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Primordial black holes: the asteroid mass window

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arxiv 2406.03114 v1 pith:F2MTQ2NL submitted 2024-06-05 astro-ph.CO

classification astro-ph.CO
keywords massasteroidblackwindowcaptureholespbhsprimordial
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abstract

Primordial black holes (PBHs) are an attractive dark matter candidate, particularly if they can explain the totality of it. At PBH masses below $\sim 10^{17}$g and above $\sim 10^{23}$g this possibility is excluded from the variety of arguments and with different confidence. The range in between, often referred to as the "asteroid mass window", currently remains unconstrained. The most promising, in our view, way to probe this mass range is to use stars as the PBH detectors. If a star captures even a single PBH it starts being accreted onto it and eventually gets destroyed -- converted into a sub-solar mass black hole. This process may have a variety of signatures form a mere star disappearance to supernova-type explosions of a new kind. The viability of this approach depends crucially on the probability of PBH capture by stars. In this chapter we summarize the existing capture mechanisms and discuss their implications for constraining the abundance of (or perhaps discovering) PBHs in the asteroid mass window.

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Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The swallowed spike: the formation of light primordial black hole structures around heavy seeds

    astro-ph.CO 2026-06 unverdicted novelty 7.0 of 10

    No torque mechanism studied supplies enough angular momentum for the innermost light-PBH shells around a heavy seed, so the spike core is swallowed and far less dense than a WIMP spike.

  2. Primordial black hole in Lorentz-violating theories: Insights from Bumblebee gravity

    gr-qc 2026-07 conditional novelty 6.0 of 10

    Bumblebee gravity enhances primordial black hole abundance through three mechanisms, but the model harbors a ghost instability and a tachyonic instability that make it cosmologically unviable.

  3. $\tt GrayHawk$: A public code for calculating the Gray Body Factors of massless fields around spherically symmetric Black Holes

    gr-qc 2025-02 conditional novelty 6.0 of 10

    A new public Mathematica tool, GrayHawk, computes gray-body factors for massless spin 0, 1/2, 1, and 2 fields around seven spherically symmetric, asymptotically flat black hole metrics.

  4. Connecting Gravity and Quantum Physics: Primordial Black Holes and Accelerated Evolution of the Universe

    gr-qc 2024-11 reject novelty 4.0 of 10

    The paper asserts a photon Bose-Einstein condensate model of primordial black holes and uses it to derive cosmic dark matter, dark energy, and baryogenesis, but the derivations rest on ad hoc assumptions and contradic...

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