Search Results - "Spergel, David N."

Ultra-light dark matter in ultra-faint dwarf galaxies by Calabrese, Erminia, Spergel, David N.

“…Cold Dark Matter (CDM) models struggle to match the observations at galactic scales. The tension can be reduced either by dramatic baryonic feedback effects or…”
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Limitations to the ‘basic’ HOD model and beyond by Hadzhiyska, Boryana, Bose, Sownak, Eisenstein, Daniel, Hernquist, Lars, Spergel, David N

“…ABSTRACT We use the IllustrisTNG cosmological, hydrodynamical simulations to test fundamental assumptions of the mass-based halo occupation distribution (HOD)…”
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SUPERMASSIVE BLACK HOLES FROM ULTRA-STRONGLY SELF-INTERACTING DARK MATTER by Pollack, Jason, Spergel, David N., Steinhardt, Paul J.

“…ABSTRACT We consider the cosmological consequences if a small fraction ( ) of the dark matter is ultra-strongly self-interacting, with an elastic…”
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Ingredients for 21 cm Intensity Mapping by Villaescusa-Navarro, Francisco, Genel, Shy, Castorina, Emanuele, Obuljen, Andrej, Spergel, David N., Hernquist, Lars, Nelson, Dylan, Carucci, Isabella P., Pillepich, Annalisa, Marinacci, Federico, Diemer, Benedikt, Vogelsberger, Mark, Weinberger, Rainer, Pakmor, Rüdiger

“…Current and upcoming radio telescopes will map the spatial distribution of cosmic neutral hydrogen (H i) through its 21 cm emission. In order to extract the…”
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THE WEAK LENSING SIGNAL AND THE CLUSTERING OF BOSS GALAXIES. II. ASTROPHYSICAL AND COSMOLOGICAL CONSTRAINTS by More, Surhud, Miyatake, Hironao, Mandelbaum, Rachel, Takada, Masahiro, Spergel, David. N., Brownstein, Joel R., Schneider, Donald P.

“…ABSTRACT We perform a joint analysis of the abundance, the clustering, and the galaxy-galaxy lensing signal of galaxies measured from Data Release 11 of the…”
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Evidence of Halo Assembly Bias in Massive Clusters by Miyatake, Hironao, More, Surhud, Takada, Masahiro, Spergel, David N, Mandelbaum, Rachel, Rykoff, Eli S, Rozo, Eduardo

“…We present significant evidence of halo assembly bias for SDSS redMaPPer galaxy clusters in the redshift range [0.1, 0.33]. By dividing the 8,648 clusters into…”
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DETECTION OF THE SPLASHBACK RADIUS AND HALO ASSEMBLY BIAS OF MASSIVE GALAXY CLUSTERS by More, Surhud, Miyatake, Hironao, Takada, Masahiro, Diemer, Benedikt, Kravtsov, Andrey V., Dalal, Neal K., More, Anupreeta, Murata, Ryoma, Mandelbaum, Rachel, Rozo, Eduardo, Rykoff, Eli S., Oguri, Masamune, Spergel, David N.

“…ABSTRACT We show that the projected number density profiles of Sloan Digital Sky Survey photometric galaxies around galaxy clusters display strong evidence for…”
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The kinetic Sunyaev-Zel'dovich signal from inhomogeneous reionization: a parameter space study by Mesinger, Andrei, McQuinn, Matthew, Spergel, David N.

“…Inhomogeneous reionization acts as a source of arcminute-scale anisotropies in the cosmic microwave background (CMB), the most important of which is the…”
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Teaching Neural Networks to Generate Fast Sunyaev–Zel’dovich Maps by Thiele, Leander, Villaescusa-Navarro, Francisco, Spergel, David N., Nelson, Dylan, Pillepich, Annalisa

“…Abstract The thermal Sunyaev–Zel’dovich (tSZ) and the kinematic Sunyaev–Zel’dovich (kSZ) effects trace the distribution of electron pressure and momentum in…”
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Kronos and Krios: Evidence for Accretion of a Massive, Rocky Planetary System in a Comoving Pair of Solar-type Stars by Oh, Semyeong, Price-Whelan, Adrian M., Brewer, John M., Hogg, David W., Spergel, David N., Myles, Justin

“…We report and discuss the discovery of a significant difference in the chemical abundances of a comoving pair of bright solar-type stars, HD 240430 and HD…”
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Statistical Properties of Paired Fixed Fields by Villaescusa-Navarro, Francisco, Naess, Sigurd, Genel, Shy, Pontzen, Andrew, Wandelt, Benjamin, Anderson, Lauren, Font-Ribera, Andreu, Battaglia, Nicholas, Spergel, David N.

“…The initial conditions of cosmological simulations are commonly drawn from a Gaussian ensemble. The limited number of modes inside simulations gives rise to…”
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Searching for oscillations in the primordial power spectrum. II. Constraints from Planck data by Meerburg, P. Daniel, Spergel, David N., Wandelt, Benjamin D.

“…In this second of two papers we apply our recently developed code to search for resonance features in the Planck CMB temperature data. We search both for…”
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Field-level Neural Network Emulator for Cosmological N-body Simulations by Jamieson, Drew, Li, Yin, de Oliveira, Renan Alves, Villaescusa-Navarro, Francisco, Ho, Shirley, Spergel, David N.

“…Abstract We build a field-level emulator for cosmic structure formation that is accurate in the nonlinear regime. Our emulator consists of two convolutional…”
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Where are the Luminous Red Galaxies (LRGs)? Using correlation measurements and lensing to relate LRGs to dark matter haloes by Hikage, Chiaki, Mandelbaum, Rachel, Takada, Masahiro, Spergel, David N.

“…Non-linear redshift-space distortions, the Finger-of-God (FoG) effect, can complicate the interpretation of the galaxy power spectrum. Here, we demonstrate the…”
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A direct measure of free electron gas via the kinematic Sunyaev–Zel'dovich effect in Fourier-space analysis by Sugiyama, Naonori S, Okumura, Teppei, Spergel, David N

“…Abstract We present the measurement of the kinematic Sunyaev–Zel'dovich (kSZ) effect in Fourier space, rather than in real space. We measure the…”
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Neutrino Mass Constraint from an Implicit Likelihood Analysis of BOSS Voids by Thiele, Leander, Massara, Elena, Pisani, Alice, Hahn, ChangHoon, Spergel, David N., Ho, Shirley, Wandelt, Benjamin

“…Abstract Cosmic voids identified in the spatial distribution of galaxies provide complementary information to two-point statistics. In particular, constraints…”
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THE WEAK LENSING SIGNAL AND THE CLUSTERING OF BOSS GALAXIES. I. MEASUREMENTS by Miyatake, Hironao, More, Surhud, Mandelbaum, Rachel, Takada, Masahiro, Spergel, David N., Kneib, Jean-Paul, Schneider, Donald P., Brinkmann, J., Brownstein, Joel R.

“…ABSTRACT A joint analysis of the clustering of galaxies and their weak gravitational lensing signal is well-suited to simultaneously constrain the galaxy-halo…”
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Improving Distances to Binary Millisecond Pulsars with Gaia by Moran, Abigail, Mingarelli, Chiara M. F., Bedell, Megan, Good, Deborah, Spergel, David N.

“…Abstract Pulsar distances are notoriously difficult to measure, and play an important role in many fundamental physics experiments, such as pulsar timing…”
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Detecting Solar System Analogs through Joint Radial Velocity/Astrometric Surveys by Yahalomi, Daniel A., Angus, Ruth, Spergel, David N., Foreman-Mackey, Daniel

“…Abstract Earth-mass exoplanets on year-long orbits and cool gas giants (CGG) on decade-long orbits lie at the edge of current detection limits. The Terra…”
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Evidence against Dark Matter Halos Surrounding the Globular Clusters MGC1 and NGC 2419 by Conroy, Charlie, Loeb, Abraham, Spergel, David N

“…The conjecture that the ancient globular clusters (GCs) formed at the center of their own dark matter (DM) halos was first proposed by Peebles in 1984 and has…”
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