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Towards a measurement of the spectral runnings
Julian B. Muñoz, Ely D. Kovetz, Alvise Raccanelli +2
Single-field slow-roll inflation predicts a nearly scale-free power spectrum of perturbations, as observed at the scales accessible to current cosmological experiments. This spectr…
Gravitational wave astronomy with radio galaxy surveys
Alvise Raccanelli
In the next decade, new astrophysical instruments will deliver the first large-scale maps of gravitational waves and radio sources. Therefore, it is timely to investigate the possi…
Orbital eccentricities in primordial black holes binaries
Ilias Cholis, Ely D. Kovetz, Yacine Ali-Haïmoud +4
It was recently suggested that the merger of primordial black holes (PBHs) may provide a significant number of events in gravitational-wave observatories over the…
Cosmological Constraints with Clustering-Based Redshifts
Ely D. Kovetz, Alvise Raccanelli, Mubdi Rahman
We demonstrate that observations lacking reliable redshift information, such as photometric and radio continuum surveys, can produce robust measurements of cosmological parameters…
Determining the progenitors of merging black-hole binaries
Alvise Raccanelli, Ely D. Kovetz, Simeon Bird +2
We investigate a possible method for determining the progenitors of black hole (BH) mergers observed via their gravitational wave (GW) signal. We argue that measurements of the cro…
Curvature constraints from Large Scale Structure
Enea Di Dio, Francesco Montanari, Alvise Raccanelli +3
We modified the CLASS code in order to include relativistic galaxy number counts in spatially curved geometries; we present the formalism and study the effect of relativistic corre…
Cosmological tests of an axiverse-inspired quintessence field
Razieh Emami, Daniel Grin, Josef Pradler +2
Inspired by the string axiverse idea, it has been suggested that the recent transition from decelerated to accelerated cosmic expansion is driven by an axion-like quintessence fiel…
Violation of statistical isotropy and homogeneity in the 21-cm power spectrum
Maresuke Shiraishi, Julian B. Muñoz, Marc Kamionkowski +1
Most inflationary models predict primordial perturbations to be statistically isotropic and homogeneous. Cosmic microwave background (CMB) observations, however, indicate a possibl…
Did LIGO detect dark matter?
Simeon Bird, Ilias Cholis, Julian B. Muñoz +5
We consider the possibility that the black-hole (BH) binary detected by LIGO may be a signature of dark matter. Interestingly enough, there remains a window for masses $20\,M_\odot…
Doppler term in the galaxy two-point correlation function: wide-angle, velocity, Doppler lensing and cosmic acceleration effects
Alvise Raccanelli, Daniele Bertacca, Donghui Jeong +2
We study the parity-odd part (that we shall call Doppler term) of the linear galaxy two-point correlation function that arises from wide-angle, velocity, Doppler lensing and cosmic…