|
Size: 4570
Comment:
|
← Revision 336 as of 2025-08-14 15:24:03 ⇥
Size: 3267
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 8: | Line 8: |
| *[[gw_talks/what_is|重力波研究交流会とは?]] *[[gw_talks/what_is|What is REM ?]] |
* [[gw_talks/what_is|What is GW REM? （重力波研究交流会とは?）]] * [[#UsefulLinks | Useful Links ]] * [[#HowToAnnouncements | How to receive announcements ]] |
| Line 13: | Line 14: |
| == 次回以降の重力波研究交流会 == | |
| Line 16: | Line 16: |
=== The 96th REM: sometime in April === |
=== The 133rd REM: Jul. 28th, 2025 === |
| Line 21: | Line 19: |
| * Time: 13:00-14:00 | * Time: 15:00-16:00 * Speaker: Rico Lo (University of Copenhagen, Niels Bohr Institute) * Title: ''"Gravitational-wave signatures of exotic compact objects"'' * Abstract: {{{ While most gravitational-wave signals detected so far are thought to come from black holes, alternatives such as boson stars and gravastars have also been proposed. If sufficiently compact, these exotic objects could produce gravitational waves detectable on Earth, with waveforms distinct from those of black holes. One of the most striking differences is the presence of gravitational-wave echoes—a series of repeating bursts emitted after the object is perturbed, for example in a binary merger. These echoes arise naturally in horizonless ultracompact objects and, if observed, would offer compelling evidence about the true nature of the source. In this talk, I will outline the theoretical foundations of these signatures and review current data analysis efforts to detect them. |
| Line 23: | Line 26: |
| * Speaker: TBA <<BR>> === The 95th REM: Mar./22nd/2019, Fri. === ---- * Time: 13:00-14:00 * Speaker: Lucia Trozzo (ICRR) * Title: "Virgo suspension control (tentative)" * [[Link to the material will be here]] <<BR>> === 94th REM: Feb./22nd/2019, Fri. === ---- * Location: NAOJ (tentative) * Time: 13:00-14:00 * Speaker: Satoshi Tanioka (NAOJ) * "Noise In The Mirror" * [[Link to the material will be here]] * Zoom connection information * Meeting URL: https://zoom.us/j/5045179604 * password: ask the organizers or see the invitation email |
}}} |
| Line 59: | Line 33: |
=== 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」 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8389|Slides]] * Talk 2:Diego Bersanetti （I.N.F.N. - Sezione di Genova） * 「Lock Acquisition in Advanced Virgo (part 2): DC Readout, Noise Subtraction & Automation」 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8390|Slides]] * Zoom connection information * Meeting URL: https://zoom.us/j/8678936825 * password: ask the organizers or see the invitation email <<BR>> === 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」 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8333| Slides]] * Zoom connection * Meeting URL: https://zoom.us/j/8678936825 * password: ask the organizers or see the invitation email |
<<Include(gw_talks/archive_131_140)>> |
| Line 97: | Line 38: |
=== 91st Dec./8/2017, Fri. === |
== Archives for the past talks == |
| Line 100: | Line 40: |
* Location: online with eZuce * Time: 13:00-14:00 * Talk:仏坂健太(Kenta Hotokezaka) (Princeton University)「A neutron star merger GW170817 and its EM counterparts」 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7530|material]] * eZuce connection information * Title: JGW seminar * Community: KEK Community * Password:n/a * Meeting Access Information: SeeVoghRN Application http://srn.ezuce.com/joinSRN?meeting=M9MIMi222eD2Di9298DD99 Mobile App : Meeting ID: 781 4378 or Link: http://srn.ezuce.com/join?meeting=M9MIMi222eD2Di9298DD99 <<BR>> === 90the Oct./20/2017, Fri. === ---- * Location: web meeting through eZuce * Time: 13:00-14:00 * Talk:宮本晃伸 (Nobuaki, Miyamoto)（大阪市立大学; Osaka City Univ.）「重力波観測によるPopIII星の存在の間接的証明方法の研究」 * [[ https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7305 | material]] * eZuce connection information * Title:Monthly JGW seminar * Community: KEK Community * Password:n/a * Meeting Access Information: SeeVoghRN Application http://srn.ezuce.com/joinSRN?meeting=MMMeMn2D2tDsDs9a9sD29M Mobile App : Meeting ID: 779 0427 or Link: http://srn.ezuce.com/join?meeting=MMMeMn2D2tDsDs9a9sD29M == Talks in the past == ---- . {i} [[gw_talks/archive_81_90|91-100th GW-REM talks]] . {i} [[gw_talks/archive_81_90|81-90th GW-REM talks]] . {i} [[gw_talks/archive_71_80|71-80th GW-REM talks]] . {i} [[gw_talks/archive_61_70|61-70th GW-REM talks]] . {i} [[gw_talks/archive_51_60|51-60th GW-REM talks]] . {i} [[gw_talks/archive_41_50|41-50th GW-REM talks]] . {i} [[gw_talks/archive_31_40|31-40th GW-REM talks]] . {i} [[gw_talks/archive_21_30|21-30th GW-REM talks]] . {i} [[gw_talks/archive_11_20|11-20th GW-REM talks]] . {i} [[gw_talks/archive_1_10|1-10th GW-REM talks]] |
* Most of the archives for the earlier years are written in Japanese (it is a history!). . {i} [[gw_talks/archive_131_140|131-140th GW-REM talks (2025-)]] . {i} [[gw_talks/archive_121_130|121-130th GW-REM talks (2024-2025)]] . {i} [[gw_talks/archive_111_120|111-120th GW-REM talks (2023-2024)]] . {i} [[gw_talks/archive_101_110|101-110th GW-REM talks (2019-2022)]] . {i} [[gw_talks/archive_91_100|91-100th GW-REM talks (2017-2019)]] . {i} [[gw_talks/archive_81_90|81-90th GW-REM talks (2016-2017) ]] . {i} [[gw_talks/archive_71_80|71-80th GW-REM talks (2014-2015) ]] . {i} [[gw_talks/archive_61_70|61-70th GW-REM talks (2013-2014) ]] . {i} [[gw_talks/archive_51_60|51-60th GW-REM talks (2012-2013) ]] . {i} [[gw_talks/archive_41_50|41-50th GW-REM talks (2011-2012) ]] . {i} [[gw_talks/archive_31_40|31-40th GW-REM talks (2010-2011) ]] . {i} [[gw_talks/archive_21_30|21-30th GW-REM talks (2009-2010) ]] . {i} [[gw_talks/archive_11_20|11-20th GW-REM talks (2008-2009) ]] . {i} [[gw_talks/archive_1_10|1-10th GW-REM talks (2007-2008) ]] |
| Line 152: | Line 58: |
| <<Anchor(UsefulLinks)>> | |
| Line 154: | Line 61: |
| * [[JGWDoc/HowTo/UpLoad|資料のアップロードの仕方(How to upload material)]] | * [[JGWDoc/HowTo/UpLoadE| How to upload presentation materials to JGW doc database]] |
| Line 156: | Line 63: |
| * [[LCGT/Meeting/EVOJ|EVO遠隔会議システムの使い方あれこれ (Use of EVO remote connection system)]] | * [[ZoomHowTo | How to use Zoom]] * [[LCGT/Meeting/EVOJ| Use of EVO remote connection system (written in Japanese) ]] |
| Line 159: | Line 68: |
<<BR>> <<Anchor(HowToAnnouncements)>> == 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 [[gw_talks/what_is|this page]]. |
重力波研究交流会
GW research exchange meeting
Upcoming GW-REMs
The 133rd REM: Jul. 28th, 2025
- Time: 15:00-16:00
- Speaker: Rico Lo (University of Copenhagen, Niels Bohr Institute)
Title: "Gravitational-wave signatures of exotic compact objects"
- Abstract:
While most gravitational-wave signals detected so far are thought to come from black holes, alternatives such as boson stars and gravastars have also been proposed. If sufficiently compact, these exotic objects could produce gravitational waves detectable on Earth, with waveforms distinct from those of black holes. One of the most striking differences is the presence of gravitational-wave echoes—a series of repeating bursts emitted after the object is perturbed, for example in a binary merger. These echoes arise naturally in horizonless ultracompact objects and, if observed, would offer compelling evidence about the true nature of the source. In this talk, I will outline the theoretical foundations of these signatures and review current data analysis efforts to detect them.
- Abstract:
The past GW REM talks
The 131-140th REM talks
The 133rd REM: Jul. 28th, 2025
- Time: 15:00-16:00
- Speaker: Kazuhiro Yamamoto (U Toyama)
Title: "Coating thermal noise and investigation for reduction"
- Abstract:
Coating thermal noise is one of the fundamental noise sources in interferometric gravitational wave detectors. The reduction of this noise is one of the hottest topics for further detector improvement. However, until the end of the 20th century, nobody expected that a thin coating would contribute thermal noise so largely. Revolutions at the end of the 20th century opened our eyes. I explain what happened around the end of the 20th century and the investigation for coating thermal noise after this revolution. I focus the investigation in Japan, especially, what is going on at Toyama.
- Abstract:
Presentation material, record: https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16759 (only for LVK members)
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.
- Abstract:
The 131st REM: May. 19th, 2025
- Time: 15:00-16:00
- Speaker: Naoki Aritomi (U Tokyo)
Title: "Advanced LIGO detector performance in the fourth observing run"
- Abstract:
I will talk about the LIGO detector performance in O4 based on the recently published paper, Phys. Rev. D 111, 062002 (2025).
- Abstract:
presentation record: https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16768 (only for LVK members)
Archives for the past talks
- Most of the archives for the earlier years are written in Japanese (it is a history!).
Useful links
How to receive the announcements
![/!\](/moin_static193/modern/img/alert.png "/!\")
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.