Are binary black hole mergers and long gamma-ray bursts drawn from the same black hole population?

Arcier, Benjamin; Atteia, Jean-Luc

doi:10.48550/arxiv.2204.05013

Cited by 2 publications

(1 citation statement)

References 64 publications

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“…Graham et al 2009;Levesque et al 2010;Elliott et al 2013;Schady et al 2015;Michałowski et al 2018), the possibility of tidally spun-up progenitors in binaries is considered (see e.g. Podsiadlowski et al 2004;Izzard et al 2004;Petrovic et al 2005;Detmers et al 2008;Bavera et al 2022;Arcier & Atteia 2022, for further discussion of the predictions and implications of this progenitor channel). In these cases, tidal interactions with a companion can maintain rotation where mass loss would otherwise spin the star down.…”

Section: Grb Progenitor Modelsmentioning

confidence: 99%

Towards an understanding of long gamma-ray burst environments through circumstellar medium population synthesis predictions

Chrimes

Gompertz

Канн

et al. 2022

Monthly Notices of the Royal Astronomical Society

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The temporal and spectral evolution of gamma-ray burst (GRB) afterglows can be used to infer the density and density profile of the medium through which the shock is propagating. In long-duration (core-collapse) GRBs, the circumstellar medium (CSM) is expected to resemble a wind-blown bubble, with a termination shock separating the stellar wind and the interstellar medium (ISM). A long standing problem is that flat density profiles, indicative of the ISM, are often found at lower radii than expected for a massive star progenitor. Furthermore, the presence of both wind-like environments at high radii and ISM-like environments at low radii remains a mystery. In this paper, we perform a ‘CSM population synthesis’ with long GRB progenitor stellar evolution models. Analytic results for the evolution of wind blown bubbles are adjusted through comparison with a grid of 2D hydrodynamical simulations. Predictions for the emission radii, ratio of ISM to wind-like environments, wind and ISM densities are compared with the largest sample of afterglow-derived parameters yet compiled, which we make available for the community. We find that high ISM densities of n ∼ 1000 cm−3 best reproduce observations. If long GRBs instead occur in typical ISM densities of n ∼ 1 cm−3, then the discrepancy between theory and observations is shown to persist at a population level. We discuss possible explanations for the origin of variety in long GRB afterglows, and for the overall trend of CSM modelling to over-predict the termination shock radius.

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Section: Grb Progenitor Modelsmentioning

confidence: 99%

Towards an understanding of long gamma-ray burst environments through circumstellar medium population synthesis predictions

Chrimes

Gompertz

Канн

et al. 2022

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

show abstract

Towards an understanding of long gamma-ray burst environments through circumstellar medium population synthesis predictions

Chrimes,

Gompertz,

Kann

et al. 2022

Preprint

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The temporal and spectral evolution of gamma-ray burst (GRB) afterglows can be used to infer the density and density profile of the medium through which the shock is propagating. In long-duration (core-collapse) GRBs, the circumstellar medium (CSM) is expected to resemble a wind-blown bubble, with a termination shock separating the stellar wind and the interstellar medium (ISM). A long standing problem is that flat density profiles, indicative of the ISM, are often found at lower radii than expected for a massive star progenitor. Furthermore, the presence of both wind-like environments at high radii and ISM-like environments at low radii remains a mystery. In this paper, we perform a 'CSM population synthesis' with long GRB progenitor stellar evolution models. Analytic results for the evolution of wind blown bubbles are adjusted through comparison with a grid of 2D hydrodynamical simulations. Predictions for the emission radii, ratio of ISM to wind-like environments, wind and ISM densities are compared with the largest sample of afterglow-derived parameters yet compiled, which we make available for the community. We find that high ISM densities of 𝑛 ∼ 1000 cm −3 best reproduce observations. If long GRBs instead occur in typical ISM densities of 𝑛 ∼ 1 cm −3 , then the discrepancy between theory and observations is shown to persist at a population level. We discuss possible explanations for the origin of variety in long GRB afterglows, and for the overall trend of CSM modelling to over-predict the termination shock radius.

show abstract

Are binary black hole mergers and long gamma-ray bursts drawn from the same black hole population?

Cited by 2 publications

References 64 publications

Towards an understanding of long gamma-ray burst environments through circumstellar medium population synthesis predictions

Towards an understanding of long gamma-ray burst environments through circumstellar medium population synthesis predictions

Towards an understanding of long gamma-ray burst environments through circumstellar medium population synthesis predictions

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