The Evaporating Primordial Black Hole Fraction in Cool-core Galaxy Clusters
نویسندگان
چکیده
Recent studies of gamma-ray, cosmic-ray and radio data put stringent constraints on the fraction primordial black holes (PBHs) in our universe. In this article, we propose a new indirect method using X-ray luminosity cool-core clusters to constrain evaporating PBH for monochromatic, log-normal power-law mass distributions. The present results show that amount PBHs only constitutes minor component dark matter large parameter space. are consistent with close obtained from other multi-wavelength observations.
منابع مشابه
Primordial Structure of Massive Black Hole Clusters
We describe a mechanism of the primordial black holes formation that can explain the existence of a population of supermassive black holes in galactic bulges. The mechanism is based on the formation of black holes from closed domain walls. The origin of such domain walls could be a result of the evolution of an effectively massless scalar field during inflation. The initial non-equilibrium dist...
متن کاملBeyond the Cool Core: The Formation of Cool Core Galaxy Clusters
Why do some clusters have cool cores while others do not? In this paper, cosmological simulations, including radiative cooling and heating, are used to examine the formation and evolution of cool core (CC) and non-cool core (NCC) clusters. Numerical CC clusters at z = 0 accreted mass more slowly over time and grew enhanced cool cores via hierarchical mergers; when late major mergers occurred, t...
متن کاملThe Impact of Star Formation on Cool Core Galaxy Clusters
We present results from recent simulations of the formation and evolution of clusters of galaxies in a ΛCDM cosmology. These simulations contain our most physically complete input physics to date including radiative cooling, star formation that transforms rapidly cooling material into aggregate star particles and we also model the thermal feedback from resulting supernovae in the star particles...
متن کاملMid - Infrared Spectra of Cool - Core Galaxy Clusters
We have obtained mid-infrared spectra of nine cool-core galaxy clusters with the Infrared Spectrograph aboard the Spitzer Space Telescope. X-ray, ultraviolet and optical observations have demonstrated that each of these clusters hosts a cooling flow which seems to be fueling vigorous star formation in the brightest cluster galaxy. Our goal is to use the advantages of the mid-infrared band to im...
متن کاملEvaporating loop quantum black hole
In this paper we obtain the black hole metric from a semiclassical analysis of loop quantum black hole. Our solution and the Schwarzschild one tend to match well at large distances from Planck region. In r = 0 the semiclassical metric is regular and singularity free in contrast to the classical one. By using the new metric we calculate the Hawking temperature and the entropy. For the entropy we...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2021
ISSN: ['2041-8213', '2041-8205']
DOI: https://doi.org/10.3847/1538-4357/abee72