The Tanaka-Enome criterion and solar activity in October November 2003 as observed by the Large Pulkovo Radio Telescope

Details The Tanaka-Enome criterion and solar activity in October November 2003 as observed by the Large Pulkovo Radio Telescope The Tanaka-Enome criterion and solar activity in October November 2003 as observed by the Large Pulkovo Radio Telescope

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cosre..42..561b&link_type=abstract

Cosmic Research, Volume 42, Issue 6, pp.561-570

Physics

Scientific paper

We present the results of spectral and polarization observations of two large sunspot groups, NOAA 0484 and NOAA 0486 + 0488, which determine high solar activity in October November 2003. The observations are made with the Large Pulkovo Radio Telescope (LPRT) in the range 2.7 20 cm, the one-dimensional (E-W) resolution of observations being 1 6 arc min, respectively. The main characteristics of the corona radio emission above these active regions are measured, allowing us to follow their dynamics during the entire period of their existence on the solar disk with a period of one day. The analysis of the obtained results is presented from the point of view of the well-known Tanaka-Enome criterion [1 2] (on the basis of this criterion one can predict strong flares from characteristics of radio emission of an active region in quasi-quiet state). Using the activity in October November 2003 as an example, we demonstrate the capabilities of a new method for estimating the level of solar activity. It was developed on the basis of long-term observations of the Sun by LPRT [3].

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