This research paper investigates the potential of using high-energy neutrinos to study primordial black holes (PBHs) and the memory burden effect. PBHs are hypothetical objects formed in the early universe, and their existence could have profound implications for our understanding of dark matter and cosmology.
Research Objective:
The study aims to constrain the parameter space of PBHs and the memory burden effect by analyzing the expected flux of high-energy neutrinos emitted during their evaporation.
Methodology:
The researchers calculate the neutrino flux from a population of memory-burdened PBHs, considering both galactic and extragalactic contributions. They compare their predictions with current and projected observations from high-energy neutrino telescopes like IceCube, IceCube-Gen2, and GRAND. A background-agnostic likelihood analysis is employed to derive conservative limits on the PBH mass and the memory burden parameter.
Key Findings:
Main Conclusions:
High-energy neutrinos offer a powerful and complementary probe for studying the memory burden effect and constraining the properties of light PBHs. Future neutrino telescopes hold significant potential for further tightening these constraints and potentially discovering evidence for PBHs.
Significance:
This research highlights the importance of multi-messenger astronomy, combining observations from different cosmic messengers like neutrinos and gamma rays, to gain a comprehensive understanding of astrophysical phenomena and fundamental physics.
Limitations and Future Research:
The study employs a conservative statistical analysis and does not consider the angular distribution of the neutrino flux. Future research incorporating these aspects could further strengthen the constraints. Additionally, exploring the impact of different dark matter halo profiles and PBH mass functions would provide a more comprehensive picture.
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by Marco Chiane... kl. arxiv.org 10-11-2024
https://arxiv.org/pdf/2410.07604.pdfDybere Forespørgsler