The Square Kilometer Array as a Cosmic Microwave Background Experiment

Kavli Affiliate: Thomas Crawford | First 5 Authors: David Zegeye, Thomas Crawford, Jens Chluba, Mathieu Remazeilles, Keith Grainge | Summary: Contemporary cosmic microwave background (CMB) experiments typically have observing bands covering the range 20 – 800 GHz. Certain science goals, including the detection of $mu$-type distortions to the CMB spectrum and the characterization of low-frequency […]


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Gravitational Production of Completely Dark Photons with Nonminimal Couplings to Gravity

Kavli Affiliate: Edward W. Kolb | First 5 Authors: Christian Capanelli, Leah Jenks, Edward W. Kolb, Evan McDonough, | Summary: Dark photons are a theorized massive spin-1 particle which can be produced via various mechanisms, including cosmological gravitational particle production (GPP) in the early universe. In this work, we extend previous results for GPP of […]


Continue.. Gravitational Production of Completely Dark Photons with Nonminimal Couplings to Gravity

Gravitational Production of Completely Dark Photons with Nonminimal Couplings to Gravity

Kavli Affiliate: Edward W. Kolb | First 5 Authors: Christian Capanelli, Leah Jenks, Edward W. Kolb, Evan McDonough, | Summary: Dark photons are a theorized massive spin-1 particle which can be produced via various mechanisms, including cosmological gravitational particle production (GPP) in the early universe. In this work, we extend previous results for GPP of […]


Continue.. Gravitational Production of Completely Dark Photons with Nonminimal Couplings to Gravity

Gravitational-wave dark siren cosmology systematics from galaxy weighting

Kavli Affiliate: Daniel E. Holz | First 5 Authors: Alexandra G. Hanselman, Aditya Vijaykumar, Maya Fishbach, Daniel E. Holz, | Summary: The discovery of GW170817 provided the first direct gravitational-wave measurement of the Hubble constant, $H_0$, demonstrating the potential power of standard-siren cosmology. The dark siren approach can be utilized for gravitational-wave sources in the […]


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On the contribution of dwarf galaxies to reionization of the Universe

Kavli Affiliate: Andrey Kravtsov | First 5 Authors: Zewei Wu, Andrey Kravtsov, , , | Summary: We present estimates of the ultraviolet (UV) and Lyman continuum flux density contributed by galaxies of luminosities from $M_{rm UV}approx -25$ to $M_{rm UV}=-4$ at redshifts $5leq zleq 10$ using a galaxy formation model that reproduces properties of local […]


Continue.. On the contribution of dwarf galaxies to reionization of the Universe

On the contribution of dwarf galaxies to reionization of the Universe

Kavli Affiliate: Andrey Kravtsov | First 5 Authors: Zewei Wu, Andrey Kravtsov, , , | Summary: We present estimates of the ultraviolet (UV) and Lyman continuum flux density contributed by galaxies of luminosities from $M_{rm UV}approx -25$ to $M_{rm UV}=-4$ at redshifts $5leq zleq 10$ using a galaxy formation model that reproduces properties of local […]


Continue.. On the contribution of dwarf galaxies to reionization of the Universe

On the contribution of dwarf galaxies to reionization of the Universe

Kavli Affiliate: Andrey Kravtsov | First 5 Authors: Zewei Wu, Andrey Kravtsov, , , | Summary: We present estimates of the ultraviolet (UV) and Lyman continuum flux density contributed by galaxies of luminosities from $M_{rm UV}approx -25$ to $M_{rm UV}=-4$ at redshifts $5leq zleq 10$ using a galaxy formation model that reproduces properties of local […]


Continue.. On the contribution of dwarf galaxies to reionization of the Universe

Simons Observatory: Pre-deployment Performance of a Large Aperture Telescope Optics Tube in the 90 and 150 GHz Spectral Bands

Kavli Affiliate: Jeffrey J. McMahon | First 5 Authors: Carlos E. Sierra, Kathleen Harrington, Shreya Sutariya, Thomas Alford, Anna M. Kofman | Summary: The Simons Observatory will map the temperature and polarization over half of the sky, at millimeter wavelengths in six spectral bands from the Atacama Desert in Chile. These data will provide new […]


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Effect of the Large Magellanic Cloud on the kinematics of Milky Way satellites and virial mass estimate

Kavli Affiliate: Andrey Kravtsov | First 5 Authors: Andrey Kravtsov, Sophia Winney, , , | Summary: We present a study illustrating the effects of the passage of a Large Magellanic Cloud (LMC) mass satellite on the distance and velocity distributions of satellites in $Lambda+$Cold Dark Matter simulations of Milky Way (MW) sized halos. In agreement […]


Continue.. Effect of the Large Magellanic Cloud on the kinematics of Milky Way satellites and virial mass estimate