English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

If very low mass primordial black holes (PBH) within the asteroid/moon-massrange indeed reside in galactic dark matter halos, they must necessarilycollide with galactic neutron stars (NSs). These collisions must, againnecessarily, form light black holes (LBHs) with masses of typical NSs, $M_{\rmLBH} \approx \,1-2\,M_{\odot}$. LBHs may be behind events already detected byground-based gravitational-wave detectors (GW170817, GW190425, and others suchas a mixed stellar black hole-neutron star mass event GW191219_163120), andmost recently by microlensing (OGLE-BLG-2011-0462). Although the status ofthese observations as containing LBHs is not confirmed, there is no questionthat gravitational-wave detectors and microlensing are in principle and inpractice capable of detecting LBHs. We have calculated the creation rate ofLBHs resulting from these light primordial black hole collisions with neutronstars. On this basis, we claim that if improved gravitational-wave detectorsand microlensing statistics of the LBH events would indicate that the number ofLBHs is significantly lower that what follows from the calculated creationrate, then this would be an unambiguous proof that there is no significantlight PBH contribution to the galactic dark matter halos. Otherwise, ifobserved and calculated numbers of LBHs roughly agree, then the hypothesis ofprimordial black hole existence gets strong observational support, and inaddition their collisions with neutron stars may be considered a naturalcreation channel for the LBHs, solving the problem of their origin, as it isknown that they cannot be a product of standard stellar evolution.

A Robust Test of the Existence of Primordial Black Holes in Galactic Dark Matter Halos