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| * [[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 ]] |
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| == 次回以降の重力波研究交流会 == | |
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=== The 102nd REM: someday in September 2019, Friday === |
=== The 103rd REM: December === |
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| * Speaker: TBD * Title: TBD |
* Speaker: TBA * Title: TBA |
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| <<BR>> | |
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| === The 101st REM: August 9th, 2019, Friday === | === The 102nd REM: November 15th, 2019, Friday === |
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| * Location: JAXA Sagamihara campus | * Location: ICRR, the Kashiwanoha campus (tentative) * Speaker: Kyohei Kawaguchi (ICRR, University of Tokyo) * Title: ''"Modeling gravitational waveforms and electromagnetic signals from neutron star binary mergers"'' * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=10990| Link to the material]] * Zoom connection information * Meeting URL: https://zoom.us/j/5045179604 * password: ask the organizers <<BR>> == The past GW REM talks == ---- === The 101st REM / ISAS Astrophysics Colloquium : August 9th, 2019, Friday === ---- * Time: 13:00-14:00 * Location: Room 1537, Bild.A, 5F in JAXA Sagamihara campus |
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| * [[Link to the material will be here]] | * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=10526 | a link to the material (password protected)]] |
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| * Meeting URL: TBA * password: ask the organizers |
* Meeting URL: https://zoom.us/j/5045179604 * password: ask an organizer * Jointly organized with [[http://www.isas.jaxa.jp/home/astro_colloq/|the ISAS Astrophysics Colloquia]] |
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| * Title: ''"A review on BBH formations in N-body simulations (tentative)"'' * [[Link to the material will be here]] |
* Title: ''"A review on BBH formations in N-body simulations"'' * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=10440|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. }}} |
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| * [[Link to the material will be here]] | * [[http://www.oit.ac.jp/is/shinkai/Viewgraphs/201906_GW_INO_shinkai.pdf|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. }}} |
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| == The past GW REM talks == ---- |
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| === The 97th REM: May/10th/2019, Fri. === ---- * Time: 13:00-14:00 * Speaker: Tomohiro Yamada (ICRR, University of Tokyo) * Title: ''"Searching solutions to achieve high-Q sapphire blade in Rome"'' * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=10180|Presentation material]] * Zoom connection information * Meeting URL: https://zoom.us/j/5045179604 * password: ask the organizers <<BR>> === 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"'' * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=10031|Presentation material]] * Zoom connection information * Meeting URL: https://zoom.us/j/5045179604 * password: ask the organizers <<BR>> === 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"'' * [[ https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9983 | 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 * Meeting URL: https://zoom.us/j/5045179604 * password: ask the organizers <<BR>> === The 94th REM: Feb./22nd/2019, Fri. === ---- * Location: NAOJ (tentative) * Time: 13:00-14:00 * Speaker: Satoshi Tanioka (NAOJ) * "Noise In The Mirror" * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9861]] * Zoom connection information * Meeting URL: https://zoom.us/j/5045179604 * password: ask the organizers or see the invitation email <<BR>> === 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 <<BR>> === 91st Dec./8/2017, Fri. === ---- * 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 |
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| * The archives from earlier years are written in Japanese (it is a history!). . {i} [[gw_talks/archive_81_90|91-100th GW-REM talks (2017- )]] |
* Most of the archives for the earlier years are written in Japanese (it is a history!). . {i} [[gw_talks/archive_101_110|101-110th GW-REM talks (2019-)]] . {i} [[gw_talks/archive_91_100|91-100th GW-REM talks (2017-2019)]] |
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| <<Anchor(UsefulLinks)>> | |
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| <<Anchor(HowToAnnouncements)>> |
重力波研究交流会
GW research exchange meeting
Upcoming GW-REMs
The 103rd REM: December
- Time: 13:00-14:00
- Speaker: TBA
- Title: TBA
The 102nd REM: November 15th, 2019, Friday
- Time: 13:00-14:00
- Location: ICRR, the Kashiwanoha campus (tentative)
- Speaker: Kyohei Kawaguchi (ICRR, University of Tokyo)
Title: "Modeling gravitational waveforms and electromagnetic signals from neutron star binary mergers"
- Zoom connection information
Meeting URL: https://zoom.us/j/5045179604
- password: ask the organizers
The past GW REM talks
The 101st REM / ISAS Astrophysics Colloquium : August 9th, 2019, Friday
- Time: 13:00-14:00
- Location: Room 1537, Bild.A, 5F in JAXA Sagamihara campus
- Speaker: Morio Toyoshima (NICT)
Title: "Recent Trends of Space Laser Communications"
- Information for Zoom remote connection
Meeting URL: https://zoom.us/j/5045179604
- password: ask an organizer
Jointly organized with the ISAS Astrophysics Colloquia
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"
- 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
Meeting URL: https://zoom.us/j/5045179604
- password: ask the organizers
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
- 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
Meeting URL: https://zoom.us/j/5045179604
- password: ask the organizers
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"
- Zoom connection information
Meeting URL: https://zoom.us/j/5045179604
- password: ask the organizers
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.