Ground-space interferometer operates RadioAstron


The interferometric signal ("petal") from the quasar 0212 +735 obtained in ground-space interferometer RadioAstron when observing November 15, 2011 at a wavelength of 18 cm along the vertical axis shows the amplitude of the signal in relative units. The result is given for the base Spektr-R — 100-meter radio telescope in Effelsberg (Germany). The projection of the interferometer base on the plane about 45 mega wavelengths.

Experts Astro Space Center of Lebedev Physical Institute received the first correlated signal from the quasar 0212 +735 with the ground-space radio interferometer RadioAstron that marks the beginning of the existence of the interferometer as the current system. In a planned operation before the end of January 2012 will be searched interferometric signals at other frequencies and longer bases. It will also be held a large amount of regular tests, including — to increase the quality of transmission of scientific data.

    Lebedev Physical Institute Astro Space Center specialists have successfully recorded the first correlated signals from space radio telescope on Earth-space bases — the so-called interferometric petals. The petals were obtained between the space and ground-based radio telescopes radio telescope located in the paragraphs: Light, Zelenchukskaya Badary (Institute of Applied Astronomy RAS), Evpatoria (National Centre for Control and Testing of Space Resources, Ukraine), Effelsberg (Institute of Radio Astronomy Society of it. Max Planck, Germany) .

    The interference response was detected at a wavelength of 18 cm on the basis of data of the first ground-space interferometer session, held November 15, 2011. At this point, the space telescope Spektr-R was at a distance of about 100,000 km from Earth.

    Correlated signal was obtained in the observations of the quasar 0212 +735, located at a distance of several billion light-years from Earth. Quasar has been specifically chosen by a group of petals project RadioAstron search for interferometric testing based on preliminary information about the brightness of the object obtained with the help of the National Radio Astronomy Observatory VLBA USA.

Successful detection of the interference signal confirms the technical and theoretical decisions on complex work interferometric system "space-to-Earth", and marks the beginning of the modern international system of ground-space — radiointerferometer RadioAstron.
    Search petals on different frequency and for longer interferometric bases will occur before the end of January 2012.
    Experts Astro Space Center of Lebedev Physical Institute in cooperation with the NPO. Lavochkin also continue to perform many other jobs in the completion of the test space station Spektr-R, including work on increasing the quality of the transmission and reception of scientific data from the Space Telescope.

    To summarize this stage, the head of Astro Space Center of Lebedev Physical Institute, RAS Academician Nikolai Semenovich Kardashev said: "On behalf of the Lebedev Physical Institute Astro Space Center would like to congratulate and thank the staff of the NGO staff them. Lavochkin, a huge number of people from other organizations in Russia, Ukraine and abroad for many years of working together, which has allowed us to achieve this result. "

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