The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We investigate the dynamic spectra of the Sun and jovian decametric radiation obtained by the authors with the radio telescopes UTR-2 and URAN-2 (Kharkov, Poltava, Ukraine). We focus on the similar structures that appear on the dynamic spectra of those objects: S-bursts, drifting pairs, absorption bursts and zebra patterns. Similarity in structures allows us to assume that the plasma processes in...
We propose a new method for the determination of the rotation measure (RM) for pulse sources in the decameter wavelength range. This method allows us to define RM with accuracy up to 10−4 [1–3], which had never been achieved in any known methods. The method is effective in the consideration of individual pulses, and allows us to determine RM along the pulse profile.
The study of SEDs with high time resolution was made possible due to the regular modernization of the receiving equipment on the largest decameter radio telescope UTR-2. The obtained sensitivity allowed to resolve the microstructure of lightning discharges for the first time and to estimate the intensity of bursts. In addition the dispersion delay gives us a very important criterion that let reliably...
The sources of rapidly varying emission represent the wide branch of astrophysics, which can provide the unique information about the exotic cosmic sources, remote compact areas and the remnants of explosive or dynamic events. These sources also can serve the probes of the interstellar medium due to the propagation effects - dispersion, scattering, and Faraday rotation of polarization plane of linearly...
We report the history of the first recorded ground-based radio detection of Saturn’s lightning using the Ukrainian UTR-2 radiotelescope at frequencies from 20 to 25MHz. The observations were performed between 29 January and 3 February 2006, during which lighting activity (E-storm) on Saturn was detected by the radio experiment onboard Cassini spacecraft. The minimum detectable flux density (1σ-level)...
This paper presents the investigation of fast processes in radio emission of pulsars, magnetars, RRATs, etc. demands a long continuous recording with high time resolution. Now pulse radio emissions from magnetosphere of different kind of neutron stars are observed in the range from decameter wave length up to 40 GHz. In the lowest one - decameter wave range it's very difficult to achieve high time...
A spectrum analyzer is designed and constructed on the base of a direct conversion receiver. A millimeter-wave heterodyne receiver is applied to expand input frequency range of the spectrum analyzer. At present the spectrum analyzer operates at frequencies between 149 and 212 MHz, i.e. 64 channels with 1 MHz resolution.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.