Solar maximum mission: Ground support programs at the Harvard Radio Astronomy Station

Details Solar maximum mission: Ground support programs at the Harvard Radio Astronomy Station Solar maximum mission: Ground support programs at the Harvard Radio Astronomy Station

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983hras.rept.....m&link_type=abstract

Final Report Harvard Radio Astronomy Station, Fort Davis, TX.

Astronomy and Astrophysics

Astronomy

Ground Support Systems, Radio Astronomy, Solar Maximum Mission, Data Acquisition, Magnetohydrodynamics, Radio Bursts, Solar Corona, Spectrum Analysis

Scientific paper

Observations of the spectral characteristics of solar radio bursts were made with new dynamic spectrum analyzers of high sensitivity and high reliability, over the frequency range 25-580 MHz. The observations also covered the maximum period of the current solar cycle and the period of international cooperative programs designated as the Solar Maximum Year. Radio data on shock waves generated by solar flares were combined with optical data on coronal transients, taken with equipment on the SMM and other satellites, and then incorporated into computer models for the outward passage of fast-mode MHD shocks through the solar corona. The MHD models are non-linear, time-dependent and for the most recent models, quasi-three-dimensional. They examine the global response of the corona for different types of input pulses (thermal, magnetic, etc.) and for different magnetic topologies (for example, open and closed fields). Data on coronal shocks and high-velocity material ejected from solar flares have been interpreted in terms of a model consisting of three main velocity regimes.

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