visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2017-12-14 15:00 
일시 Thursday, December 14, 2017 at 3:00 pm 
장소 Seminar Room (C303), Creation Hall (3F), KAIST Munji Campus 
연사 Chunglee Kim (KASI) 

Since 2015, the advanced LIGO (Laser Interferometer Gravitational-wave Observatory) in USA and the advanced Virgo in Europe have been successfully discovering black holes and neutron stars via gravitational waves (GWs) in cosmological distances. After the original discovery of a black hole binary (BBH, GW150914) by LIGO, more BBHs are confirmed. The observed waveform of GWs from BBH coalescences (inspiral-merger-ringdown phases) are well described by Einstein's general relativity as well as approximations. LIGO-Virgo's another major breakthrough was thr discovery of GW170817. It is the first extragalactic neutron star - neutron star binary (NS-NS). It turned out that GW170817 is a progenitor of GRB170817A (independently discovered by the Fermi space telescope). Within 24 hrs since the discovery of GW170817, extensive international observation campaign were made using electromagnetic waves (from gamma rays to radio) as well as neutrinos. GW170817 will be recorded as one of the most successful global multi-messenger effort. With the discoveries of BBHs and NS-NS by LIGO and Virgo, GW astronomy has truly begun. The next decades will be a golden era for stellar astrophysics and many surprises are expected. Furthermore, cosmology with GWs seems also promising. Distance measure by GWs for GW170817 (at 40 Mpc) is already powerful enough to put constraints on the Hubble constant. In future, there will be a global network of GW observatories on Earth and in space and broader frequency ranges will be accessible in GWs. In this talk, I will present the highlights of GW astronomy and astrophysics based the LIGO-Virgo observations so far. I will also discuss the prospects of multi-messenger astronomy.

번호 날짜 장소 제목
519 2016-11-24 16:00  #1323(E6-2. 1st fl.)  Harmonic oscillator physics with single atoms in a state-selective optical potential
518 2016-11-29 16:00  #1323(E6-2. 1st fl.)  Symmetry Protected Kondo Metals and Their Phase Transitions
517 2016-12-8 16:00  #1323(E6-2. 1st fl.)  Dynamical Resonance between Two Optical Cavities via Optomechanical Oscillator
516 2016-12-09 13:30  #1323(E6-2. 1st fl.)  Entanglement area law in strongly-correlated systems
515 2017-02-01 14:00  #1323(E6-2. 1st fl.)  Quantum electron optics using flying electrons
514 2018-10-18 16:00  #1323, E6-2  Applications of nonlinear optics for condensed matter researches file
513 2018-10-04 16:00  #1323, E6-2  Engineering light absorption in an ultrathin semiconductor metafilm file
512 2018-10-11 16:00  #1323, E6-2  Dirac electrons in a graphene quasicrystal file
511 2018-10-15 16:00  #1323, E6-2  Universal properties of macroscopic current-carrying systems file
510 2018-10-16 10:00  #1323, E6-2  Capturing protein cluster dynamics and gene expression output in live cells file
509 2018-10-18 10:00  #1323, E6-2  Understanding membrane protein folding using single-molecule force techniques file
508 2018-10-19 10:00  #1323, E6-2  Energy conversion processes during magnetic reconnection in a laboratory plasma file
507 2018-09-05 16:00  #1323, E6-2  Shining a light on fractional excitations file
506 2018-09-20 16:00  #1323, E6-2  Toward Cancer Treatment Using Terahertz Radiation: Demethylation of Cancer DNA file
505 2018-09-20 16:00  #1323, E6-2  Toward Cancer Treatment Using Terahertz Radiation: Demethylation of Cancer DNA file
504 2019-09-18 16:00  Seminar Room #1323  Fall 2019: Physics Seminar Serises file
503 2018-07-27 13:30  #1323, E6-2  Magnetic reversal of artificial spin ice file
502 2018-07-27 13:30  #1323, E6-2  Magnetic reversal of artificial spin ice file
501 2018-05-09 16:00  #1323, E6-2  Recent advances in thermoelectric bulk composites file
500 2018-05-29 16:00  #1323, E6-2  Investigation on metal nanostructure/semiconductor junction and its applications file