1.5k citations · 12.2k across the 191 of their papers we have counts for
51 papers · 1 filter
WarmSPy: a numerical study of cosmological perturbations in warm inflation
Gabriele Montefalcone, Vikas Aragam, Luca Visinelli +1
We present WarmSPy, a numerical code in Python designed to solve for the perturbations' equations in warm inflation models and compute the corresponding scalar power spectrum at CM…
Supermassive Dark Star candidates seen by JWST?
Cosmin Ilie, Jillian Paulin, Katherine Freese
The first generation of stars in the Universe is yet to be observed. There are two leading theories for those objects that mark the beginning of the cosmic dawn: hydrogen burning P…
Dark Matter and Gravity Waves from a Dark Big Bang
Katherine Freese, Martin Wolfgang Winkler
The Hot Big Bang is often considered as the origin of all matter and radiation in the Universe. Primordial nucleosynthesis (BBN) provides strong evidence that the early Universe co…
Have Pulsar Timing Arrays detected the Hot Big Bang? Gravitational Waves from Strong First Order Phase Transitions in the Early Universe
Katherine Freese, Martin Wolfgang Winkler
The origins of matter and radiation in the universe lie in a Hot Big Bang. We present a number of well-motivated cosmologies in which the Big Bang occurs through a strong first ord…
Updated neutrino mass constraints from galaxy clustering and CMB lensing-galaxy cross-correlation measurements
Isabelle Tanseri, Steffen Hagstotz, Sunny Vagnozzi +2
We revisit cosmological constraints on the sum of the neutrino masses from a combination of full-shape BOSS galaxy clustering [] data and measurements of the cross-cor…
Snowmass2021 Cosmic Frontier: Cosmic Microwave Background Measurements White Paper
Clarence L. Chang, Kevin M. Huffenberger, Bradford A. Benson +128
This is a solicited whitepaper for the Snowmass 2021 community planning exercise. The paper focuses on measurements and science with the Cosmic Microwave Background (CMB). The CMB…
Neutrino point source searches for dark matter spikes
Katherine Freese, Irina Galstyan, Pearl Sandick +1
Any dark matter spikes surrounding black holes in our Galaxy are sites of significant dark matter annihilation, leading to a potentially detectable neutrino signal. In this paper w…
New Projections for Dark Matter Searches with Paleo-Detectors
Sebastian Baum, Thomas D. P. Edwards, Katherine Freese +1
Paleo-detectors are a proposed experimental technique to search for dark matter (DM). In lieu of the conventional approach of operating a tonne-scale real-time detector to search f…
A Constraint on Primordial -Modes from the First Flight of the SPIDER Balloon-Borne Telescope
SPIDER Collaboration, P. A. R. Ade, M. Amiri +68
We present the first linear polarization measurements from the 2015 long-duration balloon flight of SPIDER, an experiment designed to map the polarization of the cosmic microwave b…
Chain Early Dark Energy: Solving the Hubble Tension and Explaining Today's Dark Energy
Katherine Freese, Martin Wolfgang Winkler
We propose a new model of Early Dark Energy (EDE) as a solution to the Hubble tension in cosmology, the apparent discrepancy between local measurements of the Hubble constant $H_0\…
Stability and pulsation of the first dark stars
Tanja Rindler-Daller, Katherine Freese, Richard H. D. Townsend +1
The first bright objects to form in the Universe might not have been "ordinary" fusion-powered stars, but "Dark Stars" (DSs) powered by the annihilation of dark matter (DM) in the…
Cornering (quasi) degenerate neutrinos with cosmology
Massimiliano Lattanzi, Martina Gerbino, Katherine Freese +2
In light of the improved sensitivities of cosmological observations, we examine the status of quasi-degenerate neutrino mass scenarios. Within the simplest extension of the standar…
The First Three Seconds: a Review of Possible Expansion Histories of the Early Universe
Rouzbeh Allahverdi, Mustafa A. Amin, Asher Berlin +23
It is commonly assumed that the energy density of the Universe was dominated by radiation between reheating after inflation and the onset of matter domination 54,000 years later. W…
Bounds on light sterile neutrino mass and mixing from cosmology and laboratory searches
Steffen Hagstotz, Pablo F. de Salas, Stefano Gariazzo +5
We provide a consistent framework to set limits on properties of light sterile neutrinos coupled to all three active neutrinos using a combination of the latest cosmological data a…
Paleo-detectors: Searching for Dark Matter with Ancient Minerals
Andrzej K. Drukier, Sebastian Baum, Katherine Freese +2
We explore paleo-detectors as an approach to the direct detection of Weakly Interacting Massive Particle (WIMP) dark matter radically different from conventional detectors. Instead…
The Simons Observatory: Science goals and forecasts
The Simons Observatory Collaboration, Peter Ade, James Aguirre +247
The Simons Observatory (SO) is a new cosmic microwave background experiment being built on Cerro Toco in Chile, due to begin observations in the early 2020s. We describe the scient…
Searching for Dark Matter with Paleo-Detectors
Sebastian Baum, Andrzej K. Drukier, Katherine Freese +2
A large experimental program is underway to extend the sensitivity of direct detection experiments, searching for interaction of Dark Matter with nuclei, down to the neutrino floor…
Dark Matter implications of DAMA/LIBRA-phase2 results
Sebastian Baum, Katherine Freese, Chris Kelso
Recently, the DAMA/LIBRA collaboration released updated results from their search for the annual modulation signal from Dark Matter (DM) scattering in the detector. Besides approxi…
Scale-dependent galaxy bias, CMB lensing-galaxy cross-correlation, and neutrino masses
Elena Giusarma, Sunny Vagnozzi, Shirley Ho +4
One of the most powerful cosmological datasets when it comes to constraining neutrino masses is represented by galaxy power spectrum measurements, . The constraining pow…
Constraints on the sum of the neutrino masses in dynamical dark energy models with are tighter than those obtained in CDM
Sunny Vagnozzi, Suhail Dhawan, Martina Gerbino +3
We explore cosmological constraints on the sum of the three active neutrino masses in the context of dynamical dark energy (DDE) models with equation of state (EoS) parametri…
Dilute and dense axion stars
Luca Visinelli, Sebastian Baum, Javier Redondo +2
Axion stars are hypothetical objects formed of axions, obtained as localized and coherently oscillating solutions to their classical equation of motion. Depending on the value of t…
Comment on "Strong Evidence for the Normal Neutrino Hierarchy"
T. Schwetz, K. Freese, M. Gerbino +5
In the preprint arxiv:1703.03425 "strong evidence" for the normal neutrino mass ordering is claimed. The authors obtain Bayesian odds of 42:1 in favour of the normal ordering. Thei…
Constraints on Primordial Black Holes with Extended Mass Functions
Florian Kuhnel, Katherine Freese
Constraints on primordial black holes in the range to are reevaluated for a general class of extended mass functions. Whereas previous work…
Status of Dark Matter in the Universe
Katherine Freese
Over the past few decades, a consensus picture has emerged in which roughly a quarter of the universe consists of dark matter. I begin with a review of the observational evidence f…