A5074848904- Radio Astronomy Observations and Technology
- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Radio Wave Propagation Studies
- Astro and Planetary Science
- Ionosphere and magnetosphere dynamics
- Astronomical Observations and Instrumentation
- Lightning and Electromagnetic Phenomena
- Advanced Research in Science and Engineering
- Geophysics and Gravity Measurements
- Space exploration and regulation
- Stellar, planetary, and galactic studies
- GNSS positioning and interference
- Advanced Control and Stabilization in Aerospace Systems
- Spacecraft Design and Technology
- Antenna Design and Optimization
- Plasma Diagnostics and Applications
- Solar and Space Plasma Dynamics
- Astronomy and Astrophysical Research
- Historical Geography and Cartography
- Geomagnetism and Paleomagnetism Studies
- Superconducting and THz Device Technology
- High voltage insulation and dielectric phenomena
- Space Satellite Systems and Control
- Fusion and Plasma Physics Studies
Institute of Radio Astronomy
2011-2021
National Academy of Sciences of Ukraine
2002-2021
This paper describes digital radio astronomical receivers used for decameter and meter wavelength observations. Since 1998, performing on-the-fly dynamic spectrum calculations or waveform data recording without loss have been at the UTR-2 telescope, URAN VLBI system, GURT new generation telescope. Here, we detail these developed operation in strong interference environment that prevails range. Data collected with allowed us to discover numerous objects phenomena low frequencies, a summary of...
PACS numbers: 95.55.Jz, 95.30.-k, 95.55.-n Purpose: define and theoretically substantiate the range of astrophysical problems that may be efficiently solved using small antenna arrays. Design/methodology/approach: Observation parameters configurations a set arrays included in future Giant Ukrainian radio telescope, have been derived based on theoretical analysis scientific results obtained by UTR-2 URAN telescopes. Results: We proved wide scope can low-frequency arrays, ranging from Solar...
The Saturn Electrostatic Discharges (SED) simultaneously recorded in the initial period of storm F at UTR-2 radio telescope and Cassini spacecraft are investigated. used FFT-spectral receiver operating 12−33 MHz, while serial spectrum analyzer RPWS (Radio Plasma Wave Science) 1.8−16 MHz. ground-based space-borne data processed have shown very good agreement. E-folding time SED its dependence on episode intensity were determined, too.
The results are reported of the very first study Saturn lightning fine time structure with superfine resolution (within hundreds to units nanoseconds). It is ascertained that has two intrinsic scales: from hundreds/tens microseconds. analysis was made dispersion measure on signals’ path storm in atmosphere ground-based telescope. Key words: high discrimination, lightnings Saturn, thin temporal pattern, dispersive delay , ionosphere, interplanetary medium Manuscript submitted 09.12.2013 Radio...
Purpose: A historical review of the experimental baselopment low-frequency radio astronomy in Ukraine, its foundation half a century ago by an outstanding scientist S.Ya. Braude to current state. Design/methodology/approach: The constant progress electronic, computer and digital technologies, information telecommunication theory practice antenna receiving systems design, which introduction enriched hardware methodological ideology construction usage UTR-2, URAN, GURT telescopes, have been...
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Rapid progress currently takes place in the field of low-frequency radio astronomy meterâdecameterâhectometer range wavelengths. It is caused by a radical modernization existing telescopes, creation new generation instruments, space-borne observations, and development research on all classes astrophysical objects, including Solar System. On other hand, difficulties specific to known, which are technical, methodological, physical limitations. An effective strategy for overcoming these...
In 2013-2014, a new software and hardware controlling complex was developed installed on the UTR-2 radio telescope. Controlling is designed for planning observations of discrete cosmic sources areas celestial sphere, programming control pattern position with UTC time scale synchronization, monitoring codes execution, as well other systems. Operating telescope parameters are carrying out by host computer in local area network or Internet via unit based ARM microcontroller STMicroelectronics...
The purpose of the work is to develop testing and calibration technique large phased antenna arrays using reference noise generator as a standard signal source. This developed for array unique decameter wave radio telescope UTR-2, but they could be easy adapted similar with analog digital beam forming.
The low frequency radio astronomy (decameter-meter range, frequencies of 10-300 MHz) currently demonstrates rapid progress all over the world. New generations large antennas - LOFAR, LWA, MWA and others have been created in many countries. At same time Ukrainian astronomical systems UTR-2 URAN still remain largest most informative ones at lowest range available for ground-based (below 33 MHz), especially after their radical modernization during recent years. A great number top priority...
After twenty-five years of study on Saturn electrostatic discharges (SED) with the aid spacecrafts (Voyager I, II, Cassini) first successful ground-based observations radio telescopes UTR-2 were carried out. The result was unambiguous registration 70 events by instrument during storm E, which lasted about a month in January-February 2006. This work presents observation results Electrostatic Discharges at telescope, comparison detected SEDs Cassini spacecraft, correlation functions obtained...
The radio maps of distributed low-frequency emission for vast areas Northern Celestial Hemisphere, including the area near minimum galactic radiation (42º<δ 200 <45º, 7 h 45 m < α 8 35 ), were constructed based on sky survey with UTR-2 world-largest decameter wave telescope. two-temperature dependence background brightness temperature within 12.6 to 25 MHz is built different frequency pairs this range same coordinates ( Т – plots). This allows identify differential spectrum Galaxy...