14 papers
Solar Constraints on Heavy Neutral Leptons with Mixing
Vedran Brdar, Samiur R. Mir, Xun-Jie Xu
The mixing of heavy neutral leptons (HNLs) with tau neutrinos remains largely unconstrained compared to their mixing with electron and muon neutrinos. In this work, we investigate…
Four, One, and None: Quantifying the Ultra-High-Energy Neutrino Anomaly Across ANITA-IV, KM3NeT, and IceCube
Dibya S. Chattopadhyay, Carlos A. Argüelles, Vedran Brdar
The four near-horizon neutrino-like events reported by ANITA-IV and the ultra-high-energy track-like event KM3-230213A observed by KM3NeT imply neutrino event rates that are in ten…
Prospects for Neutrino Observation and Mass Measurement from Binary Neutron Star Mergers
Vedran Brdar, Dibya S. Chattopadhyay, Samiur R. Mir +2
Over the next decade, diffuse supernova neutrino background (DSNB) events are expected in Hyper-Kamiokande. Another neutrino source that has received far less at…
Neutron Star Eclipses as Axion Laboratories
Vedran Brdar, Dibya S. Chattopadhyay
In light-shining-through-walls experiments, axions and axion-like particles (ALPs) are searched for by exposing an optically thick barrier to a laser beam. In a magnetic field, pho…
Ultra-High-Energy Tau Neutrinos as Probes of Lorentz Invariance
Vedran Brdar, Samiur R. Mir
Neutrino telescopes have detected astrophysical neutrinos with energies up to PeV. Several current and proposed experiments aim to observe neutrinos at even higher energ…
PT2GWFinder: A Package for Cosmological First-Order Phase Transitions and Gravitational Waves
Vedran Brdar, Marco Finetti, Marco Matteini +2
The detection of gravitational waves from binary black hole and neutron star mergers by ground-based interferometers, as well as the evidence for a gravitational wave background fr…