Combining constraints from microlensing and Lyman-α forest, we provide a simple argument to show that large spatial clustering of stellar-mass primordial black holes at the time of formation, such as the one induced by the presence of large non-Gaussianities, is ruled out. Therefore, it is not possible to evade existing constraints preventing stellar-mass primordial black holes from being a dominant constituent of the dark matter by boosting their initial clustering.
Ruling Out Initially Clustered Primordial Black Holes as Dark Matter / De Luca, Valerio; Franciolini, Gabriele; Riotto, Antonio; Veermäe, Hardi. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 129:19(2022), p. 191302. [10.1103/physrevlett.129.191302]
Ruling Out Initially Clustered Primordial Black Holes as Dark Matter
Franciolini, Gabriele;Riotto, Antonio;
2022
Abstract
Combining constraints from microlensing and Lyman-α forest, we provide a simple argument to show that large spatial clustering of stellar-mass primordial black holes at the time of formation, such as the one induced by the presence of large non-Gaussianities, is ruled out. Therefore, it is not possible to evade existing constraints preventing stellar-mass primordial black holes from being a dominant constituent of the dark matter by boosting their initial clustering.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
