G objects and primordial black holes

Journal Article · 06 September 2023 · Physical Review. D.

DOI: https://doi.org/10.1103/physrevd.108.l061301 · OSTI ID:2255193

Flores, Marcos M.  ^[1]; Kusenko, Alexander  ^[2]; Ghez, Andrea M. ^[3]; Naoz, Smadar  ^[3]

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1. University of California, Los Angeles, CA (United States); University of California, Los Angeles, Los Angeles, California
2. University of California, Los Angeles, CA (United States); University of Tokyo, Chiba (Japan); European Organization for Nuclear Research (CERN), Geneva (Switzerland)
3. University of California, Los Angeles, CA (United States)

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_⊙, 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_⊙ black holes. Furthermore, 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.

• Research Organization: University of California, Los Angeles, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
• Grant/Contract Number: SC0009937
• OSTI ID: 2255193
• Journal Information: Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 6 Vol. 108; ISSN 2470-0010
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English