7 citations · 8 across the 3 of their papers we have counts for
10 papers
Supermassive gravitinos, dark matter, leptogenesis and flat direction baryogenesis
Rouzbeh Allahverdi, Steen Hannestad, Asko Jokinen +2
In general the gravitino mass and/or the soft supersymmetry breaking masses in the observable sector can be much larger than the TeV scale. Depending on the relation between the ma…
Neutrino physics from cosmology
Steen Hannestad
Cosmological observations have in the past few years become an increasingly powerful method for determining parameters within the neutrino sector, such as the presence of sterile s…
A new map of neutrino cosmology - revised bounds on the number of neutrino species and the cosmological lepton asymmetry from WMAP data
Steen Hannestad
The paper has been withdrawn
Recent Progress in Neutrino Astrophysics
Steen Hannestad
Recent progress in neutrino physics has been rapid, to a large extent thanks to observations of neutrinos produced in astrophysical environments. Here, we review the current standi…
On the chaoticity of active-sterile neutrino oscillations in the early universe
Poul-Erik N. Braad, Steen Hannestad
We have investigated the evolution of the neutrino asymmetry in active-sterile neutrino oscillations in the early universe. We find that there are large regions of parameter space…
Massive warm dark matter
Steen Hannestad
Many independent high resolution simulations have indicated that the standard collisionless cold dark matter model does not reproduce the structure of observed present day galaxies…