scholarly journals Primordial black holes and stochastic gravitational wave background from inflation with a noncanonical spectator field

2021 ◽  
Vol 104 (8) ◽  
Author(s):  
Rong-Gen Cai ◽  
Chao Chen ◽  
Chengjie Fu
Keyword(s):  
Black Holes ◽  
Gravitational Wave ◽  
Primordial Black Holes ◽  
Gravitational Wave Background

scholarly journals Testing Primordial Black Holes with multi-band observations of the stochastic gravitational wave background

2021 ◽  
Vol 2021 (12) ◽  
pp. 012
Author(s):  
Matteo Braglia ◽  
Juan García-Bellido ◽  
Sachiko Kuroyanagi
Keyword(s):  
Black Holes ◽  
Gravitational Wave ◽  
Particle Physics ◽  
State Parameter ◽  
Mass Function ◽  
Late Time ◽  
Primordial Black Holes ◽  
Scale Invariant ◽  
Wide Range ◽  
Gravitational Wave Background

Abstract The mass distribution of Primordial Black Holes (PBHs) is affected by drops in the pressure of the early Universe plasma. For example, events in the standard model of particle physics, such as the W ±/Z 0 decoupling, the quark-hadron transition, the muon and pion becoming non-relativistic, and the annihilation of electrons and positrons, cause a suppression in the Equation of State parameter and leave peaks in the PBH mass function around 10-6, 2, 60, and 106 M ☉, respectively, in the case of a nearly scale-invariant primordial power spectrum. The superposition of unresolved mergers of such PBHs results in a stochastic gravitational-wave background (SGWB) that covers a wide range of frequencies and can be tested with future gravitational wave (GW) detectors. In this paper, we discuss how its spectral shape can be used to infer properties about inflation, the thermal history of the Universe, and the dynamics of binary formation in dense halos encoded in their merger rate formula. Although many of these physical effects are degenerate within the sensitivity of a single detector, they can be disentangled by the simultaneous observation of the SGWB at different frequencies, highlighting the importance of multi-frequency observations of GWs to characterize the physics of PBHs from the early to the late time Universe.

scholarly journals Testing stochastic gravitational wave signals from primordial black holes with optical telescopes

2021 ◽  
Vol 814 ◽  
pp. 136097
Author(s):  
Sunao Sugiyama ◽  
Volodymyr Takhistov ◽  
Edoardo Vitagliano ◽  
Alexander Kusenko ◽  
Misao Sasaki ◽  
...  
Keyword(s):  
Black Holes ◽  
Gravitational Wave ◽  
Primordial Black Holes ◽  
Optical Telescopes

scholarly journals GW150914: Implications for the Stochastic Gravitational-Wave Background from Binary Black Holes

2016 ◽  
Vol 116 (13) ◽  
Author(s):  
B. P. Abbott ◽  
R. Abbott ◽  
T. D. Abbott ◽  
M. R. Abernathy ◽  
F. Acernese ◽  
...  
Keyword(s):  
Black Holes ◽  
Gravitational Wave ◽  
Binary Black Holes ◽  
Gravitational Wave Background

scholarly journals Metallicity-constrained merger rates of binary black holes and the stochastic gravitational wave background

2016 ◽  
Vol 461 (4) ◽  
pp. 3877-3885 ◽  
Author(s):  
Irina Dvorkin ◽  
Elisabeth Vangioni ◽  
Joseph Silk ◽  
Jean-Philippe Uzan ◽  
Keith A. Olive
Keyword(s):  
Black Holes ◽  
Gravitational Wave ◽  
Binary Black Holes ◽  
Gravitational Wave Background
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