CPLUOS Astrophysics team meeting

Asia/Seoul
물리학과

물리학과

Zoom Meeting https://uos-ac-kr.zoom.us/j/8264902652 Meeting ID: 826 490 2652
Description

https://uos-ac-kr.zoom.us/j/8264902652

    • 14:00 15:00
      COSMOLOGY
      • 14:00
        Hyeonmo's Report 10m
        Speaker: Hyeonmo Koo (University of Seoul)

        Head-on Collision Fuzzy/Cold Dark Matter Halos

        • Made a dark matter halo plot.
        • Galic code → No cut-off
        • Dark matter halo → Total angular momentum = 0
      • 14:10
        Young's report. FoF and MST algorithm 10m
        Speaker: Young Ju

        FoF and MST algorithm

        • No progress
      • 14:20
        Hannah's Report 10m
        Speaker: Hannah Jhee (University of Seoul)

        Halos infalling a cluster through filaments

        • How many are halos going out from the filaments?
          • How exactly should we treat filament movements?
          • Negative vperp during > 95% lifetime
          • rperp [Mpc]-vperp [km/s]
            • Reasonable halos
            • Unreasonable halos
              • Shouldn't go this way (lower vperp) in the phase-space.
            • vperp: Not the relative velocity
            • Color: Snapshot number
        • Filament treatment
          • 2-d projection along z-axis
          • 2-d slice of 1 Mpc thickness along z-axis
        • We study motion of the filaments around halos.
        • Goal: Approaching to secret of galaxy evolution.
      • 14:30
        Seyeon's Report - CLML 10m
        Speaker: Se Yeon Hwang (Universe of Seoul)

        Cosmology with Large scale structure using Machine Learning (CLML)

        • Simulation is done.
        • Get galaxies catalog-HOD pipeline.
        • Goal: ra, dec, observed redshift of galaxies
        • Single dark matter halo = Set center galaxy with same position and velocity with dark matter halo.
          • Mass [Msun]-Navg
          • x-axis: Mass of dark matter halo
          • y-axis: Average number of galaxies at each mass
          • This slope depends on parameters.
          • Dot: This dot is the galaxy.
        • Check finger of god effect in redshift space with galaxies catalog.
          • M ~ 1013 or M ~ 1015
        • Future work
          • Apply this Halo Occupation Distribution (HOD) pipeline to dark matter halo catalog.
      • 14:40
        Sumi's report 10m
        Speaker: Sumi Kim (University of Seoul)

        Cosmology of High-Order Statistics (CHOA)

        • No progress
      • 14:50
        Dr.Sabiu's Report 10m
        Speaker: Dr Cristiano Sabiu (University of Seoul)

        Deep Learning the Deep Sky: Recovering low surface brightness objects with machine learning

        • No progress
    • 15:00 15:10
      Discussion 10m