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Nonlinear structure formation for fermionic dark matter particles leads to dark matter density profiles with a degenerate compact core surrounded by a diluted halo. For a given fermion mass, the core has a critical mass ...

JWST has revealed an abundance of low-luminosity active galactic nuclei (AGN) at high redshifts ( z  >  3), pushing the limits of black hole (BH) science in the early Universe. Results have claimed that these BHs are s...

We study a global transonic solution for a relativistic, magnetized, viscous advective accretion flow around a rotating black hole, incorporating the effects of mass and angular momentum loss through winds. Our model con...

Context. Many low-redshift active galactic nuclei harbor a supermassive black hole accreting matter at low or medium rates. At such rates, the accretion flow usually consists of a cold optically thick disk, plus a hot, l...

Mobile Ad-Hoc Networks (MANET) is a type of ad-hoc networks which use less infrastructure, that means the nodes in this network forward the massages without the need of infrastructure such as routers, switches etc. One o...

Abstract The memory-burden effect stabilizes the evaporating Primordial Black Holes (PBHs) before its complete decay. This also suppresses the evaporation flux via the entropy factor to the k-th power and circumvents sev...

Abstract We investigate the oscillation of the Kasner exponent $$p_t$$ p t near the critical point of hairy black holes dual to holographic superfluid and reveal a clear inverse periodicity $$f(T_c/(T_c-T))$$ f ( T c / (...

Abstract We establish a general no-inner horizon theorem for a wide class of static anisotropic black holes in Einstein gravity. Working in an orthonormal frame, we show that anisotropic scaling inevitably induces a non-...

We compute the supersymmetric entropy of the most general BPS black hole in 4d $\mathcal{N}=2$ supergravity coupled to $n_V$ vector multiplets, obtained from Type IIA string theory compactified on a Calabi--Yau threefold...

This book is based on the lecture notes of the course on black hole astrophysicsgiven at the University of La Plata, Argentina, by one of us (GER). The materialaims at advanced undergraduate and graduate students with in...

On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal. The signal sweeps upwards in frequency fro...

Materias / palabras clave: Physics; Event horizon; Black hole (networking); Black hole thermodynamics; Gravitation; Entropy (arrow of time); Baryon; Micro black hole; Quantum mechanics; Event (particle physics); Particle physics; Computer network

Materias / palabras clave: Science; Black holes (Astronomy); Relativity; Light; Ciencias; Divulgación; Agujeros negros (Astronomía); Relatividad (Física); Luz

Materias / palabras clave: Black holes (Astronomy); Agujeros negros; Astronomía; Astronomy

Materias / palabras clave: Agujeros negros (Astronomía); Física; Filosofía; Cosmología; Cosmology; Black holes (Astronomy); Fisica; Filosofia; Cosmologia; Astronomia

Black holes with a cosmological origin, the so-called primordial black holes, might have formed in the early Universe from different mechanisms. In this work, we investigate the cosmic evolution of the early Universe ins...

Stellar-mass black holes (BHs) surrounded by neutrino-dominated accretion flows (NDAFs) are a leading central engine of gamma-ray bursts (GRBs). In this work, we investigate the electron fraction distribution in NDAFs wi...

In this paper, the model of radial motion of dusty matter for the spherically symmetric case in General Relativity (GR) was developed. The model can be used, in particular, to describe galactic halos of dark matter. The ...