30 citations · 117 across the 11 of their papers we have counts for
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Constraints on ultra-low-frequency gravitational waves from an eccentric supermassive black hole binary
Tomonosuke Kikunaga, Shinnosuke Hisano, Hiroki Kumamoto +1
Milli-second pulsars with highly stable periods can be considered as very precise clocks and can be used for pulsar timing array (PTA) which attempts to detect nanoheltz gravitatio…
Flux density variability of 286 radio pulsars from a decade of monitoring
H. Kumamoto, S. Dai, S. Johnston +7
The Parkes telescope has been monitoring 286 radio pulsars approximately monthly since 2007 at an observing frequency of 1.4 GHz. The wide dispersion measure (DM) range of the puls…
Constraints on ultra-low-frequency gravitational waves with statistics of pulsar spin-down rates II: Mann-Whitney U test
H. Kumamoto, S. Hisano, K. Takahashi
We investigate gravitational waves with sub-nanoHz frequencies ( Hz Hz) from the spatial distribution of the spin-down rates of mil…
Discovery of Millisecond Pulsars in the Globular Cluster Omega Centauri
Shi Dai, Simon Johnston, Matthew Kerr +4
The globular cluster Omega Centauri is the most massive and luminous cluster in the Galaxy. The -ray source FL8Y J1326.74729 is coincident with the core of the cluster, leadi…
Constraints on ultra-low-frequency gravitational waves with statistics of pulsar spin-down rates
Hiroki Kumamoto, Yuya Imasato, Naoyuki Yonemaru +2
We probe ultra-low-frequency gravitational waves (GWs) with statistics of spin-down rates of milli-second pulsars (MSPs) by a method proposed in our prevous work (Yonemaru et al. 2…
Detailed study of detection method for ultra-low-frequency gravitational waves with pulsar spin-down rate statistics
Shinnosuke Hisano, Naoyuki Yonemaru, Hiroki Kumamoto +1
A new detection method for gravitational waves (GWs) with ultra-low frequencies (), which is much lower than the range of pulsar timing array…
Sensitivity of new detection method for ultra-low frequency gravitational waves with pulsar spin-down rate statistics
Naoyuki Yonemaru, Hiroki Kumamoto, Keitaro Takahashi +1
A new detection method for ultra-low frequency gravitational waves (GWs) with a frequency much lower than the observational range of pulsar timing arrays (PTAs) was suggested in Yo…