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PREDNASAJUCI / LECTURER :

Jan Rybak

NAZOV / TITLE :

Heating events in the quiet solar corona determined
using UV imaging data of different instruments

ABSTRAKT / ABSTRACT :

The temporal sequence of brightenings in the solar quiet corona are 
attempted to be determined using, besides the EIT/SOHO telescope,
also with the extremely fast cadence imaging data obtained by two 
full-disk EUV telescopes of the TESIS instrument onboard the 
CORONAS-PHOTON spacecraft.
The channels acquiring strictly simultaneously emission of the Fe IX/X 
17.1 and Fe VIII 13.1 lines are used providing the temporal cadence of 
just 10 seconds with the spatial scaling of ~1.7 arcsec.
An 1 hour test run data, acquired on July 15, 2009, are elaborated to 
recognize whether this type of the data can be used for investigation of 
the heating events in the quiet corona.
In particular a simple method of cross-correlations of identical picture 
elements in different emissions is used deriving the temporal sequence 
of enhanced emission in two temperature regimes of the coronal plasma. 
It is questioned whether the observed coronal heating events follow the 
properties of regular solar flares and thus can be interpreted as 
nanoflares.

TESIS is a set of solar imaging instruments in development by the 
Lebedev Physical Institute of the Russian Academy of Science, launched 
aboard the Russian spacecraft CORONAS-PHOTON in January 2009.