B. Schutz - VLBI for Gravitational Waves: How Networks Add Value

Bernard Schutz, Max-Planck Institute for Gravitational Physics, Albert-Einstein Institute: Gravitational Waves: VLBI for Gravitational Waves: How Networks Add Value 

Preceded by a students' lunch with Bernard Schutz and Sverre Aarseth at noon (at KIAA).

Fri, Oct. 27, 2010 (KIAA Institute Colloquium, Seminar Room): 3:00 p.m.

Gravitational wave detection has always required more than one detector, at a minimum to guarantee confidence that an event is real and not a random spurious glitch in a single detector. But for short bursts of gravitational waves, as from black hole mergers, three or more separated detectors are required to reconstruct all the information. With the recent start of the LCGT project in Japan, the existing LIGO and VIRGO detectors have gained a fourth site, and there might soon be a fifth in Australia. By combining their data coherently, essentially in the same way as radio astronomers combine VLBI data, these enlarged networks can cover more of the sky and operate reliably more of the time. The following could result, within the decade: the detection of several hundred neutron star binary mergers per year; the identification of a handful of gamma ray bursts per year with such mergers; the detection of hundreds of black hole mergers even out to redshifts bigger than 1; the measurement of the local Hubble constant with accuracies of a few percent; and the proof or disproof of the local void hypothesis.

Next Teeminars

Time Plan 2018/2017

Time and Place: 3:00 - 5:00 p.m., NAOC (unless noted otherwise); tbc = to be confirmed
  • Dec. 25: (note unusual Tuesday!): Sambaran Banerjee (Argelander Inst., Univ. Bonn, Germany): Stellar-mass black holes in open clusters: implications for gravitational-wave generation
  • Dec. 21: no tea seminar, MIDAS meeting
  • Dec. 11 (note unusual Tuesday!): Kohei Inayoshi (KIAA): Black hole accretion in the present-day and early universe; and general discussion on supercomputing in China
  • Dec. 7: no tea seminar, KCK10 at Suzhou
  • Nov. 30: no tea seminar
  • Nov. 23: Agostino Leveque (CAMK, Poland): The C MOCCA version: a step toward AMUSE
  • Nov. 16: Discussion with Mirek Giersz (CAMK, Poland)
  • Nov. 9: Sergey Khoperskov (Moscow/Garching)
  • Oct. 19/Nov. 2: no tea seminar
  • Oct. 12:
  • Oct. 5: vacation?
  • Sep. 28:Jongsuk Hong (KIAA): Stellar Evolution in Star Clusters: Applications
  • Sep. 21: Rainer Spurzem (NAOC): Discussion Meeting on Status of Stellar Evolution in NBODY simulations
  • Sep. 14: Planning Session and Reports
  • May 18: Shuo Li (NAOC): Multi-mass galaxy merger simulations




  • Dec. 15: note location and changed speaker: at KIAA Room 208: Shu Qi: Dynamic evolution of free-floating comets in star cluster / Taras Panamarev: N-body model of galactic center
  • Dec. 8: Li Shuo: Tidal disruption in galaxy mergers with Multi-mass and stellar evolution model.
  • Nov. 17: Verónica Vázquez: The merger of two quarks stars. A SPH Newtonian simulation
  • Oct. 27: Mirek Giersz (CAMK Warsaw, Poland): MOCCA - Survey Data Base - Projects (Black Holes and Gravitational Waves from Star Clusters)
  • Oct. 25 Lunch Seminar at KIAA (12:00 p.m.): Holger Baumgardt (Queensland Univ., Australia): The formation of the smallest galaxies
  • Oct. 20: Bohdan Novosyadlyj & Valerii Shulga (Ivan Franko Natl. Univ. of Lviv, Ukraine and Jilin Univ. China): Dark matter and dark energy probes: from Dark Ages to Giant Voids
  • Sep. 15: Xiaoying Pang: Open clusters from SDSS DR 14 | Bai Jing: Short Report on Galev Work | Rainer Spurzem: Short Status Report and Discussion of DRAGON Data Project
    • Sep. 7: Yohai Meiron (Eötvös University, Budapest, Hungary):  Relaxation and mixing of constants of motion in globular clusters
  • Sep. 1: Planning Meeting (Tea Seminar, Conferences, Travel)
      • Next Seminars:

  • Dec. 22: No tea seminar (KCK9)
  • Dec. 29:?


———Summer Break——————————————————

  • May 5: no tea seminar (Lazenby KIAA colloquium overlaps)
  • May 12: Alexandr Zhuk (Odessa  National University, Ukraine and Jilin University, China):  Cosmic screening of the gravitational interaction in the Universe (Abstract)
  • May 19: Xian Chen (DoA, PKU):   Retrieving the rest mass of GW150914  and Rainer Spurzem (Silk Road NAOC): News on NBODY6++GPU and Galactic Center DRAGON



  • Oct. 28: no tea seminar (EANAM7)
  •     Nov. 4: no tea seminar (CAS2016 Wuhan)
  •     Nov. 11: no tea seminar (KIAA Astro Forum)
  •     Nov. 14: DoA/PKU Lunch Talk: Abbas Askar: Monte Carlo Models
  •     Nov. 18: Li Shuo: Binary Black Holes in Merging Galaxies
  •     Nov. 25/Dec. 2: no tea seminar (China/South Africa workshop)
  •     Dec. 9: Matthias Kühtreiber: Galaxy Evolution Models
  •     Dec. 16: Shu Qi: Comets and Planets in Star Clusters/Taras Panamarev: N-Body models of Galactic Center
  •     Dec. 23: Jongsuk Hong: Multiple Populations in star clusters
  •     Dec. 28: Shuo Li: postponed to next year


Past Seminars in this period:


  • Sep. 16 Discussion Meeting with Guests
    1.) Thijs Kouwenhoven, Xian Jiaotong/Liverpool Univ. at Suzhou:
    Disk fragmentation and brown dwarfs in the Galactic field
     2.) Xiaoying Pang, Shanghai Inst. of Technology, on open clusters
     3.) Yohai Meiron, Eoetvoes Univ. Budapest, Hungary, on stellar disks in AGN
  • Sep. 23 at Room 410, Morningside Center of Mathematics near AMSS/CAS (location see link), 4:00 p.m.: Yohai Meiron, Eötvös University (Budapest, Hungary)Triple companion in gravitational wave signals (Abstract) (notice: postponed: Fabian Klein on Initial Models for AGN Disks using pluto)



Past Seminars