|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
suggested
some likely generation mechanisms for subsecond impulses of
|
|
|
microwave
emission during flares and investigated the spatial structures of coronal
|
|
|
holes
associated with their atmospheric heating characteristics [4]. The research
|
|
|
efforts
are carried out in collaboration with observatories of Japan, China, Europe
|
|
|
and
the USA using data obtained at ground-based and orbital observatories in
all
|
|
|
ranges of solar
emission.
|
|
|
However, two factors: the
obsolescence of the SSRT systems and the need to
|
|
|
switch
over to advanced diagnostics of events in the Sun’s atmosphere which call
|
|
|
for
substantial improvement of the speed for obtaining radio images, a
simultaneous
|
|
|
recording
of the processes occurring under different physical conditions, or a three-
|
|
|
dimensional
picture of their development - led us in 1997 to the decision to create -
|
|
|
on
the basis of modernizing the SSRT - a new-generation instrument, the
multiwave
|
|
radioheliograph
(MVRH) [5-7]. That decision is in full accord with the tendency
|
|
|
established
in the 1990s in radioheliography (introduction of a second frequency at
|
|
|
NRH,
development of OVRO, the proposal on the development and construction in
|
|
|
the
USA of FASR at ~0.3-30 GHz and
LOFAR at 15-150 MHz , the decimetric
|
|
|
array
in Brazil at 1.2-1.7, 2.7 and 5.0 GHz,
and Chinese Space Solar telescope
|
|
|
(SST),
the radioheliograph at 1-30 MHz
with high speed and resolution). The
|
|
|
implementation
of these projects involves overcoming very challenging technical
|
|
|
problems
and requires considerable funds. With their creations, scientists will have
|
|
|
instruments
at their disposal, which would meet - for many years ahead - all
|
|
|
conceivable
needs of solar physics and solar-terrestrial connections. They will
|
|
|
revolutionize
the space weather prediction problem.
|
|