6 citations · 6 across the 6 of their papers we have counts for
7 papers
Low-Scale See-Saw Mechanism and the Majorana Nature of Heavy Neutrinos
Takuya Okawa, S. T. Petcov
We investigate the possibility to determine the Majorana nature of the heavy Majorana neutrinos present in the low-scale type I seesaw mechanism of neutrino mass generation in expe…
Reappraisal of the Constraints on Heavy Axion-like Particles from Gamma-Ray Bursts
Christopher V. Cappiello, Saurav Das, P. S. Bhupal Dev +2
We reassess existing limits and derive new constraints on heavy axion-like particle (ALP) coupling to photons using gamma-ray bursts (GRBs). ALPs can be produced in the hot dense f…
Probing Heavy Axion-like Particles from Massive Stars with X-rays and Gamma Rays
James H. Buckley, P. S. Bhupal Dev, Francesc Ferrer +1
The hot interiors of massive stars in the later stages of their evolution provide an ideal place for the production of heavy axion-like particles (ALPs) with mass up to O(100 keV)…
The Affleck-Dine Curvaton
Aurora Ireland, Gordan Krnjaic, Takuya Okawa
The Standard Model of particle physics does not explain the origin of the universe's baryon asymmetry or its primordial fluctuations. The Affleck-Dine mechanism is a well-motivated…
Old neutron stars as a new probe of relic neutrinos and sterile neutrino dark matter
Saurav Das, P. S. Bhupal Dev, Takuya Okawa +1
We study the kinetic cooling (heating) of old neutron stars due to coherent scattering with relic neutrinos (sterile neutrino dark matter) via Standard Model neutral-current intera…
A Model for Pair Production Limit Cycles in Pulsar Magnetospheres
Takuya Okawa, Alexander Y. Chen
It was recently proposed that the electric field oscillation as a result of self-consistent pair production may be the source of coherent radio emission from pulsars. Dir…
On the Galactic radio signal from stimulated decay of axion dark matter
P. S. Bhupal Dev, Francesc Ferrer, Takuya Okawa
We study the full-sky distribution of the radio emission from the stimulated decay of axions which are assumed to compose the dark matter in the Galaxy. Besides the constant extrag…