6 papers
Axion Perturbations: A General Analytical Treatment
Itamar J. Allali, Priyesh Chakraborty, JiJi Fan +1
Cosmological data provides us two key constraints on dark matter (DM): it must have a particular abundance, and it must have an adiabatic spectrum of density perturbations in the e…
Clustering of cosmic string loops within a Milky-way like halo
Itamar Allali, Mudit Jain, Shi Yan
Loops of cosmic string experience a recoil from anisotropic gravitational radiation, known as the rocket effect, which influences the extent to which they are captured by galaxies…
Cosmic ensions Indirectly Correlate with Reionization Optical Depth
Itamar J. Allali, Lingfeng Li, Praniti Singh +1
The reionization optical depth has interesting connections to existing cosmological anomalies. As first studied in the context of the Hubble tension in our previous…
Reionization and the Hubble Constant: Correlations in the Cosmic Microwave Background
Itamar J. Allali, Praniti Singh, JiJi Fan +1
Recently, the James Webb Space Telescope (JWST) has found early galaxies producing photons from more efficient ionization than previously assumed. This may suggest a reionization p…
Reduced Hubble Tension in Dark Radiation Models after DESI 2024
Itamar J. Allali, Alessio Notari, Fabrizio Rompineve
We investigate the presence of extra relativistic degrees of freedom in the early Universe, contributing to the effective number of neutrinos , as $ÎN_\text{eff}\equ…
Neutrino mass bounds from DESI 2024 are relaxed by Planck PR4 and cosmological supernovae
Itamar J. Allali, Alessio Notari
The recent DESI 2024 Baryon Acoustic Oscillations (BAO) measurements combined with the CMB data from the Planck 18 PR3 dataset and the Planck PR4+ACT DR6 lensing data, with a prior…