flare-associated magnetic field changes, assimilation of magnetic field observations into space weather forecasts, far-side imaging, and filament dynamics.
Refreshments will be served at 3:15p.m. in the north corner of the atrium
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