The importance of priors on LIGO-Virgo parameter estimation: the case of primordial black holes

  title={The importance of priors on LIGO-Virgo parameter estimation: the case of primordial black holes},
  author={Swetha Bhagwat and Valerio De Luca and Gabriele Franciolini and Paolo Pani and Antonio Walter Riotto},
  journal={Journal of Cosmology and Astroparticle Physics},
  pages={037 - 037}
The black holes detected by current and future interferometers can have diverse origins. Their expected mass and spin distributions depend on the specifics of the formation mechanisms. When a physically motivated prior distribution is used in a Bayesian inference, the parameters estimated from the gravitational-wave data can change significantly, potentially affecting the physical interpretation of certain gravitational-wave events and their implications on theoretical models. As a case study… 

From inflation to black hole mergers and back again: Gravitational-wave data-driven constraints on inflationary scenarios with a first-principle model of primordial black holes across the QCD epoch

Recent population studies have searched for a subpopulation of primordial black holes (PBHs) in the gravitational-wave (GW) events so far detected by LIGO/Virgo/KAGRA (LVK), in most cases adopting a

One-loop correction to the enhanced curvature perturbation with local-type non-Gaussianity for the formation of primordial black holes

As one of the promising candidates of cold dark matter (DM), primordial black holes (PBHs) were formed due to the collapse of over-densed regions generated by the enhanced curvature perturbations

Primordial black hole mergers from three-body interactions

Current gravitational-wave observations set the most stringent bounds on the abundance of primordial black holes (PBHs) in the solar mass range. This constraint, however, inherently relies on the

Constraining High-redshift Stellar-mass Primordial Black Holes with Next-generation Ground-based Gravitational-wave Detectors

The possible existence of primordial black holes in the stellar-mass window has received considerable attention because their mergers may contribute to current and future gravitational-wave

Detection of early-universe gravitational-wave signatures and fundamental physics

Detection of a gravitational-wave signal of non-astrophysical origin would be a landmark discovery, potentially providing a significant clue to some of our most basic, big-picture scientific

Searching for mass-spin correlations in the population of gravitational-wave events: The GWTC-3 case study

One fundamental goal of the newly born gravitational wave astronomy is discovering the origin of the observed binary black hole mergers. Towards this end, identifying features in the growing wealth

A Novel Approach to Topological Graph Theory with R-K Diagrams and Gravitational Wave Analysis

This paper proposes a novel approach for encoding vectorized associations between data points for the purpose of enabling smooth transitions between Graph and Topological Data Analytics, and provides an efficient computational framework via the (R-K) Pipeline which can be used via the R-K Toolkit for filter based ML Driven models for unique topological signature identification and classification problems.

How to assess the primordial origin of single gravitational-wave events with mass, spin, eccentricity, and deformability measurements

Gabriele Franciolini,1, 2, ∗ Roberto Cotesta,3 Nicholas Loutrel,1, 2 Emanuele Berti,3 Paolo Pani,1, 2 and Antonio Riotto4 1Dipartimento di Fisica, Sapienza Università di Roma, Piazzale Aldo Moro 5,

Detecting Subsolar-Mass Primordial Black Holes in Extreme Mass-Ratio Inspirals with LISA and Einstein Telescope.

Primordial black holes possibly formed in the early Universe could provide a significant fraction of the dark matter and would be unique probes of inflation. A smoking gun for their discovery would



Bayesian analysis of LIGO-Virgo mergers: Primordial versus astrophysical black hole populations

We conduct a thorough Bayesian analysis of the possibility that the black hole merger events seen in gravitational waves are primordial black hole (PBH) mergers. Using the latest merger rate models

Impact of Bayesian Priors on the Characterization of Binary Black Hole Coalescences.

This work reanalyze the first detections performed by the twin LIGO interferometers using alternative (and astrophysically motivated) prior assumptions and finds different prior distributions can introduce deviations in the resulting posteriors that impact the physical interpretation of these systems.

The evolution of primordial black holes and their final observable spins

Primordial black holes in the mass range of ground-based gravitational-wave detectors can comprise a significant fraction of the dark matter. Mass and spin measurements from coalescences can be used

Primordial black holes confront LIGO/Virgo data: current situation

The LIGO and Virgo Interferometers have so far provided 11 gravitational-wave (GW) observations of black-hole binaries. Similar detections are bound to become very frequent in the near future. With

Primordial black holes as dark matter: converting constraints from monochromatic to extended mass distributions

The model in which Primordial Black Holes (PBHs) constitute a non-negligible fraction of the dark matter has (re)gained popularity after the first detections of binary black hole mergers. Most of the

Merger rate of primordial black-hole binaries

Primordial black holes (PBHs) have long been a candidate for the elusive dark matter (DM), and remain poorly constrained in the ~20-100 Msun mass range. PBH binaries were recently suggested as the

Lyman-α Forest Constraints on Primordial Black Holes as Dark Matter.

New limits on the PBH abundance are presented, from a comprehensive analysis of high-resolution high-redshift Lyman-α forest data, and predictions to nonmonochromatic PBH mass distributions are extended, ruling out large regions of the parameter space for some of the most viable PBH extended mass functions.

Primordial black hole dark matter and the LIGO/Virgo observations

  • K. Jedamzik
  • Physics
    Journal of Cosmology and Astroparticle Physics
  • 2020
The LIGO/Virgo collaboration have by now detected the mergers of ten black hole binaries via the emission of gravitational radiation. The hypothesis that these black holes have formed during the

Cosmic microwave background limits on accreting primordial black holes

Interest in the idea that primordial black holes (PBHs) might comprise some or all of the dark matter has recently been rekindled following LIGO’s first direct detection of a binary-black-hole