  In this paper, a cosmological model is considered, in which dark matter is
emitted by T-symmetric quasi-black holes distributed over galaxies. Low energy
photons and neutrinos are taken as candidates for dark matter particles. Photon
case can be closed due to the suppression of electromagnetic waves by
interstellar/intergalactic medium. For neutrinos, two scenarios are considered.
In the first, light neutrinos pair to bosonic quasiparticles that form massive
halos around galaxies. In the second, heavier sterile neutrinos form massive
halos without pairing. At the observables level, both scenarios turn out to be
equivalent to the standard LambdaCDM model. At the same time, the considered
model possesses additional sources -- quasi-black holes -- that can produce the
required number of neutrinos in addition to the Big Bang. This opens up
additional possibilities for cosmological constructions. The matching of the
model with early cosmology and ongoing neutrino experiments is discussed. In
addition, the possibility of solving general cosmological problems, including
horizon, flatness and cosmological constant problems, as well as Hubble
tension, within the framework of the considered model, is discussed.
