Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Rogers, Keir"'
Autor:
McCarthy, Fiona, Pirvu, Dalila, Hill, J. Colin, Huang, Junwu, Johnson, Matthew C., Rogers, Keir K.
Dark photons that kinetically mix with the Standard Model photon give rise to new spectral anisotropies (patchy dark screening) in the cosmic microwave background (CMB) due to conversion of photons to dark photons within large-scale structure. We uti
Externí odkaz:
http://arxiv.org/abs/2406.02546
We calculate the abundance of UV-bright galaxies in the presence of ultralight axion (ULA) dark matter (DM), finding that axions suppress their formation with a non-trivial dependence on redshift and luminosity. We set limits on axion DM using both P
Externí odkaz:
http://arxiv.org/abs/2404.11071
Autor:
Rogers, Keir K., Poulin, Vivian
We find that combined Planck cosmic microwave background, baryon acoustic oscillations and supernovae data analyzed under $\Lambda$CDM are in 4.9$\sigma$ tension with eBOSS Ly$\alpha$ forest in inference of the linear matter power spectrum at wavenum
Externí odkaz:
http://arxiv.org/abs/2311.16377
Axion-like particles (ALPs) are a well-motivated dark matter candidate that solve some of the problems in the clustering of large scale structure in cosmology. ALPs are often described by a simplified quadratic potential to specify the dynamics of th
Externí odkaz:
http://arxiv.org/abs/2311.02052
The era of precision cosmology allows us to test the composition of the dark matter. Mixed ultralight or fuzzy dark matter (FDM) is a cosmological model with dark matter composed of a combination of particles of mass $m\leq 10^{-20}\;\mathrm{eV}$, wi
Externí odkaz:
http://arxiv.org/abs/2310.20000
Autor:
Rogers, Keir K., Hložek, Renée, Laguë, Alex, Ivanov, Mikhail M., Philcox, Oliver H. E., Cabass, Giovanni, Akitsu, Kazuyuki, Marsh, David J. E.
Publikováno v:
JCAP 06 (2023) 023
We search for ultra-light axions as dark matter (DM) and dark energy particle candidates, for axion masses $10^{-32}\,\mathrm{eV} \leq m_\mathrm{a} \leq 10^{-24}\,\mathrm{eV}$, by a joint analysis of cosmic microwave background (CMB) and galaxy clust
Externí odkaz:
http://arxiv.org/abs/2301.08361
Autor:
Givans, Jahmour J., Font-Ribera, Andreu, Slosar, Anže, Seeyave, Louise, Pedersen, Christian, Rogers, Keir K., Garny, Mathias, Blas, Diego, Iršič, Vid
Three-dimensional correlations of the Lyman-$\alpha$ (Ly$\alpha$) forest and cross correlations between the Ly$\alpha$ forest and quasars have been measured on large scales, allowing a precise measurement of the baryon acoustic oscillation (BAO) feat
Externí odkaz:
http://arxiv.org/abs/2205.00962
Autor:
Dvorkin, Cora, Hlozek, Renée, An, Rui, Boddy, Kimberly K., Cyr-Racine, Francis-Yan, Farren, Gerrit S., Gluscevic, Vera, Grin, Daniel, Marsh, David J. E., Meyers, Joel, Rogers, Keir K., Schutz, Katelin, Xu, Weishuang Linda
The nature of dark matter is one of the major puzzles of fundamental physics, integral to the understanding of our universe across almost every epoch. The search for dark matter takes place at different energy scales, and use data ranging from partic
Externí odkaz:
http://arxiv.org/abs/2203.07064
Publikováno v:
Phys. Rev. Lett. 128, 171301 (2022)
We set the strongest limits to-date on the velocity-independent dark matter (DM) - proton cross section $\sigma$ for DM masses $m = 10\,\mathrm{keV}$ to $100\,\mathrm{GeV}$, using large-scale structure traced by the Lyman-alpha forest: e.g., a 95% lo
Externí odkaz:
http://arxiv.org/abs/2111.10386
Gravitational weak lensing by dark matter halos leads to a measurable imprint in the shear correlation function of galaxies. Fuzzy dark matter (FDM), composed of ultralight axion-like particles of mass $m\sim 10^{-22}\text{ eV}$, suppresses the matte
Externí odkaz:
http://arxiv.org/abs/2111.01199