... Algorithm for selection of defining sources 1. ... Take the common part of the "minimum" sets Make 1. and 2. for both global solution and time series and obtain common set 319 common sources for "global solution sigmas" case Comparison of IAA list, and 380 sources OPA list, set of defining sources ICRF1 and combined set Solution · Given catalogue RA, DE, arbitrary catalogue ra, de. dRAi RAi ra i Algorithm can be improved with additional condition Sum over all deltas less than 1 degree. ...

Multi-Wavelength investigations of the Sun and modern problems of solar activity . SAO RAS . ... Major topics of the conference: . ... Modern observational methods for solar investigations. ... SAO RAS) - chairman . ... Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS) together with the Main (Pulkovo) Astronomical Observatory are carring out the All-Russian conference on solar physics "Multi-Wavelength Investigations of the Sun and modern problems of solar activity". ...