27 citations · 107 across the 14 of their papers we have counts for
14 papers
Ultra-low supply voltage crystal quartz oscillator
A. M. Korolev, V. M. Shulga, O. G. Turutanov
An ultra-low-voltage crystal quartz oscillator is proposed. The approach to its design is essentially based on using a HEMT operating in unsaturated dc regime and a quartz resonato…
Super-Eddington accretion in the Q2237+0305 quasar?
L. A. Berdina, V. S. Tsvetkova, V. M. Shulga
The interband time lags between the flux variations of the Q2237+0305 quasar have been determined from light curves in the Johnson-Cousins V, R, and I spectral bands. The values of…
Circumnuclear regions of different BPT types in star-forming MaNGA galaxies: AGN detectability
L. S. Pilyugin, E. K. Grebel, I. A. Zinchenko +3
We consider the circumnuclear regions of MaNGA galaxies. The spectra are classified as AGN-like, HII-region-like (or SF-like), and intermediate (INT) spectra according to their pos…
Effect of peculiar velocities on the gravitational potential in cosmological models with perfect fluids
Alvina Burgazli, Valerii Shulga, A. Emrah Yükselci +1
We consider a universe filled with perfect fluid with the constant equation of state parameter . In the theory of scalar perturbations, we study the effect of peculiar velocitie…
Thermal and Resonant Emission of Dark Ages Halos in the Rotational Lines of HeH
Yu. Kulinich, B. Novosyadlyj, V. Shulga +1
We analyse the thermal emission and resonant scattering of CMB radiation from the dark ages halos in the rotational lines of the helium hydride ion (HeH), one of the first ch…
Peculiar motions of the gas at the centre of the barred galaxy UGC 4056
I. A. Zinchenko, L. S. Pilyugin, F. Sakhibov +6
We derive the circular velocity curves of the gaseous and stellar discs of UGC 4056, a giant barred galaxy with an active galactic nucleus (AGN). We analyse UGC 4056 using the 2D s…