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

Technical Report · Tue Mar 01 04:00:00 EST 1983

OSTI ID:5518418

Maxwell, A

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.

• Research Organization: Harvard Radio Astronomy Station, Fort Davis, TX (USA)
• OSTI ID: 5518418
• Report Number(s): N-8324434; NASA-CR-170267
• Country of Publication: United States
• Language: English

Related Subjects

640104* -- Astrophysics & Cosmology-- Solar Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DATA ACQUISITION
ELECTROMAGNETIC RADIATION
FLUID MECHANICS
FREQUENCY RANGE
HYDRODYNAMICS
MAGNETOHYDRODYNAMICS
MECHANICS
MHZ RANGE
MHZ RANGE 01-100
MHZ RANGE 100-1000
RADIATIONS
RADIOWAVE RADIATION
SOLAR ACTIVITY
SOLAR CORONA
SOLAR CYCLE
SOLAR FLARES
SOLAR RADIO BURSTS
SPECTROSCOPY