616 citations · 2.3k across the 29 of their papers we have counts for
29 papers
Triaxiality of the Milky Way dark matter halo and the microlensing optical depth towards the Large Magellanic Cloud
J. García-Bellido, M. R. S. Hawkins
The microlensing optical depth towards the Large Magellanic Cloud (LMC), , bounds the compact-object fraction of the Galactic dark matter halo, but is almost always ev…
A critical analysis of the recent OGLE limits on stellar mass primordial black holes in the halo of the Milky Way
M. R. S. Hawkins, J. García-Bellido
This paper is a response to recent claims that a population of primordial black holes in the Galactic halo has been ruled out by the OGLE collaboration. This claim was based on the…
Reanalysis of the MACHO constraints on PBH in the light of Gaia DR3 data
Juan Garcia-Bellido, Michael Hawkins
The recent astrometric data of hundreds of millions of stars from Gaia DR3 has allowed a precise determination of the Milky Way rotation curve up to ~kpc. The data suggests a r…
Evidence for microlensing by primordial black holes in quasar broad emission lines
M. R. S. Hawkins
With the detection of black hole mergers by the LIGO gravitational wave telescope, there has been increasing interest in the possibility that dark matter may be in the form of sola…
Observational Evidence for Primordial Black Holes: A Positivist Perspective
Bernard Carr, Sebastien Clesse, Juan Garcia-Bellido +2
We review numerous arguments for primordial black holes (PBHs) based on observational evidence from a variety of lensing, dynamical, accretion and gravitational-wave effects. This…
New evidence for a cosmological distribution of stellar mass primordial black holes
M. R. S. Hawkins
In this paper we show that to explain the observed distribution of amplitudes in a large sample of quasar lightcurves, a significant contribution from microlensing is required. Thi…