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Bounds on self-interacting fermion dark matter from observations of old neutron stars
Joseph Bramante, Keita Fukushima, Jason Kumar +1
The existence of old neutron stars deeply constrains self-interacting fermion dark matter, which can form star-killing black holes. We quantify this constraint on dark matter-nucle…
Cosmic Variance of the Spectral Index from Mode Coupling
Joseph Bramante, Jason Kumar, Elliot Nelson +1
We demonstrate that local, scale-dependent non-Gaussianity can generate cosmic variance uncertainty in the observed spectral index of primordial curvature perturbations. In a unive…
Constraints on Bosonic Dark Matter From Observations of Old Neutron Stars
Joseph Bramante, Keita Fukushima, Jason Kumar
Baryon interactions with bosonic dark matter are constrained by the potential for dark matter-rich neutron stars to collapse into black holes. We consider the effect of dark matter…