Search Results - "Philcox, Oliver H E"

Constraints on Single-Field Inflation from the BOSS Galaxy Survey by Cabass, Giovanni, Ivanov, Mikhail M., Philcox, Oliver H. E., Simonović, Marko, Zaldarriaga, Matias

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Disordered Heterogeneous Universe: Galaxy Distribution and Clustering across Length Scales by Philcox, Oliver H. E., Torquato, Salvatore

“…The studies of disordered heterogeneous media and galaxy cosmology share a common goal: analyzing the disordered distribution of particles and/or building…”
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Estimating covariance matrices for two- and three-point correlation function moments in Arbitrary Survey Geometries by Philcox, Oliver H E, Eisenstein, Daniel J

“…ABSTRACT We present configuration-space estimators for the auto- and cross-covariance of two- and three-point correlation functions (2PCF and 3PCF) in general…”
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Efficient computation of N -point correlation functions in D dimensions by Philcox, Oliver H E, Slepian, Zachary

“…We present efficient algorithms for computing the -point correlation functions (NPCFs) of random fields in arbitrary -dimensional homogeneous and isotropic…”
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Computing the small-scale galaxy power spectrum and bispectrum in configuration space by Philcox, Oliver H E, Eisenstein, Daniel J

“…ABSTRACT We present a new class of estimators for computing small-scale power spectra and bispectra in configuration space via weighted pair and triple counts,…”
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encore: an O (Ng2) estimator for galaxy N-point correlation functions by Philcox, Oliver H E, Slepian, Zachary, Hou, Jiamin, Warner, Craig, Cahn, Robert N, Eisenstein, Daniel J

“…ABSTRACT We present a new algorithm for efficiently computing the N-point correlation functions (NPCFs) of a 3D density field for arbitrary N. This can be…”
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The clustering of the SDSS-IV extended baryon oscillation spectroscopic survey DR16 luminous red galaxy and emission-line galaxy samples: cosmic distance and structure growth measurements using multiple tracers in configuration space by Wang, Yuting, Zhao, Gong-Bo, Zhao, Cheng, Philcox, Oliver H E, Alam, Shadab, Tamone, Amélie, de Mattia, Arnaud, Ross, Ashley J, Raichoor, Anand, Burtin, Etienne, Paviot, Romain, de la Torre, Sylvain, Percival, Will J, Dawson, Kyle S, Gil-Marín, Héctor, Bautista, Julian E, Hou, Jiamin, Koyama, Kazuya, Peacock, John A, Ruhlmann-Kleider, Vanina, Bourboux, Hélion du Mas des, Chuang, Chia-Hsun, Comparat, Johan, Escoffier, Stephanie, Kneib, Jean-Paul, Mueller, Eva-Maria, Newman, Jeffrey A, Rossi, Graziano, Shafieloo, Arman, Schneider, Donald P

“…ABSTRACT We perform a multitracer analysis using the complete Sloan Digital Sky Survey IV (SDSS-IV) extended Baryon Oscillation Spectroscopic Survey (eBOSS)…”
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Do the CMB Temperature Fluctuations Conserve Parity? by Philcox, Oliver H. E.

“…Observations of the cosmic microwave background (CMB) have cemented the notion that the large-scale Universe is both statistically homogeneous and isotropic…”
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A uniform spherical goat (problem): explicit solution for homologous collapse’s radial evolution in time by Slepian, Zachary, Philcox, Oliver H E

“…ABSTRACT The homologous collapse from rest of a uniform density sphere under its self gravity is a well-known toy model for the formation dynamics of…”
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Kepler’s Goat Herd: An exact solution to Kepler’s equation for elliptical orbits by Philcox, Oliver H E, Goodman, Jeremy, Slepian, Zachary

“…ABSTRACT A fundamental relation in celestial mechanics is Kepler’s equation, linking an orbit’s mean anomaly to its eccentric anomaly and eccentricity. Being…”
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A faster Fourier transform? Computing small-scale power spectra and bispectra for cosmological simulations in 𝒪(N2) time by Philcox, Oliver H E

“…ABSTRACT We present $\mathcal {O}(N^2)$ estimators for the small-scale power spectrum and bispectrum in cosmological simulations. In combination with…”
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Inferring Galactic Parameters from Chemical Abundances: A Multi-star Approach by Philcox, Oliver H. E., Rybizki, Jan

“…Constraining parameters such as the initial mass function high-mass slope and the frequency of Type Ia supernovae is of critical importance in the ongoing…”
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rascalc : a jackknife approach to estimating single- and multitracer galaxy covariance matrices by Philcox, Oliver H E, Eisenstein, Daniel J, O’Connell, Ross, Wiegand, Alexander

“…ABSTRACT To make use of clustering statistics from large cosmological surveys, accurate and precise covariance matrices are needed. We present a new code to…”
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The 3D Lyman-α forest power spectrum from eBOSS DR16 by de Belsunce, Roger, Philcox, Oliver H E, Iršič, Vid, McDonald, Patrick, Guy, Julien, Palanque-Delabrouille, Nathalie

“…ABSTRACT We measure the three-dimensional power spectrum (P3D) of the transmitted flux in the Lyman-$\alpha$ (Ly $\alpha$) forest using the complete extended…”
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Detection and removal of B-mode dust foregrounds with signatures of statistical anisotropy by Philcox, Oliver H E, Sherwin, Blake D, van Engelen, Alexander

“…Searches for inflationary gravitational wave signals in the cosmic microwave background (CMB) B-mode polarization are expected to reach unprecedented power…”
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Optimal Estimation of the Binned Mask-Free Power Spectrum, Bispectrum, and Trispectrum on the Full Sky: Scalar Edition by Philcox, Oliver H. E

“…We derive optimal estimators for the two-, three-, and four-point correlators of statistically isotropic scalar fields defined on the sphere, such as the…”
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Probing Parity-Violation with the Four-Point Correlation Function of BOSS Galaxies by Philcox, Oliver H. E

“…Parity-violating physics in the early Universe can leave detectable traces in late-time observables. Whilst vector- and tensor-type parity-violation can be…”
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Cosmology Without Window Functions: Cubic Estimators for the Galaxy Bispectrum by Philcox, Oliver H. E

“…When analyzing the galaxy bispectrum measured from spectroscopic surveys, it is imperative to account for the effects of non-uniform survey geometry…”
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Colliding Ghosts: Constraining Inflation with the Parity-Odd Galaxy Four-Point Function by Cabass, Giovanni, Ivanov, Mikhail M, Philcox, Oliver H. E

“…Could new physics break the mirror symmetry of the Universe? Utilizing recent measurements of the parity-odd four-point correlation function of BOSS galaxies,…”
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Determining the Hubble Constant without the Sound Horizon: Perspectives with Future Galaxy Surveys by Farren, Gerrit S, Philcox, Oliver H. E, Sherwin, Blake D

“…Physical Review D 105 (2022) $H_0$ constraints from galaxy surveys are sourced by the geometric properties of two standardisable rulers: the sound horizon…”
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