• gw_talks

重力波研究交流会

GW research exchange meeting

• What is GW REM? （重力波研究交流会とは?）

• Useful Links

• How to receive announcements

Upcoming GW-REMs

The 132nd REM: Jun. 5th, 2025

• Time: 11:00-12:00
• Speaker: Alvin Li (U Tokyo, RESCEU)

  • Title: "Gravitational Wave Lensing: Current Status and Future Prospects"

    • Abstract:

      Gravitational lensing of gravitational waves offers a unique opportunity to probe both astrophysical and cosmological phenomena, from the population properties of compact binaries to the distribution of matter in the Universe. As gravitational waves travel through the Universe, their paths can be deflected, and their amplitudes can be (de)-magnified by intervening massive structures. This leads to various observable signatures, including magnification bias, arrival time delays, and repeated signals.
      In this talk, I will present an overview of gravitational wave lensing, beginning with the theoretical foundations and the classification of lensing regimes relevant to ground-based detectors. I will review the status of current searches for lensed gravitational wave events, highlighting recent results from the third observing run (O3) of the LIGO-Virgo-KAGRA collaboration. In addition, I will discuss the various methods employed in lensing analyses and the challenges associated with confidently identifying lensed events.
      I will then outline the prospects for detecting gravitational wave lensing in upcoming observing runs and the potential scientific returns such detections could offer. I will also discuss the specific contributions KAGRA can make in making the first lensed gravitational wave detection.

The past GW REM talks

Archives for the past talks

• Most of the archives for the earlier years are written in Japanese (it is a history!).

  • 131-140th GW-REM talks (2025-)

  • 121-130th GW-REM talks (2024-2025)

  • 111-120th GW-REM talks (2023-2024)

  • 101-110th GW-REM talks (2019-2022)

  • 91-100th GW-REM talks (2017-2019)

  • 81-90th GW-REM talks (2016-2017)

  • 71-80th GW-REM talks (2014-2015)

  • 61-70th GW-REM talks (2013-2014)

  • 51-60th GW-REM talks (2012-2013)

  • 41-50th GW-REM talks (2011-2012)

  • 31-40th GW-REM talks (2010-2011)

  • 21-30th GW-REM talks (2009-2010)

  • 11-20th GW-REM talks (2008-2009)

  • 1-10th GW-REM talks (2007-2008)

Useful links

• How to upload presentation materials to JGW doc database

• How to use Zoom

• Use of EVO remote connection system (written in Japanese)

• How to join KEK community in eZuce

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.