4 code implementations • 15 Nov 2021 • Alex Cole, Benjamin Kurt Miller, Samuel J. Witte, Maxwell X. Cai, Meiert W. Grootes, Francesco Nattino, Christoph Weniger
Sampling-based inference techniques are central to modern cosmological data analysis; these methods, however, scale poorly with dimensionality and typically require approximate or intractable likelihoods.
1 code implementation • 1 Feb 2021 • Victor Munoz, Volodymyr Takhistov, Samuel J. Witte, George M. Fuller
Collapsing supermassive stars ($M \gtrsim 3 \times 10^4 M_{\odot}$) at high redshifts can naturally provide seeds and explain the origin of the supermassive black holes observed in the centers of nearly all galaxies.
High Energy Astrophysical Phenomena High Energy Physics - Experiment High Energy Physics - Phenomenology
2 code implementations • 12 Nov 2019 • Samuel D. McDermott, Samuel J. Witte
Light dark photons are subject to various plasma effects, such as Debye screening and resonant oscillations, which can lead to a more complex cosmological evolution than is experienced by conventional cold dark matter candidates.
High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics
