782 citations · 10.8k across the 130 of their papers we have counts for
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Probing sub-eV Dark Matter decays with PTOLEMY
Kyrylo Bondarenko, Alexey Boyarsky, Marco Nikolic +2
When the Dark Matter mass is below the eV-scale, its cosmological occupation number exceeds the ones of photons from the cosmic microwave background as well as of relic neutrinos.…
Magnetization of the intergalactic medium in the IllustrisTNG simulations: the importance of extended, outflow-driven bubbles
Andres Aramburo Garcia, Kyrylo Bondarenko, Alexey Boyarsky +3
We study the effects of galaxy formation physics on the magnetization of the intergalactic medium (IGM) using the IllustrisTNG simulations. We demonstrate that large-scale regions…
New Constraints on the Mass of Fermionic Dark Matter from Dwarf Spheroidal Galaxies
James Alvey, Nashwan Sabti, Victoria Tiki +7
Dwarf spheroidal galaxies are excellent systems to probe the nature of fermionic dark matter due to their high observed dark matter phase-space density. In this work, we review, re…
Improved BBN constraints on Heavy Neutral Leptons
Alexey Boyarsky, Maksym Ovchynnikov, Oleg Ruchayskiy +1
We constrain the lifetime of thermally produced Heavy Neutral Leptons (HNLs) from primordial nucleosynthesis. We show that even a small fraction of mesons present in the primordial…
Equilibration of the chiral asymmetry due to finite electron mass in electron-positron plasma
A. Boyarsky, V. Cheianov, O. Ruchayskiy +1
We calculate the rate of collisional decay of the axial charge in an ultrarelativistic electron-positron plasma, also known as the chirality flipping rate. We find that contrary to…
Evolution of the Primordial Axial Charge across Cosmic Times
A. Boyarsky, V. Cheianov, O. Ruchayskiy +1
We investigate collisional decay of the axial charge in an electron-photon plasma at temperatures 10 MeV - 100 GeV. We demonstrate that the decay rate of the axial charge is first…