67 citations · 355 across the 27 of their papers we have counts for
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Cosmological and astrophysical constraints on superconducting cosmic strings
Koichi Miyamoto, Kazunori Nakayama
We investigate the cosmological and astrophysical constraints on superconducting cosmic strings (SCSs). SCS loops emit strong bursts of electromagnetic waves, which might affect va…
Forecast constraints on cosmic strings from future CMB, pulsar timing and gravitational wave direct detection experiments
Sachiko Kuroyanagi, Koichi Miyamoto, Toyokazu Sekiguchi +2
We study future observational constraints on cosmic string parameters from various types of next-generation experiments: direct detection of gravitational waves (GWs), pulsar timin…
Non-Gaussian isocurvature perturbations in dark radiation
Etsuko Kawakami, Masahiro Kawasaki, Koichi Miyamoto +2
We study non-Gaussian properties of the isocurvature perturbations in the dark radiation, which consists of the active neutrinos and extra light species, if exist. We first derive…
Forecast constraints on cosmic string parameters from gravitational wave direct detection experiments
Sachiko Kuroyanagi, Koichi Miyamoto, Toyokazu Sekiguchi +2
Gravitational waves (GWs) are one of the key signatures of cosmic strings. If GWs from cosmic strings are detected in future experiments, not only their existence can be confirmed…