12 citations · 27 across the 8 of their papers we have counts for
8 papers
Directional Cluster Migration Driven by Escape-Rate Asymmetry in Multi-Compartment Granular Systems
Kai Kono, Hiroyuki Ebata, Shio Inagaki
Granular materials are inherently out-of-equilibrium systems due to energy dissipation through inelastic collisions and friction. When driven by mechanical agitation such as vibrat…
Photometric Observations and Period Analysis of an SU UMa-type Dwarf Nova, MASTER OT J004527.52+503213.8
Sena A. Matsui, Tsutomu T. Takeuchi, Kai T. Kono +1
MASTER OT J004527.52+503213.8 (hereafter MASTER J004527) is a dwarf nova discovered by the MASTER project in 2013. At 18:20 UTC on 24 October 2020, brightening of this object was r…
Galaxy Manifold: Characterizing and understanding galaxies with two parameters
Suchetha Cooray, Tsutomu T. Takeuchi, Daichi Kashino +3
We report the discovery of a two-dimensional Galaxy Manifold within the multi-dimensional luminosity space of local galaxies. The multi-dimensional luminosity space is constructed…
High Dimensional Statistical Analysis and its Application to ALMA Map of NGC 253
Tsutomu T. Takeuchi, Kazuyoshi Yata, Kento Egashira +6
In astronomy, if we denote the dimension of data as and the number of samples as , we often meet a case with . Traditionally, such a situation is regarded as ill-po…
An Empirical Estimation of the Galaxy Radio Number Counts model at 3~GHz and the Effect of Gravitational Lensing
K. T. Kono, T. T. Takeuchi
We analyzed the evolution of 3GHz luminosity function of radio selected galaxies through cosmic time, up to about 1 Gyr after Big Bang, with making use of the VLA-COSMOS3GHz large…
Constraining the luminosity function of active galactic nuclei through the reionization observations in the SKA era
Kai T. Kono, Taichi Takeuchi, Hiroyuki Tashiro +2
Ultraviolet (UV) and X-ray photons from active galactic nuclei (AGNs) can ionize hydrogen in the intergalactic medium (IGM). We solve radiative transfer around AGNs in high redshif…
A Study on the Baryon Acoustic Oscillation with Topological Data Analysis
Kai T. Kono, Tsutomu T. Takeuchi, Suchetha Cooray +2
(abridged) The scale of the acoustic oscillation of baryons at the baryon-photon decoupling is imprinted on the spatial distribution of galaxies in the Universe, known as the baryo…
Constructing a multivariate distribution function with a vine copula: toward multivariate luminosity and mass functions
Tsutomu T. Takeuchi, Kai T. Kono
The need for a method to construct multidimensional distribution function is increasing recently, in the era of huge multiwavelength surveys. We have proposed a systematic method t…