51 citations · 258 across the 16 of their papers we have counts for
16 papers
A Radio Changing-state Jet in the Narrow-line Seyfert 1 Galaxy J1105+1452
Liming Dou, Zhining Chen, Jiahua Wu +9
We report the discovery of a radio-quiet to radio-loud transition in the narrow-line Seyfert 1 galaxy J1105+1452. The source has undergone a long-term evolution from a radio-quiet…
Spectral analysis of multivariate stationary Hawkes processes
Yifu Tang, Conor Kresin, Boris Baeumer +1
We establish the asymptotic validity of frequency-domain inference for stationary multivariate Hawkes processes under mild conditions, bridging the gap between theory and applicati…
Dynamical hotness, star formation quenching and growth of supermassive black holes
Hui Hong, Huiyuan Wang, H. J. Mo +8
A stellar system is dynamically hot when its kinetic energy is dominated by random motion represented by the velocity dispersion . We use MaNGA data to obtain in…
The evolution of merger fraction of galaxies at z < 0.6 depending on the star formation mode in the AKARI NEP Wide field
Eunbin Kim, Ho Seong Hwang, Woong-Seob Jeong +19
We study the galaxy merger fraction and its dependence on star formation mode in the5.4 square degrees of the North Ecliptic Pole-Wide field. We select 6352 galaxies withAKARI 9μm…
Environmental Effects on AGN activity via Extinction-free Mid-Infrared Census
Daryl Joe D. Santos, Tomotsugu Goto, Seong Jin Kim +20
How does the environment affect active galactic nucleus (AGN) activity? We investigated this question in an extinction-free way, by selecting 1120 infrared galaxies in the …
Investigative Study on Preprint Journal Club as an Effective Method of Teaching Latest Knowledge in Astronomy
Daryl Joe D. Santos, Tomotsugu Goto, Ting-Yi Lu +5
As recent advancements in physics and astronomy rapidly rewrite textbooks, there is a growing need in keeping abreast of the latest knowledge in these fields. Reading preprints is…
An Active Galactic Nucleus Recognition Model based on Deep Neural Network
Bo Han Chen, Tomotsugu Goto, Seong Jin Kim +21
To understand the cosmic accretion history of supermassive black holes, separating the radiation from active galactic nuclei (AGNs) and star-forming galaxies (SFGs) is critical. Ho…
Photometric Redshifts in the North Ecliptic Pole Wide Field based on a Deep Optical Survey with Hyper Suprime-Cam
Simon C. -C. Ho, Tomotsugu Goto, Nagisa Oi +13
The space infrared telescope has performed near- to mid-infrared (MIR) observations on the North Ecliptic Pole Wide (NEPW) field (5.4 deg) for about one year. t…
Identification of AKARI infrared sources by Deep HSC Optical Survey: Construction of New Band-Merged Catalogue in the NEP-Wide field
Seong Jin Kim, Nagisa Oi, Tomotsugu Goto +21
The north ecliptic pole (NEP) field is a natural deep field location for many satellite observations. It has been targeted manytimes since it was surveyed by the AKARI space telesc…
No redshift evolution of non-repeating fast radio-burst rates
Tetsuya Hashimoto, Tomotsugu Goto, Alvina Y. L. On +6
Fast radio bursts (FRBs) are millisecond transients of unknown origin(s) occurring at cosmological distances. Here we, for the first time, show time-integrated-luminosity functions…
Fast radio bursts to be detected with the Square Kilometre Array
Tetsuya Hashimoto, Tomotsugu Goto, Alvina Y. L. On +6
Fast radio bursts (FRBs) are mysterious extragalactic radio signals. Revealing their origin is one of the central foci in modern astronomy. Previous studies suggest that occurrence…
Far-infrared star-formation rates of six GRB host galaxies with ALMA
Tiger Yu-Yang Hsiao, Tetsuya Hashimoto, Jia-Yuan Chang +7
Gamma-Ray Bursts (GRBs) can be a promising tracer of cosmic star-formation rate history (CSFRH). In order to reveal the CSFRH using GRBs, it is important to understand whether they…
Search for Optically Dark Infrared Galaxies without Counterparts of Subaru Hyper Suprime-Cam in the AKARI North Ecliptic Pole Wide Survey Field
Yoshiki Toba, Tomotsugu Goto, Nagisa Oi +25
We present the physical properties of AKARI sources without optical counterparts in optical images from the Hyper Suprime-Cam (HSC) on the Subaru telescope. Using the AKARI infrare…
Luminosity-duration relations and luminosity functions of repeating and non-repeating fast radio bursts
Tetsuya Hashimoto, Tomotsugu Goto, Ting-Wen Wang +5
Fast radio bursts (FRBs) are mysterious radio bursts with a time scale of approximately milliseconds. Two populations of FRB, namely repeating and non-repeating FRBs, are observati…
Subaru medium-resolution spectra of a QSO at z=6.62: Three reionization tests
Ting-Yi Lu, Tomotsugu Goto, Ji-Jia Tang +9
Investigating the Gunn-Peterson trough of high redshift quasars (QSOs) is a powerful way to reveal the cosmic reionization. As one of such attempts, we perform a series of analyses…
Luminosity-duration relation of fast radio bursts
Tetsuya Hashimoto, Tomotsugu Goto, Ting-Wen Wang +3
Nature of dark energy remains unknown. Especially, to constrain the time variability of the dark-energy, a new, standardisable candle that can reach more distant Universe has been…