96 citations · 329 across the 11 of their papers we have counts for
12 papers · 1 filter
Nonlinear corrections to the cosmological matter power spectrum and scale-dependent galaxy bias: implications for parameter estimation
Jan Hamann, Steen Hannestad, Alessandro Melchiorri +1
We explore and compare the performances of two nonlinear correction and scale-dependent biasing models for the extraction of cosmological information from galaxy power spectrum dat…
Ultra-high energy Neutrinos from Centaurus A and the Auger hot spot
Alessandro Cuoco, Steen Hannestad
The Pierre Auger collaboration has reported a correlation between Ultra-High Energy Cosmic Rays (UHECR) and nearby Active Galactic Nuclei (AGNs) within 75 Mpc. Two of these events…
Angular Signatures of Annihilating Dark Matter in the Cosmic Gamma-Ray Background
Alessandro Cuoco, Jacob Brandbyge, Steen Hannestad +2
The extragalactic cosmic gamma-ray background (CGB) is an interesting channel to look for signatures of dark matter annihilation. In particular, besides the imprint in the energy s…
Observational bounds on the cosmic radiation density
Jan Hamann, Steen Hannestad, Georg G. Raffelt +1
We consider the inference of the cosmic radiation density, traditionally parameterised as the effective number of neutrino species N_eff, from precision cosmological data. Paying p…
The Velocity Field of the Local Universe from Measurements of Type Ia Supernovae
Troels Haugboelle, Steen Hannestad, Bjarne Thomsen +3
We present a measurement of the velocity flow of the local universe relative to the CMB rest frame, based on the Jha, Riess & Kirshner (2007) sample of 133 low redshift type Ia sup…
How robust are inflation model and dark matter constraints from cosmological data?
Jan Hamann, Steen Hannestad, Martin S. Sloth +1
High-precision data from observation of the cosmic microwave background and the large scale structure of the universe provide very tight constraints on the effective parameters tha…