Fractional Dark Matter decay: cosmological imprints and observational constraints
If a fraction f dcdm of the Dark Matter decays into invisible and massless particles (so-called"
dark radiation") with the decay rate (or inverse lifetime) Γ dcdm, such decay will leave …
dark radiation") with the decay rate (or inverse lifetime) Γ dcdm, such decay will leave …
21-cm observations and warm dark matter models
A Boyarsky, D Iakubovskyi, O Ruchayskiy… - Physical Review D, 2019 - APS
Observations of the redshifted 21-cm signal (in absorption or emission) allow us to peek into
the epoch of the “Dark Ages” and the onset of reionization. These data can provide a novel …
the epoch of the “Dark Ages” and the onset of reionization. These data can provide a novel …
[HTML][HTML] Bounds on sterile neutrino lifetime and mixing angle with active neutrinos by global 21 cm signal
PK Natwariya, AC Nayak - Physics Letters B, 2022 - Elsevier
Sterile neutrinos can be a possible candidate for dark matter. Sterile neutrinos are
radiatively unstable and can inject photon energy into the intergalactic medium (IGM). The …
radiatively unstable and can inject photon energy into the intergalactic medium (IGM). The …
Can EDGES observation favour any dark matter model?
A Rudakovskyi, D Savchenko… - Monthly Notices of the …, 2020 - academic.oup.com
The recent detection of the 21-cm absorption signal by the EDGES collaboration has been
widely used to constrain the basic properties of dark matter particles. However, extracting …
widely used to constrain the basic properties of dark matter particles. However, extracting …