Download Diapositiva 1

Moscow
2006
Astro Space Center
P.N. Lebedev Physical
Institute
DCR-1000 - cross 1000х1000 m,
width 40 m, range 30-120 MHz.
BSA – array of 16384
dipoles,187х384 m, 16 separate
beams, range 110±1 MHz.
RT-64, Kalyazin
RT-22, Pushchino
RADIO INTERFEROMETER MUCH LARGER
THE EARTH
“SPECTR-R” (Mission “RadioAstron”)
Main scientific tasks of the mission –
syntheses of high-precision images of various Universe
objects, its coordinates measurements and search their
variability with the time. A fringe width of the system is
up to 7 micro arc seconds.
Main characteristics of the space radio telescope
Spectral band:
•
wavelength (cm) 92;
18;
6.2;
1.19-1.63
•
frequency (GHz) - 0.327; 1.66; 4.83;
18-26
Main organizations:
on scientific complex - Astro Space Center of Lebedev Physical
Institute of Russian Academy of Science;
of spacecraft - Lavochkin Research Production Association of Russian
Space Agency.
Planned launch date of the mission is 2007.
The orbit of the mission :
apogee 310 000 - 370 000 km
perigee 10 000 - 70 000 km
declination 51.6 °
period variation 7 - 10 days
Guarantied time of activity 5 years
Scientific payload mass 2100 kg
Pointing accuracy of radio telescope - 35"
OBJECTS OF EXPLORATION BY RADIOASTRON MISSION
1.
GALAKTIC NUKLEI (SYNCHROTRON EMISSION, COSMIC RAYS,
MEGAMASERS, BLACK HOLES, WORMHOLES, NEW PHYSICS).
2.
COSMOLOGY, DARK MATTER AND DARK ENERGY, TIME-SPACE
METRIC BY OBSERVATIONS OBJECTS AND GRAVITATION LENSES
AT DIFFERENT REDSHIFTS.
3.
STAR AND PLANETARY SYSTEM FORMATION REGIONS (MASERS).
4.
STELLAR MASS BLACK HOLES AND NEUTRON (QUARC?) STARS.
5.
INTERSTELLAR AND INTERPLANETARY PLASMA.
6.
HIGH ACCURACY COORDINATE SYSTEM AND FUNDAMENTAL
ASTROMETRY.
7.
HIGH ACCURACY BALLISTIC AND PRECISION EARTH GRAVITY
FIELD.

The main expectable goals of Radioastron mission
Super massive black holes in galactic nuclei: behavior of the matter near the events
horizon, the structure and value of magnetic field near internal accretion disc and
near black hole poles, mechanism of the relativistic particle acceleration (protons
or/and electron/positron pairs, direct detection of cosmic ray acceleration sources,
Blanford-Znajek or/and electric field in vacuum acceleration), evolution of this
parameters in cosmological time scale and the role of normal and dark matter),
 super luminal motion and expansion of radio sources at different redshifts, dark
matter distribution from the lensing superluminal sources,
 cosmological proper motions of extragalactic radio sources,
 black holes and neutron stars in our galaxy (a study of the energy production
mechanism, determination of distance and proper motion, Galaxies gravity
potential from pulsar proper motion observations, measurements of relativistic
binary system orbits),
 interstellar plasma in Galaxy (scintillation of fringe visibility and refraction
phenomena by pulsar observations),
 young stars and planets (a study of the structure and dynamics of the star-birth
regions in galaxies by their megamaser emission, a study of young stars and
protostars with protoplanetary rings in our galaxy by their maser emission),
 3D Earth gravity field and fundamental astrometry with high accuracy.
More than 6000 objects in total are accessible to Radioxplorations with
highest angular resolution.
Megamaser in the galaxy
NGC4258 (6.4 million pc)
РТ-70 миллиметрового
диапазона на плато Суффа.
MILLIMETRON.
12 m cryogenic mirror.
λ = 0,01-20 mm.
Bolometric sensitivity
5*10-9 Jy (σ)
(λ=0.3 mm, 1 hour int.).
Space-ALMA VLBI
sensitivity 10-4 Jy (σ)
(λ=0.5 mm, 300 s int.),
fringe size up to
nanoarcseconds.
Ground-space Interferometer
Millimetron
ALMA
Suffa
(Uzbekistan)