9 citations · 24 across the 9 of their papers we have counts for
11 papers
Do Primordial Black Hole Clusters Survive the Galaxy? Collisional Disruption and Microlensing Implications
M. V. Tkachev, S. V. Pilipenko
We study the collisional disruption of primordial black hole (PBH) clusters in the Milky Way halo. Encounters between clusters strip PBHs into a diffuse component, and the fraction…
Origin of monolithic high-z galaxies and UV luminosity of mergering high-z galaxies in the cosmological model with non-standard spectrum of density perturbations
Yu. N. Eroshenko, V. N. Lukash, E. V. Mikheeva +2
The James Webb Space Telescope (JWST) has detected an unexpectedly large number of galaxies at redshifts compared to the predictions of the standard CDM model. One of…
Absorption in the 21 cm Hydrogen Line at as a Sensitive Tool for the Construction of a Cosmological Model on Small Scales
Yu. N. Eroshenko, V. N. Lukash, E. V. Mikheeva +2
The cosmic microwave background absorption intensity in the 21 cm line of neutral hydrogen in the presence of additional power in the form of a "bump" in the spectrum of cosmologic…
Constraints on Features in the Cosmological Power Spectrum from Observations of the Epoch of Reionization
O. R. Skorikov, S. V. Pilipenko, M. V. Tkachev
We consider cosmological models with a power spectrum of perturbations featuring an enhanced amplitude on dwarf galaxy scales (with a "bump" or a "tilt"). Early formation of a larg…
Testing Bump in the Cosmological Power Spectrum Using Dwarf Galaxies
Maxim Zabelkin, Sergey Drozdov, Oleg Skorikov +1
We analyze the possibility of using observational data on nearby dwarf galaxies -- their luminosity functions and spatial distributions -- to constrain deviations of the cosmologic…
High- SMBHs in Cosmological Models with Enhanced Power Spectra
M. V. Tkachev, S. V. Pilipenko, E. V. Mikheeva +1
We consider the impact of non-power-law spectra of matter perturbations with a bump or with a blue tilt at small scales on the evolution of supermassive black holes (SMBHs) located…
On the increase in the concentration of primordial black holes in the halos of dwarf galaxies
S. V. Pilipenko, M. V. Tkachev, N. R. Arakelyan
Through numerical experiments, we have predicted that if dark matter (DM) contains even a small fraction, , of primordial black holes (PBHs), during the formation o…
Properties of Central Regions of the Dark Matter Halos in the Model with a Bump in the Power Spectrum of Density Perturbations
Yu. N. Eroshenko, V. N. Lukash, E. V. Mikheeva +2
A surprisingly large number of galaxies with masses of at redshifts of are discovered with the James Webb Space Telescope. A possible explanation…
Inner structure of dark matter halos at high in cosmological models with non-power-law primordial spectra
M. V. Tkachev, S. V. Pilipenko, E. V. Mikheeva +1
We consider three cosmological models with non-power-law spectra of primordial density perturbations and test them against CDM in density profiles of dark matter halos. We found…
Least response method to separate CMB spectral distortions from foregrounds
J. -P. Maillard, A. Mihalchenko, D. Novikov +3
We present a signal-foreground separation algorithm for filtering observational data to extract spectral distortions of the cosmic microwave background (CMB). Our linear method, ca…
Search for isolated Galactic Centre stellar mass black holes in the IR and sub-mm range
P. B. Ivanov, V. N. Lukash, S. V. Pilipenko +1
We investigate a possibility to find an accreting isolated black hole (IBH) with mass within Central Galactic Molecular Zone (CMZ) in the submillimetre a…