Spectroscopic Variability of the Compact Planetary Nebula Hb 12

Astronomy Letters - We present the results of our new low-resolution spectroscopic observations of the young compact planetary nebula Hb 12 performed in 2011–2020 with SAI MSU telescopes. We...     

Some remarks on the hypothesis of relativistic beaming of pulsar emission

The hypothesis of the relativistic beaming of pulsar emission is discussed in connection with objections advanced by Manchesteret al. (1973). It is shown that the same pulse duration of some pulsars with the non-power-law spectrum over a wide frequency interval may be associated either with large source sizes in longitude, or with location of the emitting source at various distances from the rotation axis of the neutron star (depending on the emission frequency).     

Internal structure of simple S-bursts of Jovian decameter-wavelength emission

The fine internal structure of fundamental Jovian decameter-wavelength millisecond outbursts (S-bursts) is studied. Broadband data obtained with the Waveform Receiver (WFR) on the UTR-2 decameter radio telescope have been analyzed using wavelet transforms. The millisecond S-bursts have a complex internal pulse microstructure, whose parameters are presented. Our results offer new prospects for understanding Jovian decameter-wavelength emission.     

Peculiarities of Stratospheric Temperature Stratification Measurements by the Microwave Radiometry Method

Izvestiya, Atmospheric and Oceanic Physics - In this paper, we consider the peculiarities of using the microwave radiometry method for remote sensing of the thermal stratification of the high...