Stochastic background of gravitational waves generated by pre-galactic black holes

Pereira, Eduardo S.; Miranda, Oswaldo D.

doi:10.1111/j.1365-2966.2009.15774.x

Cited by 20 publications

(47 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where m(t) is the mass of a star that has a lifetime of t. The mass of the remnant m r depends on the progenitor mass (Pereira & Miranda 2010). The stellar IMF Φ(m) follows the standard Salpeter (1955) form, Φ(m) = Am −2.35 , with a mass range of 0.1 M < M < 140 M .…”

Section: Model Of Star Formation Ratementioning

confidence: 99%

“…To be self-contained, we give a summary of the most important ingredients of this model in this section. Following Pereira & Miranda (2010), the equation that governs the total gas density, which includes the baryon accretion rate, the formation of stars through the transfer of baryons and the gas ejection by stars, is determined in a self-consistent way.…”

Section: Model Of Star Formation Ratementioning

confidence: 99%

“…We adopt a hierarchical structure formation model from Pereira & Miranda (2010), in which the CSFR is derived using the PressSchechter (PS) like formalism. To be self-contained, we give a summary of the most important ingredients of this model in this section.…”

Section: Model Of Star Formation Ratementioning

confidence: 99%

See 2 more Smart Citations

Progenitor delay-time distribution of short gamma-ray bursts: Constraints from observations

Hao

Yuan

2013

A&A

View full text Add to dashboard Cite

Context. The progenitors of short gamma-ray bursts (SGRBs) have not yet been well identified. The most popular model is the merger of compact object binaries (NS-NS/NS-BH). However, other progenitor models cannot be ruled out. The delay-time distribution of SGRB progenitors, which is an important property to constrain progenitor models, is still poorly understood. Aims. We aim to better constrain the luminosity function of SGRBs and the delay-time distribution of their progenitors with newly discovered SGRBs.Methods. We present a low-contamination sample of 16 Swift SGRBs that is better defined by a duration shorter than 0.8 s. By using this robust sample and by combining a self-consistent star formation model with various models for the distribution of time delays, the redshift distribution of SGRBs is calculated and then compared to the observational data. Results. We find that the power-law delay distribution model is disfavored and that only the lognormal delay distribution model with the typical delay τ 3 Gyr is consistent with the data. Comparing Swift SGRBs with T 90 > 0.8 s to our robust sample (T 90 < 0.8 s), we find a significant difference in the time delays between these two samples. Conclusions. Our results show that the progenitors of SGRBs are dominated by relatively long-lived systems (τ 3 Gyr), which contrasts the results found for Type Ia supernovae. We therefore conclude that primordial NS-NS systems are not favored as the dominant SGRB progenitors. Alternatively, dynamically formed NS-NS/BH and primordial NS-BH systems with average delays longer than 5 Gyr may contribute a significant fraction to the overall SGRB progenitors.

show abstract

Section: Model Of Star Formation Ratementioning

confidence: 99%

Section: Model Of Star Formation Ratementioning

confidence: 99%

See 1 more Smart Citation

Progenitor delay-time distribution of short gamma-ray bursts: Constraints from observations

Hao

Yuan

2013

A&A

View full text Add to dashboard Cite

show abstract

“…Here, we adopt the self-consistent SFR model of Ref. 88. In the framework of hierarchical structure formation, Ref.…”

Section: Probing Star Formation In Dark Matter Halosmentioning

confidence: 99%

Gamma-ray burst cosmology: Hubble diagram and star formation history

Wei

2017

Int. J. Mod. Phys. D

View full text Add to dashboard Cite

We briefly introduce the disadvantages for Type Ia supernovae (SNe Ia) as standard candles to measure the Universe, and suggest Gamma-ray bursts (GRBs) can serve as a powerful tool for probing the properties of high redshift Universe. We use GRBs as distance indicators in constructing the Hubble diagram at redshifts beyond the current reach of SNe Ia observations. Since the progenitors of long GRBs are confirmed to be massive stars, they are deemed as an effective approach to study the cosmic star formation rate (SFR). A detailed representation of how to measure high-z SFR using GRBs is presented. Moreover, first stars can form only in structures that are suitably dense, which can be parameterized by defining the minimum dark matter halo mass M min . M min must play a crucial role in star formation. The association of long GRBs with the collapses of massive stars also indicates that the GRB data can be applied to constrain the minimum halo mass M min and to investigate star formation in dark matter halos.

show abstract

“…Collapse of Population II and III stars, phase transitions in the early Universe, cosmic strings and a variety of binary stars are some examples of sources that could produce such a putative background of GWs (see e.g. de Araujo, Miranda & Aguiar , , ; Maggiore ; Regimbau & de Freitas Pacheco ; Miranda, de Araujo & Aguiar ; de Araujo & Miranda ; Sandick et al ; Suwa et al ; Giovannini ; Pereira & Miranda , among others).…”

Section: Introductionmentioning

confidence: 99%

Stochastic backgrounds of gravitational waves from cosmological sources - the role of dark energy

Miranda

2012

Monthly Notices of the Royal Astronomical Society

Self Cite

View full text Add to dashboard Cite

In this work we investigate the detectability of the gravitational stochastic background produced by cosmological sources in scenarios of structure formation. The calculation is performed in the framework of hierarchical structure formation using a Press-Schechter-like formalism. The model considers the coalescences of three kinds of binary systems, namely double neutron stars (NS-NS), the neutron star-black hole (NS-BH) binaries and the black hole-black hole (BH-BH) systems. We also included in the model the core-collapse supernovae leaving black holes as compact remnants. In particular, we use two different dark energy scenarios, specifically cosmological constant ( ) and Chaplygin gas, in order to verify their influence on the cosmic star formation rate, the coalescence rates and the gravitational wave backgrounds. We calculate the gravitational wave signals separately for each kind of source and also determine their collective contribution for the stochastic background of gravitational waves. Concerning the compact binary systems, we verify that these sources produce stochastic backgrounds with signal-to-noise ratio (S/N) values ∼1.5 (∼0.90) for NS-NS, ∼0.50 (∼0.30) for NS-BH, ∼0.20 (∼0.10) for BH-BH and ∼0.14 (∼0.07) for core-collapse supernovae for a pair of advanced LIGO detectors in the cosmological-constant (Chaplygin gas) cosmology. Particularly, the sensitivity of the future third-generation detectors such as the Einstein Telescope (ET), in the triangular configuration, could increase the present S/N values by a high factor (∼300-1000) when compared to the S/N calculated for advanced LIGO detectors. As an example, the collective contribution of these sources can produce S/N ∼ 3.3 (∼1.8) for the (Chaplygin gas) cosmology for a pair of advanced LIGO interferometers and within the frequency range ∼10 Hz-1.5 kHz. Considering ET we have S/N ∼ 2200 (∼1300) for the (Chaplygin gas) cosmology. Thus, the third-generation gravitational wave detectors could be used to reconstruct the history of star formation in the Universe and to contribute for the characterization of the dark energy, for example, identifying if there is evidence for the evolution of the dark energy equation-of-state parameter w(a).

show abstract

Stochastic background of gravitational waves generated by pre-galactic black holes

Cited by 20 publications

References 51 publications

Progenitor delay-time distribution of short gamma-ray bursts: Constraints from observations

Progenitor delay-time distribution of short gamma-ray bursts: Constraints from observations

Gamma-ray burst cosmology: Hubble diagram and star formation history

Stochastic backgrounds of gravitational waves from cosmological sources - the role of dark energy

Contact Info

Product

Resources

About