95 citations · 202 across the 8 of their papers we have counts for
8 papers
Is the NANOGrav detection evidence of resonant particle creation during inflation?
M. R. Gangopadhyay, V. V. Godithi, K. Ichiki +5
We show that the recently reported cosmic gravitational wave background by the NANOGrav 15-year collaboration may be the result of resonant particle creation during inflation. For…
Relative contributions of the weak, main and fission-recycling r-process
S. Shibagaki, T. Kajino, G. J. Mathews +3
There has been a persistent conundrum in attempts to model the nucleosynthesis of heavy elements by rapid neutron capture (the -process). Although the location of the abundance…
Constraints on Pre-inflation Fluctuations in a Nearly Flat Open ΛCDM Cosmology
G. J. Mathews, I. -S. Suh, N. Q. Lan +1
We analyze constraints on parameters characterizing the pre-inflating universe in an open inflation model with a present slightly open CDM universe. We employ an analytic model…
Reanalysis of the (J = 5) state at 592 keV in 180Ta and its role in the neutrino-process nucleosynthesis of 180Ta in supernovae
T. Hayakawa, P. Mohr, T. Kajino +2
We analyze the production and freeze-out of the isomer 180Tam in the neutrino-process. We consider the influence of a possible low-lying intermediate (J = 5) state at 592 keV using…
Neutrino Mass Bounds from Neutrinoless Double Beta Decays and Large Scale Structures
Yong-Yeon Keum, Kiyotomo Ichiki, Taka Kajino
We investigate the way how the total mass sum of neutrinos can be constrained from the neutrinoless double beta decay and cosmological probes with cosmic microwave background (WMAP…
Supernova Neutrino-Effects on R-Process Nucleosynthesis in Black Hole Formation
T. Sasaqui, T. Kajino, A. B. Balantekin
Stars with a wide range of masses provide a variety of production sites for intermediate-to-heavy mass elements. Very massive stars with mass culminate their evo…