Strong lensing constraints on primordial black holes as a dark matter candidate
Strong lensing constraints on primordial black holes as a dark matter candidate
复制标题
作为暗物质候选者的原初黑洞受到强烈的透镜约束
DOI:
10.1093/mnras/stad1313
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发表时间:
2023
影响因子:
4.8
通讯作者:
Treu, Tommaso
中科院分区:
文献类型:
--
作者:
Dike, Veronica;Gilman, Daniel;Treu, Tommaso
Dark matter could comprise, at least in part, primordial black holes (PBHs). To test this hypothesis, we present an approach to constrain the PBH mass (MPBH) and mass fraction (fPBH) from the flux ratios of quadruply imaged quasars. Our approach uses an approximate Bayesian computation forward modelling technique to directly sample the posterior distribution ofMPBHandfPBH, while marginalizing over the subhalo mass function amplitude, spatial distribution, and the size of the lensed source. We apply our method to 11 quadruply imaged quasars and derive a new constraint on the intermediate-mass area of PBH parameter space 104M⊙<MPBH< 106M⊙. We obtain an upper limitfPBH< 0.17 (95 per cent confidence limit). This constraint is independent of all other previously published limits.