80 citations · 251 across the 20 of their papers we have counts for
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Anisotropies in the PTA gravitational wave background: what can they teach us about supermassive black hole binaries?
Matias Zaldarriaga, Gabriela Sato-Polito
The gravitational wave background detected by pulsar timing arrays is sourced by a finite population of supermassive black hole binaries, and is therefore anisotropic. We ask what…
Summary statistic for pulsar timing arrays
Gabriela Sato-Polito, Matias Zaldarriaga, Barak Zackay
The timing residuals produced by gravitational-wave signals can be described as an incoherent (pulsar term) contribution and a coherent (Earth term) map on the sky, which PTAs meas…
Evolution of SMBHs in light of PTA measurements: implications for growth by mergers and accretion
Gabriela Sato-Polito, Matias Zaldarriaga, Eliot Quataert
We study the growth of supermassive black holes accounting for both accretion and mergers. The former is informed by observations of the quasar luminosity function (QLF) and the la…
The distribution of the gravitational-wave background from supermassive black holes
Gabriela Sato-Polito, Matias Zaldarriaga
The recent detection of gravitational waves (GWs) by pulsar timing array (PTA) collaborations spurred a variety of questions regarding the origin of the signal and the properties o…
Unlocking New Physics with Joint Power Spectrum and Voxel Intensity Distribution Forecasts in Line-Intensity Mapping
Vivian I. Sabla, José Luis Bernal, Gabriela Sato-Polito +1
The power spectrum and voxel intensity distribution (VID) are two summary statistics that can be applied to condense the information encoded in line-intensity maps. The information…
Where are NANOGrav's big black holes?
Gabriela Sato-Polito, Matias Zaldarriaga, Eliot Quataert
Multiple pulsar timing array (PTA) collaborations have recently reported the first detection of gravitational waves (GWs) of nanohertz frequencies. The signal is expected to be pri…
Linear polarization of the stochastic gravitational-wave background with pulsar timing arrays
Neha Anil Kumar, Mesut Çalışkan, Gabriela Sato-Polito +2
Pulsar-timing collaborations have recently reported evidence for the detection of an isotropic stochastic gravitational-wave background consistent with one sourced by a population…
Exploring the spectrum of stochastic gravitational-wave anisotropies with pulsar timing arrays
Gabriela Sato-Polito, Marc Kamionkowski
Anisotropies in the nanohertz gravitational-wave background are a compelling next target for pulsar timing arrays (PTAs). Measurements or informative upper limits to the anisotropi…
A multi-tracer empirically-driven approach to line-intensity mapping lightcones
Gabriela Sato-Polito, Nickolas Kokron, José Luis Bernal
Line-intensity mapping (LIM) is an emerging technique to probe the large-scale structure of the Universe. By targeting the integrated intensity of specific spectral lines, it captu…
Seeking dark matter with -ray attenuation
José Luis Bernal, Andrea Caputo, Gabriela Sato-Polito +2
The flux of high-energy astrophysical rays is attenuated by the production of electron-positron pairs from scattering off of extragalactic background light (EBL). We use the mo…
Primordial trispectrum from kSZ tomography
Neha Anil Kumar, Gabriela Sato-Polito, Marc Kamionkowski +1
The kinetic Sunyaev Zel'dovich effect is a secondary CMB temperature anisotropy that provides a powerful probe of the radial-velocity field of matter distributed across the Univers…
The cosmic optical background excess, dark matter, and line-intensity mapping
José Luis Bernal, Gabriela Sato-Polito, Marc Kamionkowski
Recent studies using New Horizons LORRI images have returned the most precise measurement of the cosmic optical background to date, yielding a flux that exceeds that expected from…
Analytical covariance between voxel intensity distributions and line-intensity mapping power spectra
Gabriela Sato-Polito, José Luis Bernal
The power spectrum and the voxel intensity distribution (VID) are two of the main proposed summary statistics to study line-intensity maps. We reformulate the derivation of the VID…
Pulsar-timing measurement of the circular polarization of the stochastic gravitational-wave background
Gabriela Sato-Polito, Marc Kamionkowski
Pulsar-timing arrays (PTAs) are in the near future expected to detect a stochastic gravitational-wave background (SGWB) produced by a population of inspiralling super-massive black…
Kinetic Sunyaev-Zel'dovich tomography with line-intensity mapping
Gabriela Sato-Polito, José Luis Bernal, Kimberly K. Boddy +1
The kinetic Sunyaev-Zel'dovich (kSZ) effect is a secondary cosmic microwave background (CMB) anisotropy induced by the scattering of CMB photons off intervening electrons. Through…
Antisymmetric cross-correlation of line-intensity maps as a probe of reionization
Gabriela Sato-Polito, José Luis Bernal, Ely D. Kovetz +1
We present a new estimator for the cross-correlation signal between line intensity maps to probe the Epoch of Reionization. The proposed estimator is the hitherto neglected antisym…
Constraints on the primordial curvature power spectrum from primordial black holes
Gabriela Sato-Polito, Ely D. Kovetz, Marc Kamionkowski
Large-amplitude density perturbations may have collapsed during the radiation dominated epoch of the Universe to form primordial black holes (PBHs). There are several constraints t…