The cosmic merger rate of neutron stars and black holes
By Michela Mapelli, N. Giacobbo. Monthly notices of the Royal Astronomical Society, 2018
152 citations recorded by the source corpus.
Six gravitational wave detections have been reported so far, providing crucial insights on the merger rate of double compact objects. We investigate the cosmic merger rate of double neutron stars (DNSs), neutron star-black hole binaries (NSBHs) and black hole binaries (BHBs) by means of population-synthesis simulations coupled with the Illustris cosmological simulation. We have performed six different simulations, considering different assumptions for the efficiency of common envelope (CE) ejection and exploring two distributions for the supernova (SN) kicks. The current BHB merger rate derived from our simulations spans from $\sim{}150$ to $\sim{}240$ Gpc$^{-3}$ yr$^{-1}$ and is only mildly dependent on CE efficiency. In contrast, the current merger rates of DNSs (ranging from $\sim{}20$ to $\sim{}600$ Gpc$^{-3}$ yr$^{-1}$) and NSBHs (ranging from $\sim{}10$ to $\sim{}100$ Gpc$^{-3}$ yr$^{-1}$) strongly depend on the assumptions on CE and natal kicks. The merger rate of DNSs is consistent with the one inferred from the detection of GW170817 only if a high efficiency of CE ejection and low SN kicks (drawn from a Maxwellian distribution with one dimensional root mean square $\sigma{}=15$ km s$^{-1}$) are assumed.
Subfields: Astronomy and Astrophysics
View Paper: https://www.semanticscholar.org/paper/a759dd93783f92c5a87ecad6b68b313ca78eed97
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Citations in the corpus
- Merging black hole binaries with the SEVN code (2018, background): “…Bethe & Brown 1998; Belczynski et al. 2016a; de Mink & Mandel 2016; Giacobbo, Mapelli & Spera 2018; Mandel & de Mink 2016; Marchant et al. 2016; Mapelli & Giacobbo 2018) or from dynamical processes involving BHs in dense star clusters (e.g. Portegies Zwart & McMillan 2000; Colpi et al. 2003;…”
- Binary Black Hole Population Properties Inferred from the First and Second Observing Runs of Advanced LIGO and Advanced Virgo (2018, background): “…2016; Mapelli et al. 2017; Stevenson et al. 2017b; Tauris et al. 2017; Chruslinska et al. 2018; Giacobbo & Mapelli 2018; Giacobbo et al. 2018; Kruckow et al. 2018; Mapelli & Giacobbo 2018) or via chemically homogeneous evolution(de Mink & Mandel 2016; Mandel & de Mink 2016; Marchant et al. 2016).”
- COSMIC Variance in Binary Population Synthesis (2019, background): “…of the CE phase for DNS progenitors suggests CE efficiencies may be as high as α ≈ 5 (Fragos et al. 2019), which may also reduce the tension between rate predictions from CE channels (e.g., Mapelli & Giacobbo 2018) and the empirical DNS merger rate derived from LIGO/Virgo (Abbott et al. 2017).”
- The origin of spin in binary black holes (2019, background): “Indeed, Mapelli & Giacobbo (2018) showed that uncertainties in αCE correspond to a variation of a factor of around 1.5 in the BBH merger rate estimates while a factor of 10 for BNS merger rates.”
- The progenitors of compact-object binaries: impact of metallicity, common envelope and natal kicks (2018, background): “A more accurate study of the merger rate as a function of redshift is provided in the companion paper Mapelli & Giacobbo (2018). the aforementioned procedure: Rloc,i = 1 tlb(z = 0.1) 0.1 ∑ z=15 floc(z) SFR(z) [tlb(z+∆z)−tlb(z)] , (10) where Rloc,i is the local merger rate per unit volume and unit…”
- Merging black holes in young star clusters (2019, methodology): “…de Mink & Belczynski 2015; de Mink & Mandel 2016; Marchant et al. 2016; Belczynski et al. 2016a; Chruslinska et al. 2018; Mapelli et al. 2017; Giacobbo et al. 2018; Giacobbo & Mapelli 2018, 2019; Mapelli & Giacobbo 2018; Mapelli et al. 2018; Kruckow et al. 2018; Shao & Li 2018; Spera et al. 2018).”