activity
20132022
most citedThe Size of the Narrow-Line Emitting Region in the Seyfert 1 Galaxy NGC 5548 from Emission-Line Variability

127 citations · 455 across the 12 of their papers we have counts for

collaborators

11 papers

astro-ph.GA2022★ 2 cited

ALMA [O III] and [C II] Detections of A1689-zD1 at

Yi Hang Valerie Wong, Poya Wang, Tetsuya Hashimoto +10

A1689-zD1 is one of the most distant galaxies, discovered with the aid of gravitational lensing, providing us with an important opportunity to study galaxy formation in the very ea…

astro-ph.HE2022★ 67 cited

Energy functions of fast radio bursts derived from the first CHIME/FRB catalogue

Tetsuya Hashimoto, Tomotsugu Goto, Bo Han Chen +9

Fast radio bursts (FRBs) are mysterious millisecond pulses in radio, most of which originate from distant galaxies. Revealing the origin of FRBs is becoming central in astronomy. T…

gr-qc2021

Upper limits on Einstein's weak equivalence principle placed by uncertainties of dispersion measures of fast radio bursts

Tetsuya Hashimoto, Tomotsugu Goto, Daryl Joe D. Santos +7

Fast radio bursts (FRBs) are astronomical transients with millisecond timescales occurring at cosmological distances. The observed time lag between different energies of each FRB i…

astro-ph.GA2021★ 8 cited

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 …

astro-ph.HE2021★ 22 cited

A Dyson Sphere around a black hole

Tiger Yu-Yang Hsiao, Tomotsugu Goto, Tetsuya Hashimoto +8

The search for extraterrestrial intelligence (SETI) has been conducted for nearly 60 years. A Dyson Sphere, a spherical structure that surrounds a star and transports its radiative…

astro-ph.GA2020★ 7 cited

Infrared Colours and Spectral Energy Distributions of Hard X-ray Selected Obscured and Compton-thick AGN

Ece Kilerci-Eser, Tomotsugu Goto, Tolga Guver +2

We investigate infrared colours and spectral energy distributions (SEDs) of 338 X-ray selected AGN from Swift-BAT 105-month survey catalogue that have AKARI detection, in order to…