Local-area helioseismology by SOT on-board Solar-B

Details Local-area helioseismology by SOT on-board Solar-B Local-area helioseismology by SOT on-board Solar-B

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.464..327s&link_type=abstract

In: Proceedings of the SOHO 10/GONG 2000 Workshop: Helio- and asteroseismology at the dawn of the millennium, 2-6 October 2000,

Physics

8

Helioseismology

Scientific paper

Solar-B satellite, a successor to Yohkoh, will be launched in 2005. Placed in a sun-synchronous orbit, it will carry out multi-wavelength observation in optical, EUV and X-ray ranges. One of the instruments on Solar-B, Solar Optical Telescope (SOT), a Japan/US collaboration, aims at measuring the magnetic field and the Doppler velocity field in the solar photosphere. Although it is not specifically designed for helioseismic observations, the high-resolution Dopplergram produced by SOT is potentially a very powerful tool for detailed seismic investigation of subsurface magnetic and thermal structures and associated mass flows. If successful, these measurements will be an important contribution to the main goal of the Solar-B project: understanding the origin and dynamics of the basic magnetic structures and their effects on the solar corona. We discuss the prospect and challenges of local-area helioseismology by SOT.

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