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Radio Interferometer Complex

#1329


Creation of Radio Interferometer Complex on Basis of the Radio Telescope in «Kalyazin» (RT-64, Russia) for Astrophysical Investigation with Very High Angle Resolution

Tech Area / Field

  • PHY-RAW/Radiofrequency Waves/Physics

Status
3 Approved without Funding

Registration date
25.08.1998

Leading Institute
OKB MEI, Russia, Moscow

Supporting institutes

  • Scientific Research Radiophysical Institute, Russia, N. Novgorod reg., N. Novgorod\nFIAN Lebedev / Astro Space Center, Russia, Moscow\nOAO "Podolsk Electro-Mechanical Factory", Russia, Moscow reg., Podolsk

Collaborators

  • California Institute of Technology / Jet Propulsion Laboratory, USA, CA, Pasadena

Project summary

The objective of the Project is to develop, to put in operation and to provide functioning of the very long baseline radio interferometer (baselines greater than 1000 km) based on the usage of 64-m radio telescope in Kalyazin (Russia).

The usage of this radio interferometer complex will permit to utilize the expenditures that were done during the construction of big radio telescopes in Kalyazin. It is only necessary to provide receiving system for new frequency ranges (up to 6 frequencies in prospect) sand to adjust antenna efficiencies at high frequencies.

Correlation of the data recorded with radio interferometer Kalyazin-Ventspils is planned to be done at the Data Processing Center of NIRFI in N.Novgorod (Russia). NIRFI experience in data processing would permit to provide efficient and not expensive correlation of scientific data obtained with the interferometer. For Data Processing Center commissioning it is necessary to supply some computational equipment, to conduct system assembling and tests.

Certain improvements in communication facilities (phone, E-mail) also will be necessary to provide coordination and operations of the interferometer.

Total cost of all this reconstruction is on the level of a few percent compared to the total cost that were spent for construction of radio telescopes. Radio interferometer complex will be used as independent instrument and it can be integrated into international VLBI network as well because all equipment will be performed in international standards. In particular, the interferometer might serve like technical foundation for preparation of ground-space radio interferometer «RadioAstron» (project of ASC FIAN).

Development of present-day scientific programs is not an objective of given project, but technical specifications for the interferometer are those which will permit to solve such scientific programs.

Full construction of universal astrophysical radio interferometer complex would request to provide expensive equipment: broad band data recorders, frequency standards, and correlators. In a frame of this project we suppose to utilize existing equipment, which will permit the functioning of the interferometer complex, while delivery modern equipment in a future will not demand total reconstruction of the system.

During the project development and operation many scientists and engineers previously engaged in military business will get peaceful job without changing their profession (about 60% of the Project staff).

Reference:

1. L.I.Matveenko, J.N.Gorhenkov, B.A.Poperechenko and others. «Bear Lakes» - radio interferometer point». Let. Astron. J., 1995., v.21, №7, pp.535-540.

2. I.E.Molotov, J.N.Gorhenkov, B.A.Poperechenko. «VLBI activity of ASC on Russian». Deep Space Tracking. Network Proceeding APT and APSG, 1996, 281-288, Kashima.

3. I.E.Molotov, V.A.Alexeev, J.N.Gorhenkov, B.A.Poperechenko. «Progress Rerport on resalts of Bear Lakes - Tidbinbilla Experiment». Deep Space Tracking. Network Proceeding APT and APSG, 1996, 289-293, Kashima.

4. N.S.Kardashov and others. «Orbiting very long base interferometer (OVLBI) for radio and optical astroomy». Acta Astronautica 37, 271-275, 1995.

5. V.I. Slysh and others. «VLBI observations of OH maser with the S-2 recording system». MNRAS, 283, L9-L13, 1996.

6. L.R.Kogan and others. «VLA images of 7 mm methanol masers in star forming regions.» IAU Symposium N178, Leiden, 1997.

7. S.V.Kalensky and others. «Detection of a new methanol maser line with the Kitt Peak 12-m telescope by remote observing from Moscow», ApJ, 478, L37-L40, 1997.

8. A.M.Aslanjan and others. «RT-70 element of radio interferometer network», Radio physics J, v.XXX, № 3, pp. 327-333, 1987.

Potential role of foreign collaborators:

Foreign participants (NRAO, EVN, and Sweden Academy of Science) have intentions to take part in the project in commissioning of the interferometer and in cooperative scientific usage of the interferometer complex «Kalyazin» during its operations in a future.


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