Automating the Analysis of OVRO Microwave Flares

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

The Owens Valley Radio Observatory five-element array has a nearly continuous database of solar flare data from 1992 to the present. Several hundred flares, with spectral, spatial, and polarization information, exist in this database, and provide a potential source of useful information for testing flare theories. The main difficulty in analyzing these data in bulk is the calibration of amplitudes and phases at all 45 frequencies as a function of time. We have been building an automated system for providing the total power calibration and are beginning to automate the handling of relative visibilities with a minimum of user interaction. In the current state of the system, it is possible to access a flare by time, and compute a total power spectrum without understanding the details of the process. We are now developing programs which compute the relative visibilities on all the useful baselines. One of the first products of this will be automated measures of the degree of "over resolution" at each frequency and time. Examples of the total power spectra and relative visibilities for a variety of flares will be presented.

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