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Supermassive Primordial Black Holes From Inflation
Dan Hooper, Aurora Ireland, Gordan Krnjaic +1
There is controversy surrounding the origin and evolution of our universe's largest supermassive black holes (SMBHs). In this study, we consider the possibility that some of these…
FAST drift scan survey for HI intensity mapping: I. preliminary data analysis
Yichao Li, Yougang Wang, Furen Deng +15
This work presents the initial results of the drift-scan observation for the neutral hydrogen (HI) intensity mapping survey with the Five-hundred-meter Aperture Spherical radio Tel…
The Tianlai dish array low-z surveys forecasts
Olivier Perdereau, Réza Ansari, Albert Stebbins +23
We present the science case for surveys with the Tianlai dish array interferometer tuned to the frequency range. Starting from a realistic…
Smallest Remnants of Early Matter Domination
Gabriela Barenboim, Nikita Blinov, Albert Stebbins
The evolution of the universe prior to Big Bang Nucleosynthesis could have gone through a phase of early matter domination (EMD) which enhanced the growth of small-scale dark matte…
New Limits on Charged Dark Matter from Large-Scale Coherent Magnetic Fields
Albert Stebbins, Gordan Krnjaic
We study the interaction of an electrically charged component of the dark matter with a magnetized galactic interstellar medium (ISM) of (rotating) spiral galaxies. For the observe…
Inflation and Dark Energy from spectroscopy at
Simone Ferraro, Michael J. Wilson, Muntazir Abidi +140
The expansion of the Universe is understood to have accelerated during two epochs: in its very first moments during a period of Inflation and much more recently, at , when D…
Primordial Non-Gaussianity
P. Daniel Meerburg, Daniel Green, Muntazir Abidi +175
Our current understanding of the Universe is established through the pristine measurements of structure in the cosmic microwave background (CMB) and the distribution and shapes of…
Messengers from the Early Universe: Cosmic Neutrinos and Other Light Relics
Daniel Green, Mustafa A. Amin, Joel Meyers +136
The hot dense environment of the early universe is known to have produced large numbers of baryons, photons, and neutrinos. These extreme conditions may have also produced other lo…
Dark Matter Science in the Era of LSST
Keith Bechtol, Alex Drlica-Wagner, Kevork N. Abazajian +177
Astrophysical observations currently provide the only robust, empirical measurements of dark matter. In the coming decade, astrophysical observations will guide other experimental…
Inflation and Early Dark Energy with a Stage II Hydrogen Intensity Mapping Experiment
Cosmic Visions 21 cm Collaboration, Réza Ansari, Evan J. Arena +29
This white paper envisions a revolutionary post-DESI, post-LSST dark energy program based on intensity mapping of the redshifted 21cm emission line from neutral hydrogen at radio f…
Dark Energy Survey Year 1 Results: Cosmological Constraints from Cosmic Shear
M. A. Troxel, N. MacCrann, J. Zuntz +132
We use 26 million galaxies from the Dark Energy Survey (DES) Year 1 shape catalogs over 1321 deg of the sky to produce the most significant measurement of cosmic shear in a gal…
A Dark Energy Camera Search for an Optical Counterpart to the First Advanced LIGO Gravitational Wave Event GW150914
M. Soares-Santos, R. Kessler, E. Berger +112
We report initial results of a deep search for an optical counterpart to the gravitational wave event GW150914, the first trigger from the Advanced LIGO gravitational wave detector…
Parameterization of temperature and spectral distortions in future CMB experiments
Cyril Pitrou, Albert Stebbins
CMB spectral distortions are induced by Compton collisions with electrons. We review the various schemes to characterize the anisotropic CMB with a non-Planckian spectrum. We advoc…
Coaxing Cosmic 21cm Fluctuations from the Polarized Sky using m-mode Analysis
J. Richard Shaw, Kris Sigurdson, Michael Sitwell +2
In this paper we continue to develop the m-mode formalism, a technique for efficient and optimal analysis of wide-field transit radio telescopes, targeted at 21 cm cosmology. We ex…
All-Sky Interferometry with Spherical Harmonic Transit Telescopes
J. Richard Shaw, Kris Sigurdson, Ue-Li Pen +2
In this paper we describe the spherical harmonic transit telescope, a novel formalism for the analysis of transit radio telescopes. This all-sky approach bypasses the curved sky co…
Large Synoptic Survey Telescope: Dark Energy Science Collaboration
LSST Dark Energy Science Collaboration
This white paper describes the LSST Dark Energy Science Collaboration (DESC), whose goal is the study of dark energy and related topics in fundamental physics with data from the La…
Confirmation of the Copernican principle at Gpc radial scale and above from the kinetic Sunyaev Zel'dovich effect power spectrum
Pengjie Zhang, Albert Stebbins
The Copernican principle, a cornerstone of modern cosmology, remains largely unproven at Gpc radial scale and above. Here we will show that, violations of this type will inevitably…
Reducing Zero-point Systematics in Dark Energy Supernova Experiments
L. Faccioli, A. G. Kim, R. Miquel +17
We study the effect of filter zero-point uncertainties on future supernova dark energy missions. Fitting for calibration parameters using simultaneous analysis of all Type Ia super…
A ground-based 21cm Baryon acoustic oscillation survey
Hee-Jong Seo, Scott Dodelson, John Marriner +4
Baryon acoustic oscillations (BAO) provide a robust standard ruler with which to measure the acceleration of the Universe. The BAO feature has so far been detected in optical galax…
The Sloan Nearby Cluster Weak Lensing Survey
Jeffrey M. Kubo, James Annis, Frances Mei Hardin +10
We describe and present initial results of a weak lensing survey of nearby () galaxy clusters in the Sloan Digital Sky Survey (SDSS). In this first study, galaxy…
Observing the Evolution of the Universe
James Aguirre, Alexandre Amblard, Amjad Ashoorioon +172
How did the universe evolve? The fine angular scale (l>1000) temperature and polarization anisotropies in the CMB are a Rosetta stone for understanding the evolution of the univers…
The Origin of the Universe as Revealed Through the Polarization of the Cosmic Microwave Background
S. Dodelson, R. Easther, S. Hanany +61
Modern cosmology has sharpened questions posed for millennia about the origin of our cosmic habitat. The age-old questions have been transformed into two pressing issues primed for…