40 Years of Solar Microwave Burst Flux Measurements

Details 40 Years of Solar Microwave Burst Flux Measurements 40 Years of Solar Microwave Burst Flux Measurements

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sp41a03n&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SP41A-03

Astronomy and Astrophysics

Astronomy

6954 Radio Astronomy, 7509 Corona, 7519 Flares, 7534 Radio Emissions, 7536 Solar Activity Cycle (2162)

Scientific paper

We report results from an investigation of 40 years of solar radio burst data, from 1960-1999, compiled by the National Geophysical Data Center at NOAA, Boulder, CO. This dataset consists of more than a half-million entries corresponding to several hundred thousand bursts measured at many frequencies from approximately 150 MHz to 35 GHz, and covering more than three 11-year solar activity cycles. We discuss the ways in which limitations and biases in the dataset are identified and, where possible, corrected. We present the corrected number distributions for bursts greater than 10 SFU (solar flux units, 1 SFU = 10-22 W/m2/Hz), and powerlaw fits to them, as a function of frequency, time, and phase of the solar cycle. We compare these distributions and their variation with similar measures in other wavelengths, and discuss the implications for coronal heating and other aspects of flare physics.

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