Ground-Based Solar Research An Assessment and Strategy for the Future (1998) / Chapter Skim
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1 Ground-based Solar Research: A Scientific Synopsis
1 Ground-based Solar Research: A Scientific Synopsis
Pages 8-14
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From page 8... ...
The associated coronal mass ejections produce interplanetary blast waves that impact Earth's magnetic field, occasionally so violently that they disrupt electncal power gnds on Earth. All of these processes wax and wane over varying time scales, including the ~ I-year solar activity cycle and longer periods of many decades to centuries.
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From page 9... ...
represent the positions of the individual unresolved magnetic fibrils in the dark downdrafts between granule convective cells with diameters of about 103 krn. SOURCE: Courtesy of Alan Title of the Lockheed Martin Advanced Technology Center.
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From page 10... ...
This is a startling revelation, evidently responsible for otherwise inexplicable aspects of solar activity, but still inexplicable in itself. it is the basic dynamical role of the interacting fibrils that drives the need for high spatial resolution in observations of the Sun.
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From page 11... ...
How is nonradiative energy channeled into the outer atmosphere where it is heated to millions of degrees, thereby producing the solar X-ray emission from the magnetic active regions? · How is the solar wind heated, structured, and driven?
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From page 12... ...
What is known about the existence and nature of starspots, stellar dynamos, X-ray coronal loops, coronal holes, fast tenuous stellar winds, magnetic flares, magnetic flux bundles, coronal mass ejections, internal differential rotation, and brightness changes, for example, has been inferred from subtle details in the integrated light and from detailed observations of the Sun and their theoretical interpretation. With increasing knowledge comes the desire for proper study and understanding of the solar atmosphere.
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From page 13... ...
Ground-based optical, infrared, and radio observatories study the photosphere, chromosphere, and corona of the Sun with a spatial resolution and time span that cannot be duplicated from space platforms. Moreover, the use of adaptive optics combined with novel data capture and data-processing techniques can enable future ground-based telescopes to have much higher spatial resolution than is currently feasible in space-based instruments.
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From page 14... ...
To enable fuller understanding the Sun on all spatial and temporal scales, as well as to complement and enhance space-based solar research, the task group believes that the primary tasks of ground-based telescopic research should be the following: Obtaining a long-term synoptic record of solar activity: This effort should be supplemented by continued monitoring of the activity and luminosity of other solar-type stars to provide a statistical sample of the states through which the Sun may pass in the next 1000 years. The task group notes that the National Solar Observatory, the High Altitude Observatory, the independent observatories-including, for example, Mt.
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