The Basics of Primordial Black Hole Formation and Abundance Estimation

نویسندگان

چکیده

This paper is a biased review of the primordial black hole (PBH) formation and abundance estimation. We first three-zone model for PBH to help an intuitive understanding process. Then, more accurate analyses, we introduce necessary tools such as cosmological long-wavelength solutions, definition mass compaction function in spherically symmetric spacetime peak theory. Combining all these tools, calculate spectrum case monochromatic curvature power demonstration.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Supersymmetry and primordial black hole abundance constraints

and MBH is the PBH mass in grams. The standard picture of PBH evaporation is that all particles which appear elementary at the energy scale of the PBH and have rest mass less than TBH are emitted directly [3]. For instance PBHs with TBH above the QCD quark-hadron transition scale ΛQH ≈ 250− 300 MeV, emit relativistic quark and gluon jets which then fragment into photons, leptons and hadrons as ...

متن کامل

Dynamics of Primordial Black Hole Formation

Primordial overdensities seeded, for instance, by inflation or topological defects may collapse to primordial black holes (PBHs) during early radiation-dominated eras if they exceed a critical threshold [1,2]. This particular PBH formation process, which is examined in this paper, occurs when an initially super-horizon size region of order unity overdensity crosses into the horizon and recollap...

متن کامل

Primordial Black Hole Formation from Inflaton

Measurements of the distances to SNe Ia have produced strong evidence that the Universe is really accelarating, implying the existence of a nearly uniform component of dark energy with the simplest explanation as a cosmological constant. In this paper a small changing cosmological term is proposed, which is a function of a slow-rolling scalar field, by which the de Sitter primordial black holes...

متن کامل

Primordial Black Hole Formation in Supergravity

We study a double inflation model (a preinflation + a new inflation) in supergravity and discuss the formation of primordial black holes which may be identified with massive compact halo objects (MACHOs) observed in the halo of our galaxy. The preinflation drives an inflaton for the new inflation close to the origin through supergravity effects and the new inflation naturally occurs. If the tot...

متن کامل

Double inflation in supergravity and the primordial black hole formation

We study a double inflation model (a hybrid inflation + a new inflation) in supergravity and discuss the formation of primordial black holes (PBHs) with mass ∼ 10−20 − 10M⊙. We find that in a wide range of parameter space, we obtain PBHs which amount to Ω ≃ 1, i.e., PBH dark matter. Also, we find a set of inflation parameters which produces PBHs evaporating now. Those PBHs may be responsible fo...

متن کامل

ذخیره 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: Galaxies

سال: 2022

ISSN: ['2075-4434']

DOI: https://doi.org/10.3390/galaxies10060112