337 citations · 1.6k across the 31 of their papers we have counts for
7 papers · 1 filter
γ-Ray and ultra-high energy neutrino background suppression due to solar radiation
Shyam Balaji
The Sun emits copious amounts of photons and neutrinos in an approximately spatially isotropic distribution. Diffuse -rays and ultra-high energy (UHE) neutrinos from extragalact…
Improved stellar limits on a light CP-even scalar
Shyam Balaji, P. S. Bhupal Dev, Joseph Silk +1
We derive improved stellar luminosity limits on a generic light CP-even scalar field mixing with the Standard Model (SM) Higgs boson from the supernova SN1987A, the Sun, red gi…
Cosmological parameters from Planck data in SU(2), their local CDM values, and the modified photon Boltzmann equation
Ralf Hofmann, Janning Meinert, Shyam Sunder Balaji
A review of the spatially flat cosmological model SU(2), minimally induced by the postulate that the Cosmic Microwave Background (CMB) is subject to an SU(2) rather tha…
Observing nulling of primordial correlations via the 21 cm signal
Shyam Balaji, H. V. Ragavendra, Shiv K. Sethi +2
The 21cm line emitted by neutral hydrogen (HI) during the Dark Ages carries imprints of pristine primordial correlations. In models of inflation driven by a single, canonical scala…
Induced gravitational waves from slow-roll inflation after an enhancing phase
Shyam Balaji, Guillem Domenech, Joseph Silk
The primordial spectrum of fluctuations may present a large peak as a result of enhancing features during inflation. This may include, but is not limited to, bumps in the inflaton'…
Radio sky reveals primordial electron-proton interactions
Shyam Balaji, Maura E. Ramirez-Quezada, Celine Boehm
For several decades, astronomers have measured the electromagnetic emission in the universe from the lowest to the highest energies with incredible precision. The lowest end of the…
Induced gravitational waves from the cosmic coincidence
Shyam Balaji, Joseph Silk, Yi-Peng Wu
The induced gravitational wave (GW) background from enhanced primordial scalar perturbations is one of the most promising observational consequences of primordial black hole (PBH)…