Upcoming Special Talk

Prof. Takashi Moriya (NAOJ)

"High-redshift supernova surveys with the future near-infrared wide-field telescopes"

Time/Location: 2024-03-26 14:00 [S4-1013]

Abstract:

The transient sky in near-infrared (NIR) is an unexplored frontier in time-domain astronomy. Some NIR transient surveys have been conducted so far and they have been revealing the richness of NIR transients. However, the limiting magnitudes of NIR transient surveys so far have not been as deep as optical transient surveys. Fortunately, there are several wide-field, sensitive NIR facilities will be available in the near future. For example, Euclid started its operation and Roman is planned to be launched in 2026. Subaru Telescope at NAOJ is planning to have a sensitive wide-field NIR imaging instrument with the ground-layer adoptive optics called ULTIMATE-Subaru. These telescopes will allow us to conduct deep and wide-field NIR transient surveys that have never been explored before. Among many possible transients that can be discovered by such sensitive NIR transient surveys, I will discuss the detectability of high-redshift supernovae (SNe) with the upcoming facilities in this talk. High-redshift SNe are important probes of stellar evolution in the early Universe. In particular, pair-instability SNe (PISNe), theorized explosions of massive stars leaving neither neutron stars nor black holes, are predicted to exist exclusively at low metallicity environments. In this talk, we first introduce our high-redshift SN survey conducted by Subaru/Hyper Suprime-Cam (HSC) and discuss our high-redshift SN discoveries so far. Although we discovered several high-redshift SNe up to z = 2.4, we did not find any PISN candidates. In order to discover PISNe at high redshifts, it is ideal to conduct transient surveys in NIR. We will discuss high-redshift transient surveys with Euclid, Roman, and ULTIMATE-Subaru. We argue that Euclid would be able to discover dozens of PISNe up to z ~ 3.5. Having the redder bands, Roman and ULTIMATE-Subaru will allow us to observe PISNe at even higher redshifts entering the Epoch of Reionization – up to z ~ 7. Through high-redshift SN discoveries, Euclid, Roman, and ULTIMATE-Subaru would revolutionize our view on massive star death in the early Universe.


    Special Talk List

    DateSpeakerTitle
    2024-03-26Prof. Takashi Moriya
    (NAOJ)
    High-redshift supernova surveys with the future near-infrared wide-field telescopes
    2024-03-07Dr. Michael H. Wong
    (UC Berkeley / SETI Institute / ASIAA Visitor)
    Variable Atmospheric Composition Sampled by Planetary Probes
    2023-08-08Dr. Edward Lin 林省文博士
    (Department of Physics, University of Michigan)
    The Busted of Trojan Color Conundrum
    2023-08-07Dr. Edward Lin 林省文博士
    (Department of Physics, University of Michigan)
    A deep search across the primitive minor planets of the solar system
    2022-05-17Dr. Yue Shen
    (Univ. of Illinois at Urbana-Champaign)
    Galactic-Scale Supermassive Black Hole Pairs at Cosmic Noon
    2022-04-12Dr. Matthew Holman
    (CFA)
    The Continuing Search for Planet Nine
    尋找第九行星
    2022-03-19Prof. Stella S. R. Offner
    (Department of Astronomy, University of Texas at Austin)
    Stellar Siblings: How Multiple Star Systems Form
    2022-03-18Prof. Stella S. R. Offner
    (Department of Astronomy, University of Texas at Austin)
    Harnessing Machine Learning to Study Star Formation
    2022-03-15Dr. Chao-Lin Kuo
    (Stanford University)
    Demystifying the Big Bang
    2019-08-23Dr. Gregory Herczeg
    (KIAA, Beijing)
    The evolution of pre-main sequence stars and their protoplanetary disks
    2019-05-16李傑信 博士 Dr. Mark Lee
    (美國NASA退休)
    宇宙的顫抖: 相對論與引力波
    2019-01-04Dr. Cheng-Ling Kuo
    (Institute of Space Science, NCU)
    Preliminary Results for Hyperspectrograph for Space Missions
    2018-12-28Dr. Loren C. Chang
    (Institute of Space Science, NCU)
    Developing Spaceflight and Space Situational Awareness Capacity at NCU
    2018-12-21Professor Yue Shen
    (Department of Astronomy, University of Illinois at Urbana-Champaign)
    The final parsec: time-domain exploration of the inner regions of quasars
    2018-12-14Dr. Yuki Inoue
    (Dept. of Physics, NCU)
    Progress of KAGRA Gravitational wave interferometer and multi-messenger astronomy
    2018-12-07Dr. Yu-Jung Chen
    (Dept. of Physics, NCU)
    The evolution of laboratory measurement of photodesorption of ices
    2018-11-30Dr. Shiang-Yu Wang and Dr. Youichi Ohyama
    (ASIAA)
    SPICA-Taiwan: New Opportunities for MIR-FIR Science in 2030s
    2018-11-23Dr. Chow-Choong Ngeow
    (Institute of Astronomy, NCU)
    Learning About RR Lyre in One-Hour
    2018-11-16Dr. Ekaterina Koptelova
    (Institute of Astronomy, NCU)
    Molecular gas around supermassive black holes of quasars at redshift z>7
    2018-11-13Dr. David Jewitt
    (Department of Astronomy, UCLA)
    Two Freaks and a Conundrum
    2018-11-09Dr. Ying-Tung Chen
    (ASIAA)
    Exploring Outer Solar System with Large Programs of CFHT and Subaru
    2018-11-02Dr. Yong Tian
    (Institute of Astronomy, NCU)
    Is Dark Matter REAL?
    2018-10-26Prof. Wen-Ping Chen
    (Institute of Astronomy, NCU)
    Journey to the West: My Sabbatical Adventures
    2018-10-19Prof. Yuan-Hann Chang
    (Dept. of Physics, NCU)
    Study the cosmic rays with the AMS experiment on the International Space Station
    2018-10-12Dr. Chi-Ju Wu
    (Max Planck Institute for Solar System Research)
    From the Sun to climate: solar activity over the last 9000 years
    2018-10-12Dr. Robin Thor
    (Max Planck Institute for Solar System Research)
    Constraints on planetary interiors from laser altimetry
    2018-09-28Dr. Po-Chieh Yu
    (Institute of Astronomy, NCU)
    ZTF Update