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Signatures of primordial black hole dark matter

The nonbaryonic dark matter of the Universe is assumed to consist of new stable forms of matter. Their stability reflects symmetry of micro world and mechanisms of its symmetry breaking. In the early…
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The Large High Altitude Air Shower Observatory (LHAASO) Science Book (2021 Edition)

Since the science white paper of the Large High Altitude Air Shower Observatory (LHAASO) published on arXiv in 2019 [e-Print: 1905.02773 (astro-ph.HE)], LHAASO has completed the transition from a…
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On the classical description of the recombination of dark matter particles with a Coulomb-like interaction

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Clusters of Primordial Black Holes

The Primordial Black Holes (PBHs) are a well-established probe for new physics in the very early Universe. We discuss here the possibility of PBH agglomeration into clusters that may have several…
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May heavy neutrinos solve underground and cosmic-ray puzzles?

Primordial heavy neutrinos of the fourth generation might explain different astrophysical puzzles. The simplest fourth-neutrino scenario is consistent with known fourth-neutrino physics, cosmic ray…
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Electromagnetic probes of primordial black holes as dark matter.

The LIGO discoveries have rekindled suggestions that primordial black holes (BHs) may constitute part to all of the dark matter (DM) in the Universe. Such suggestions came from 1) the observed merger…
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Decaying Dark Atom constituents and cosmic positron excess

We present a scenario where dark matter is in the form of dark atoms that can accomodate the experimentally observed excess of positrons in PAMELA and AMS-02 while being compatible with the…
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Primordial black holes with mass 1016−1017 g and reionization of the Universe

Primordial black holes (PBHs) with mass 1016−1017 g almost escape constraints from observations so could essentially contribute to dark matter density. Hawking evaporation of such PBHs produces with…
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Gamma-ray evidence for dark matter clumps

We discuss the possibility of identification of point-like gamma-ray sources (PGS) with small-scale dark matter (DM) clumps in our Galaxy. Gamma rays are supposed to originate from annihilation of DM…
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Anti-helium flux as a signature for antimatter globular clusters in our Galaxy

The Alpha Magnetic Spectrometer experiment is shown to be sensitive to test the hypothesis on the existence of antimatter globular cluster in our Galaxy. The hypothesis follows from the analysis of…
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