Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd..12e..54k&link_type=abstract
Long Wavelength Astrophysics, 26th meeting of the IAU, Joint Discussion 12, 21 August 2006, Prague, Czech Republic, JD12, #54
Astronomy and Astrophysics
Astrophysics
Scientific paper
In the given presentation we summarize the more then forty years experience in the field of decametre radio astronomy in Ukraine. Largest existing UTR-2 radio telescope (frequency range is 8-32 MHz, maximum effective area is near 150,000 m^2 , size of T-shape array is about 2×1 km) works in non-stop regime. VLBI system URAN (UTR-2, URAN-1…URAN-4 antennas) gives basis from 40 to 950 km, the maximum angular resolution is about 1s with the total maximum effective area near 200,000 m^2 . During last years the essential upgrade of these systems were carried out with including the installation of the high performance back-ends, new elements of antennas and effective methods of observations. A lot of obtained astrophysical results illustrate high informative and significance of extremely low frequency ground-based radio astronomy. Existing instruments, methodical and scientific results give useful lessons for the future perspective development of the low frequency radio astronomy. Without doubts, the creation of the new generation giant instruments like LOFAR and LWA is very actual and opens the possibility for the considerably improvement of the investigation capabilities. Low frequency radio astronomy in National Academy of Sciences of Ukraine has the high priority. Recently this activity is again supported by the special foundation for the perspective development of corresponding instrumentation, which also includes the construction of the additional large active element antenna array.
Brazhenko Anatoliy I.
Falkovich Igor S.
Konovalenko Aleksander
Koshevoj V. V.
Lecacheux Alain
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