67 citations · 448 across the 25 of their papers we have counts for
25 papers
Bridging Theory and Observation in the SKA Era: A Cosmological Polarized Radiative Transfer Framework for Point-to-Point Polarized Sky Comparisons
Jennifer Y. H. Chan, Alvina Y. L. On, Paul C. W. Lai +1
Realizing the full scientific potential of the SKA requires not only revolutionary instrumentation but also accurate modeling of light propagation in an evolving, expanding Univers…
Rotation Measure Analysis of Shocks and Sloshing Fronts in a Galaxy Cluster Merger Simulation
Jia-Rou Liou, Alvina Y. L. On, H. -Y. Karen Yang +1
Recent observations of the Fornax cluster show depolarization signatures on megaparsec scales, which may be associated with shocks and/or sloshing motions during cluster merger and…
Constraining the Hubble constant and its lower limit from the proper motion of extragalactic radio jets
Tiger Yu-Yang Hsiao, Tomotsugu Goto, Tetsuya Hashimoto +11
The Hubble constant () is a measurement to describe the expansion rate of the Universe in the current era. However, there is a discrepancy between the measurements fr…
BURSTT: Bustling Universe Radio Survey Telescope in Taiwan
Hsiu-Hsien Lin, Kai-yang Lin, Chao-Te Li +44
Fast Radio Bursts (FRBs) are bright millisecond-duration radio transients that appear about 1,000 times per day, all-sky, for a fluence threshold 5 Jy ms at 600 MHz. The FRB radio-…
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…
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…
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…
Constraining violations of the Weak Equivalence Principle Using CHIME FRBs
Kaustubha Sen, Tetsuya Hashimoto, Tomotsugu Goto +7
Einstein's General Relativity (GR) is the basis of modern astronomy and astrophysics. Testing the validity of basic assumptions of GR is important. In this work, we test a possible…
Uncloaking hidden repeating fast radio bursts with unsupervised machine learning
Bo Han Chen, Tetsuya Hashimoto, Tomotsugu Goto +5
The origins of fast radio bursts (FRBs), astronomical transients with millisecond timescales, remain unknown. One of the difficulties stems from the possibility that observed FRBs…
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 …
Empirical assessment of cosmic ray propagation in magnetized molecular cloud complexes
Ellis R. Owen, Alvina Y. L. On, Shih-Ping Lai +1
Molecular clouds are complex magnetized structures, with variations over a broad range of length scales. Ionization in dense, shielded clumps and cores of molecular clouds is thoug…
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…
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…
Observational signatures of cosmic ray interactions in molecular clouds
Ellis R. Owen, Alvina Y. L. On, Shih-Ping Lai +1
We investigate ionization and heating of gas in the dense, shielded clumps/cores of molecular clouds bathed by an influx of energetic, charged cosmic rays (CRs). These molecular cl…
Revealing the cosmic reionisation history with fast radio bursts in the era of Square Kilometre Array
Tetsuya Hashimoto, Tomotsugu Goto, Ting-Yi Lu +7
Revealing the cosmic reionisation history is at the frontier of extragalactic astronomy. The power spectrum of the cosmic microwave background (CMB) polarisation can be used to con…
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…
What determines the maximum stellar surface density of galaxies?
Chih-Teng Ling, Tetsuya Hashimoto, Tomotsugu Goto +5
Observationally, it has been reported that the densest stellar system in the Universe does not exceed a maximum stellar surface density, = Mpc…
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…
Polarised radiative transfer, rotation measure fluctuations and large-scale magnetic fields
Alvina Y. L. On, Jennifer Y. H. Chan, Kinwah Wu +2
Faraday rotation measure at radio wavelengths is commonly used to diagnose large-scale magnetic fields. It is argued that the length-scales on which magnetic fields vary in large-s…
Covariant polarized radiative transfer on cosmological scales for investigating large-scale magnetic field structures
Jennifer Y. H. Chan, Kinwah Wu, Alvina Y. L. On +3
Polarization of radiation is a powerful tool to study cosmic magnetism and analysis of polarization can be used as a diagnostic tool for large-scale structures. In this paper, we p…
SPMHD simulations of Structure Formation
David J. Barnes, Alvina Y. L. On, Kinwah Wu +1
The intracluster medium of galaxy clusters is permeated by μG magnetic fields. Observations with current and future facilities have the potential to illuminate the role of these ma…