Why We Need Imaging Spectroscopy

Details Why We Need Imaging Spectroscopy Why We Need Imaging Spectroscopy

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsh44a..01k&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SH44A-01

Physics

7509 Corona, 7546 Transition Region, 7549 Ultraviolet Emissions, 7554 X-Rays, Gamma Rays, And Neutrinos, 7594 Instruments And Techniques

Scientific paper

Despite excellent progress in recent years in understand fundamental solar physics problems such as coronal heating, solar wind acceleration, flares, and coronal mass ejections, there remain many crucial questions that are still unanswered. Limitations in the observations are one important reason. Both theoretical and observational considerations point to the importance of small spatial scales, impulsive energy release, strong dynamics, and extreme plasma nonuniformity. As a consequence, high spatial resolution, broad temperature coverage, high temperature fidelity, and sensitivity to velocities and densities are all critical observational parameters. Current instruments lack one or more of these properties, and this has led to considerable ambiguity and confusion. In this talk, I will discuss some of the ways that spectroscopic information is vital to further progress, giving particular emphasis to the coronal heating problem. I will argue that a high-speed imaging spectrometer must be a top priority instrument for the future.

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