Differences between revisions 298 and 299
Revision 298 as of 2019-07-23 08:38:19
Size: 10274
Editor: KiwamuIzumi
Comment:
Revision 299 as of 2019-07-24 09:58:04
Size: 10397
Editor: KiwamuIzumi
Comment:
Deletions are marked like this. Additions are marked like this.
Line 28: Line 28:
=== The 101st REM: August 9th, 2019, Friday === === The 101st REM / ISAS Astrophysics Colloquia : August 9th, 2019, Friday ===
Line 41: Line 41:
 * [[http://www.isas.jaxa.jp/home/astro_colloq/| Link to the ISAS Astrophysics Colloquia]]

SRMface_small.jpg

重力波研究交流会

GW research exchange meeting



次回以降の重力波研究交流会

Upcoming GW-REMs


The 102nd REM: someday in September 2019, Friday


The 101st REM / ISAS Astrophysics Colloquia : August 9th, 2019, Friday



The 100th REM: July 12th, 2019, Friday


  • Time: 13:00-14:00
  • Speaker: Shoichi Oshino (ICRR, the University of Tokyo)
    • Title: "A review on BBH formations in N-body simulations"

    • pdf

    • Abstract:
      Since the first gravitational wave was detected by LIGO, several BH merging events have already been observed. However, the process of BBH formation is still unclear. Here, I introduce studies that use N-body simulations to investigate BBH formation by gravitational interactions in star clusters.
  • Zoom connection information


The past GW REM talks


The 99th REM: June 14th, 2019, Friday


  • Time: 13:00-14:00
  • Speaker: Hisaaki Shinkai (Osaka Inst. Tech.)
    • Title: "INO: Interplanetary Network of Optical Lattice Clocks"

    • ref: Int. J. Mod. Phys. D. (2019) https://doi.org/10.1142/S0218271819400029 or arXiv:1809.10317

    • slide pdf

    • Abstract
      The new technique of measuring frequency by optical lattice clocks now approaches to the relative precision of (\Delta f/f)=O(10^{-18}). We propose to place such precise clocks in space and to use Doppler tracking method for detecting low-frequency gravitational wave below 1 Hz. Our idea is to locate three satellites at one A.U. distance (say at L1, L4 & L5 of the Sun-Earth orbit), and apply the Doppler tracking method by communicating ``the time" each other. Applying the current available technologies, we obtain the sensitivity for gravitational wave with three or four-order improvement (h_{n}\sim 10^{-17} or 10^{-18} level in 10^{-5} Hz -- 1 Hz) than that of Cassini satellite in 2001. This sensitivity enables us to observe black-hole mergers of their mass greater than 10^5 M_\odot in the cosmological scale. Based on the hierarchical growth model of black-holes in galaxies, we estimate the event rate of detection will be 20-50 a year. We nickname "INO" (Interplanetary Network of Optical Lattice Clocks) for this system, named after Tadataka Ino (1745--1818), a Japanese astronomer, cartographer, and geodesist.
  • Zoom connection information


The 98th REM: May 17th, 2019, Friday


  • Time: 13:00-14:00
  • Speaker: Federico Paoletti and Irene Fiori (European Gravitational Observatory)
    • Title: "Virgo environmental status"

    • pdf

  • Zoom connection information


The 97th REM: May/10th/2019, Fri.


  • Time: 13:00-14:00
  • Speaker: Tomohiro Yamada (ICRR, University of Tokyo)
  • Zoom connection information


The 96th REM: Apr./5th/2019, Fri.


  • Time: 13:00-14:00
  • Location: Room 604, Science Building 1, the University of Tokyo
  • Speaker: Nobuyuki Matsumoto (Tohoku University)
    • Title: "Table-top experiments for fundamental physics based on technology of gravitational-wave detectors"

    • Presentation material

  • Zoom connection information


The 95th REM: Mar./22nd/2019, Fri.


  • Time: 13:00-14:00
  • Location: KAGRA analysis building@Kamioka
  • Speaker: Lucia Trozzo (ICRR, the University of Tokyo)
    • Title: "Advanced Virgo suspension control"

    • Presentation material

    • Abstract:
      In this talk I will give you an overview of the control strategy adopted on the AdV seismic isolation system (the Superattenuator). I will show you  the impact of this strategy on the residual motion of the test masses and the  AdV sensitivity curve in the region below 10 Hz at the time  of first triple detection of GW.
  • Zoom connection information


The 94th REM: Feb./22nd/2019, Fri.



93rd REM: June/15/2018, Fri.


  • Time: 17:00-19:00
  • Talk 1: Julia Casanueva (INFN - Sezione di Pisa)
    • 「Lock Acquisition in Advanced Virgo (part 1): Guided Lock, Frequency stabilization and Automatic Alignment」
    • Slides

  • Talk 2:Diego Bersanetti (I.N.F.N. - Sezione di Genova)
    • 「Lock Acquisition in Advanced Virgo (part 2): DC Readout, Noise Subtraction & Automation」

    • Slides

  • Zoom connection information


92nd REM June/1/2018, Fri.


  • Time: 10:00-11:00
  • Talk: Andrew Matas (University of Minnesota)「Searches for the stochastic gravitational wave background in Advanced LIGO's first observing run」
  • Zoom connection


91st Dec./8/2017, Fri.



90the Oct./20/2017, Fri.


Archives for the past talks





How to receive the announcements


  • /!\ One has to subscribe to the mailing list called gw_comm in order to receive our announcement emails. Please ask one of our organizers for subscription.

  • The organizers can be found in this page.

gw_talks (last edited 2023-01-27 10:25:41 by shoichi.oshino)