We present a search for gravitational waves from the coalescence of subsolar-mass black
hole binaries using data from the first half of Advanced LIGO and Virgo's third observing run …

Primordial black holes (PBHs) are known as one of the potential candidates for dark matter.
They are expected to have formed due to the direct gravitational collapse of density …

Hawking radiation from primordial black holes (PBH) can ionize and heat up neutral gas
during the cosmic dark ages, leaving imprints on the global 21-cm signal of neutral …

In this work, we investigate the merger rate of primordial black hole–neutron star (PBH-NS)
binaries in two widely studied modified gravity (MG) models: Hu–Sawicki f (R) gravity and …

In this work, we calculate the merger rate of primordial black hole–neutron star (PBH–NS)
binaries within the framework of ellipsoidal-collapse dark matter models and compare it with …

In this work, we study the effect of a high-precision semianalytical mass function on the
merger rate of primordial black holes (PBHs) in dark matter halos. For this purpose, we first …

Today, the existence of supermassive black holes (SMBHs) in the center of galactic halos is
almost confirmed. An extremely dense region referred to as dark-matter spike is expected to …

In this paper we consider a problem of formation and evolution of orbital parameters of a
binary primordial black hole (PBH) due to gravitational interaction with clustering cold dark …

We present the nonlinear growth of bound cosmological structures using the spherical
collapse approach in the shift-symmetric Galileon theories. In particular, we focus on the …

Interacting dark matter–dark energy (IDMDE) models can be considered as one of the
present challenges that may affect cosmic structures. The main idea of such models is that …