This research paper investigates the cosmological implications of embedding non-singular black holes within an expanding universe. The authors challenge the traditional notion of a static event horizon for black holes in a cosmological context, proposing instead the presence of a dynamic apparent horizon.
Bibliographic Information: M. Cadoni, M. Pitzalis, and A. P. Sanna, "Apparent horizons in cosmologically-embedded black holes," arXiv:2410.10459v1 (2024).
Research Objective: To derive explicit solutions for cosmologically-embedded non-singular black holes and analyze the evolution of their apparent horizons in relation to cosmological redshift and mass coupling.
Methodology: The authors employ Einstein's field equations within the framework of General Relativity, considering anisotropic fluid sources to construct exact solutions for cosmologically-embedded black holes. They focus on a class of non-singular black hole models characterized by a de Sitter core and asymptotic Schwarzschild behavior, including the Hayward and Fan & Wang models.
Key Findings:
Main Conclusions:
Significance: This research provides valuable insights into the interplay between black hole physics and cosmology, particularly in the context of non-singular black hole models. The findings have implications for understanding the evolution of black holes in an expanding universe and the potential observational signatures of cosmological coupling.
Limitations and Future Research: The study primarily focuses on a specific class of non-singular black hole models. Further research could explore the generality of these findings for other black hole solutions and investigate the potential observational consequences of the evolving apparent horizon.
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by Mariano Cado... at arxiv.org 10-15-2024
https://arxiv.org/pdf/2410.10459.pdfDeeper Inquiries