1.1k citations · 7.7k across the 159 of their papers we have counts for
160 papers
Machine learning based Photometric Redshifts for Galaxies in the North Ecliptic Pole Wide field: catalogs of spectroscopic and photometric redshifts
Taewan Kim, Jubee Sohn, Ho Seong Hwang +13
We perform an MMT/Hectospec redshift survey of the North Ecliptic Pole Wide (NEPW) field covering 5.4 square degrees, and use it to estimate the photometric redshifts for the sourc…
Retracing the Cold Plasma Dispersion Law in Pulsar B0329+54: New Insights into Frequency-Dependent Dispersion Measures
Shyam S. Sharma, Tetsuya Hashimoto, Tomotsugu Goto +2
Multiple studies have investigated potential frequency-dependent dispersion measures (DM) in PSR B0329+54, with sensitivities at levels of …
Constraining the Hubble constant with scattering in host galaxies of fast radio bursts
Tsung-Ching Yang, Tetsuya Hashimoto, Tzu-Yin Hsu +5
Measuring the Hubble constant (H) is one of the most important missions in astronomy. Nevertheless, recent studies exhibit differences between the employed methods. Fast radio…
Revisiting the Mysterious Origin of FRB 20121102A with Machine-learning Classification
Leah Ya-Ling Lin, Tetsuya Hashimoto, Tomotsugu Goto +5
Fast radio bursts (FRBs) are millisecond-duration radio waves from the Universe. Even though more than 50 physical models have been proposed, the origin and physical mechanism of F…
The Calibration of Polycyclic Aromatic Hydrocarbon Dust Emission as a Star Formation Rate Indicator in the AKARI NEP Survey
Helen Kyung Kim, Matthew A. Malkan, Toshinobu Takagi +9
Polycyclic aromatic hydrocarbon (PAH) dust emission has been proposed as an effective extinction-independent star formation rate (SFR) indicator in the mid-infrared (MIR), but this…
Finding dusty AGNs from the JWST CEERS survey with mid-infrared photometry
Tom C. -C. Chien, Chih-Teng Ling, Tomotsugu Goto +8
The nature of the interaction between active galactic nuclei (AGNs) and their host galaxies remains an unsolved question. Therefore, conducting an AGN census is valuable to AGN res…
Merging gas-rich galaxies that harbor low-luminosity twin quasars at z = 6.05: a promising progenitor of the most luminous quasars
Takuma Izumi, Yoshiki Matsuoka, Masafusa Onoue +15
We present ALMA [CII] 158 m line and underlying far-infrared (FIR) continuum emission observations ( resolution) toward a quasar-quasar pair system recentl…
Exploring the faintest end of mid-infrared luminosity functions up to with the JWST CEERS survey
Chih-Teng Ling, Tomotsugu Goto, Seong Jin Kim +6
Mid-infrared (MIR) light from galaxies is sensitive to dust-obscured star-formation activities because it traces the characteristic emission of dust heated by young, massive stars.…
Polycyclic aromatic hydrocarbon (PAH) luminous galaxies in JWST CEERS data
Yu-Wei Lin, Cossas K. -W. Wu, Chih-Teng Ling +9
It has been an unanswered question how many dusty galaxies have been undetected from the state-of-the-art observational surveys. JWST enables us to detect faint IR galaxies that ha…
Cosmic star-formation history and black hole accretion history inferred from the JWST mid-infrared source counts
Seong Jin Kim, Tomotsugu Goto, Chih-Teng Ling +7
With the advent of the James Webb Space Telescope (JWST), extra-galactic source count studies were conducted down to sub-microJy in the mid-infrared (MIR), which is several tens of…
The true fraction of repeating fast radio bursts revealed through CHIME source count evolution
Shotaro Yamasaki, Tomotsugu Goto, Chih-Teng Ling +1
Fast Radio Bursts (FRBs) are classified into repeaters and non-repeaters, with only a few percent of the observed FRB population from the Canadian Hydrogen Intensity Mapping Experi…
Machine Learning Classification of Repeating FRBs from FRB121102
Bjorn Jasper R. Raquel, Tetsuya Hashimoto, Tomotsugu Goto +5
Fast Radio Bursts (FRBs) are mysterious bursts in the millisecond timescale at radio wavelengths. Currently, there is little understanding about the classification of repeating FRB…
A T-Dwarf Candidate from JWST Early Release NIRCam data
Po-Ya Wang, Tomotsugu Goto, Simon C. -C. Ho +6
We present a distant Ttype brown dwarf candidate at kpc discovered in the Cosmic Evolution Early Release Science (CEERS) fields by James Webb Space Telescope (JWST…
Quasar Luminosity Function at z = 7
Yoshiki Matsuoka, Masafusa Onoue, Kazushi Iwasawa +41
We present the quasar luminosity function (LF) at , measured with 35 spectroscopically confirmed quasars at . The sample of 22 quasars from the Subaru High-…
Future Constraints on Dark Matter with Gravitationally Lensed Fast Radio Bursts Detected by BURSTT
Simon C. -C. Ho, Tetsuya Hashimoto, Tomotsugu Goto +4
Understanding dark matter is one of the most urgent questions in modern physics. A very interesting candidate is primordial black holes (PBHs; Carr2016). For the mass ranges of $<…
Upper limits on transmitter rate of extragalactic civilizations placed by Breakthrough Listen observations
Yuri Uno, Tetsuya Hashimoto, Tomotsugu Goto +3
The Search for Extra-Terrestrial Intelligence (SETI) has been conducted for over sixty years, yet no technosignatures have been identified. Previous studies have focused on stars i…
Classifying a frequently repeating fast radio burst, FRB 20201124A, with unsupervised machine learning
Bo Han Chen, Tetsuya Hashimoto, Tomotsugu Goto +5
Fast radio bursts (FRBs) are astronomical transients with millisecond timescales. Although most of the FRBs are not observed to repeat, a few of them are detected to repeat more th…
Infrared galaxies detected by the Atacama Cosmology Telescope
Ece Kilerci, Tetsuya Hashimoto, Tomotsugu Goto +4
We report on 167 infrared (IR) galaxies selected by AKARI and IRAS and detected in the Atacama Cosmology Telescope (ACT) Data Release 5 (DR5) sky maps at the 98, 150 and 220 GHz fr…
The molecular gas kinematics in the host galaxy of non-repeating FRB 180924B
Tzu-Yin Hsu, Tetsuya Hashimoto, Bunyo Hatsukade +5
Fast radio bursts (FRBs) are millisecond-duration transients with large dispersion measures. The origin of FRBs is still mysterious. One of the methods to comprehend FRB origin is…
Detection Rate of Fast Radio Bursts in the Milky Way with BURSTT
Decmend Fang-Jie Ling, Tetsuya Hashimoto, Shotaro Yamasaki +5
Fast radio bursts (FRBs) are intense bursts of radio emission with durations of milliseconds. Although researchers have found them happening frequently all over the sky, they are s…
Galaxy source counts at 7.7 m, 10 m and 15 m with the James Webb Space Telescope
Chih-Teng Ling, Seong Jin Kim, Cossas K. -W. Wu +7
We present mid-infrared galaxy number counts based on the Early Release Observations obtained by the James Webb Space Telescope (JWST) at 7.7-, 10- and 15-m (F770W, F1000W and F…
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…
Can luminous Lyman alpha emitters at 5.7 and 6.6 suppress star formation?
Daryl Joe D. Santos, Tomotsugu Goto, Tetsuya Hashimoto +5
Addressing how strong UV radiation affects galaxy formation is central to understanding their evolution. The quenching of star formation via strong UV radiation (from starbursts or…
Source counts at 7.7 to 21 m in CEERS field with James Webb Space Telescope
Cossas K. -W. Wu, Chih-Teng Ling, Tomotsugu Goto +8
Source counts -- the number density of sources as a function of flux density -- represent one of the fundamental metrics in observational cosmology due to their straightforward and…