$G$ Objects and primordial black holes

Abstract

We suggest that "$G$ objects" recently discovered in the Galactic Center may be clouds of gas bound by the gravitational field of stellar-mass black holes produced in the interactions of sublunar primordial black holes with neutron stars. If dark matter is composed of primordial black holes with masses $(10^{-16}-10^{-10})M_{\odot }$, these black holes can be captured by neutron stars in the Galactic Center, where the dark matter density is high. After the capture, the neutron star is consumed by the black hole, resulting in a population of $(1-2)M_{\odot }$ black holes. These stellar-mass black holes, accompanied by gaseous atmospheres, can account for the observed properties of the $G$ objects, including their resilience to tidal disruption by the supermassive black hole in the Galactic Center while also producing emission consistent with inferred luminosities.

8 pages, 2 figures, Accepted into Phys. Rev. D

References in corpus (13)

• The mass distribution and gravitational potential of the Milky Way
• Primordial Black Holes as Dark Matter
• Gravitational Wave signatures of inflationary models from Primordial Black Hole Dark Matter
• The structure of the nuclear stellar cluster of the Milky Way
• Primordial seeds of supermassive black holes
• Primordial black holes from scalar field evolution in the early universe
• The Fate of Binaries in the Galactic Center: The Mundane and the Exotic
• Secular Evolution Of Binaries Near Massive Black Holes: Formation of compact binaries, merger/collision products and G2-like objects
• A population of dust-enshrouded objects orbiting the Galactic black hole
• The impact of mass segregation and star-formation on the rates of gravitational-wave sources from extreme mass ratio inspirals
• The Post-Periapse Evolution of Galactic Center Source G1: The second case of a resolved tidal interaction with a supermassive black hole
• Stellar Distributions Around a Supermassive Black Hole: Strong Segregation Regime Revisited
• Constraining the mass density of free-floating black holes using razor-thin lensing arcs