3 papers
astro-ph.CO2025
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…
astro-ph.HE2025
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 …
astro-ph.CO2024
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…