Microwave Chains

The majority of the modified Nobeyama radio heliograms corresponds to the restricted range of the brightness temperature of Tb~5000-20000 K.

On the negative Nobeyama radio heliograms, the white (i.e. absorption) features are radio filaments.

• October 30-31, 1992
• May 10-15, 1993
• November 1-4, 1993
• August 20-September 02, 1998

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Last update: 2 April 1999