139 citations · 549 across the 9 of their papers we have counts for
5 papers · 1 filter
Boson Stars from Self-Interacting Dark Matter
Joshua Eby, Chris Kouvaris, Niklas Grønlund Nielsen +1
We study the possibility that self-interacting bosonic dark matter forms star-like objects. We study both the case of attractive and repulsive self-interactions, and we focus parti…
White Dwarf Critical Tests for Modified Gravity
Rajeev Kumar Jain, Chris Kouvaris, Niklas Grønlund Nielsen
Scalar-tensor theories of gravity can lead to modifications of the gravitational force inside astrophysical objects. We exhibit that compact stars such as white dwarfs provide a un…
Asymmetric Dark Matter Stars
Chris Kouvaris, Niklas Grønlund Nielsen
We study the possibility of asymmetric dark matter with self-interactions forming compact stable objects. We solve the Tolman-Oppenheimer-Volkoff equation and find the mass-radius…
Daily modulation and gravitational focusing in direct dark matter search experiments
Chris Kouvaris, Niklas Grønlund Nielsen
We study the effect of gravitational focusing of the earth on dark matter. We find that the effect can produce a detectable diurnal modulation in the dark matter signal for part of…
Inflation from Asymptotically Safe Theories
Niklas Grønlund Nielsen, Francesco Sannino, Ole Svendsen
We investigate models in which inflation is driven by an ultraviolet safe and interacting scalar sector stemming from a new class of nonsupersymmetric gauge field theories. These n…