Published February 1, 2020 | Version v1
Journal article

Cosmic textures and global monopoles as seeds for super-massive black holes

  • 1. Department of Physics, McGill University, Montréal, QC, H3A 2T8 (Canada)
  • 2. CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026 (China)

Description

We consider theories with global monopole or global texture defects and compute the number density of nonlinear seed fluctuations as a function of mass and redshift. Specifically, we focus on the mass range which is expected to be relevant for seeding supermassive black holes. We find that there is an interesting range of symmetry breaking scales for which the density of seeds is larger that what is predicted in the standard cosmological model with Gaussian primordial fluctuations. Hence, global defects may help in light of the mounting tension between the standard cosmological model and observations of supermassive black hole candidates at high redshifts.

Availability note (English)

Available from http://dx.doi.org/10.1088/1475-7516/2020/02/002

Additional details

Publishing Information

Journal Title
Journal of Cosmology and Astroparticle Physics
Journal Volume
2020
Journal Issue
02
Journal Page Range
p. 002
ISSN
1475-7516

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
52074276
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
BLACK HOLES; COSMOLOGICAL MODELS; DENSITY; FLUCTUATIONS; MASS; RED SHIFT; STANDARD MODEL; SYMMETRY BREAKING
Descriptors DEC
FIELD THEORIES; GRAND UNIFIED THEORY; MATHEMATICAL MODELS; PARTICLE MODELS; PHYSICAL PROPERTIES; QUANTUM FIELD THEORY; UNIFIED GAUGE MODELS; VARIATIONS