Using recent bounds on light, memory-burdened primordial black holes, this paper derives new upper limits on the curvature power spectrum, roughly P_R < 10^-1.7, for wavenumbers 4.5e18 to 1.8e21 Mpc^-1.
Constraining primordial black holes in dark matter with kinematics of dwarf galaxies
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We propose that the kinematical observations of dwarf galaxies can be used to constrain the primordial black hole's (PBH) abundance in dark matter since the presence of primordial black holes in star clusters will lead to the radial velocity dispersion of the system. For instance, using the velocity dispersion observations from Leo I we show that the primordial black hole fraction $f_{\rm PBH}\gtrsim 2.0\times(1~M_{\odot}/m_{\rm PBH})^2$ is ruled out at a 99.99\% confidence level. This method yields the most stringent limits on the PBH abundance at the mass scales $\sim (1-10^3)~M_{\odot}$ and tightly constrains the primordial origin of gravitational wave events observed by the LIGO experiments.
fields
astro-ph.CO 1years
2024 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Constraints on the primordial curvature power spectrum at small scales between $3\times 10^{18}$ and $4.5\times 10^{21}~\rm Mpc^{-1}$
Using recent bounds on light, memory-burdened primordial black holes, this paper derives new upper limits on the curvature power spectrum, roughly P_R < 10^-1.7, for wavenumbers 4.5e18 to 1.8e21 Mpc^-1.