Subject: Re: HIGH CADENCE IMAGING CAMPAIGN Date: Sun, 14 Apr 2002 10:51:34 +0200 From: karlicky To: canfield@mithra.physics.montana.edu CC: karlicky@asu.cas.cz Dear Dick, we are highly interested in collaboration with RHESSI team. At our Observatory we traditionally study the response of chromospheric layers to the bombardment by superthermal particles. We compare observations obtained in Halpha, radio and hard X-rays with the modeling. We have regular radio observations in the time interval of about 6-15 UT, the observations are not dependent on weather. We have two radiospectrographs in the range 0.8-2 GHz and 2-4.5 GHz with the time resolution of 0.1 s and radiometer working at 3 GHz with time resolution of 0.01 s. No images, no spatial resolution. The radio frequencies of radiospectrographs correspond to the plasma densities of about 2X10^9 - 2.5X10^11 cm-3. Information about the radio bursts observed by our instruments are accesible on web address: http://sunkl.asu.cas.cz/~radio/ Two example of our observations of the Feb. 20, 2002, 11:06 flare I enclosed in attachment. My telephone 420-204-620356 Astronomical Institute 420-204-649504 home. Email addess: karlicky@asu.cas.cz Best regards, Marian --------------------------------------------------------------------- [Image] [Image]