TY - JOUR

T1 - Investigation of the dynamics of interaction of a cluster of primordial black holes with stellar cluster

AU - Belotsky, Konstantin

AU - Krasnov, Maxim

AU - Pugachev, Stanislav

PY - 2024/10/30

Y1 - 2024/10/30

N2 - In this paper, we revise dynamical constraint on primordial black hole (PBH) abundance following the effect of their interaction with stellar cluster in dwarf galaxy Eridanus II in case of PBH clustering. We consider scattering of stars on PBH cluster as a whole, dynamical friction of stars inside cluster and finally we are taking into account tidal forces' effects due to the finite size of PBH cluster. We obtain the rate of change of kinetic energy of the stars and PBHs to make conclusion about constraints on clusters.

AB - In this paper, we revise dynamical constraint on primordial black hole (PBH) abundance following the effect of their interaction with stellar cluster in dwarf galaxy Eridanus II in case of PBH clustering. We consider scattering of stars on PBH cluster as a whole, dynamical friction of stars inside cluster and finally we are taking into account tidal forces' effects due to the finite size of PBH cluster. We obtain the rate of change of kinetic energy of the stars and PBHs to make conclusion about constraints on clusters.

KW - Dark matter

KW - dynamics of gravitational systems

KW - primordial black holes

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85199200829&origin=inward&txGid=2ed3a1f35141f619eef0d162afb90191

UR - https://www.mendeley.com/catalogue/403f5d01-ef13-3fb9-ac23-05c43a51beab/

U2 - 10.1142/S0218271823400102

DO - 10.1142/S0218271823400102

M3 - Article

VL - 33

JO - International Journal of Modern Physics D

JF - International Journal of Modern Physics D

SN - 0218-2718

IS - 14

M1 - 2340010

ER -