DECAMETER TYPE IV BURSTS, FIBER-BURSTS AND TYPE III BURSTS ASSOCIATED WITH GROUP OF SOLAR ACTIVE REGIONS

Abstract

Features of sporadic decameter solar radio emission associated with some active regions according to observations made with radio telescope UTR-2 on August 1, 2014 are considered. Analysis of characteristics of type IV bursts, fiber-bursts and type III bursts, which were preceded and followed by type IV bursts, was carried out. Similarity of origins of fiber-bursts and type III bursts. By the frequency drift rate, they are distributed by statistically independent groups. Each group of bursts and that of type IV bursts were identified with radio emission from a particular active region. The plasma parameters in these regions and their variations while generating type IV bursts are estimated.

Keywords

• group of active regions
• decameter wavelength range
• type iv bursts
• fiber bursts
• type iii bursts
• identification
• generation regions
• plasma parameters