7th KAGRA International Workshop

18 Dec 2020, 13:00 → 20 Dec 2020, 20:00 Asia/Taipei

National Central University (Hybrid style Workshop)

The 7 th KAGRA international workshop (KIW) will be held on 18-20 December 2020 in National Central University, Taoyuan City, Taiwan. KIW focuses not only the KAGRA project, but also encompasses all related fields such as other gravitational wave experiments, gravitational wave sciences, and multi-messenger astronomy.

This workshop will cover various topics related to gravitational observation; development and characterization of the current and future detector, data analysis, and recent observational results (the results of O3a, from April 2019 to September 2019 by LIGO and Virgo).  We encourage researchers of both experiment and theory, especially of young generations, to make contributions and exchange the ideas at this KIW7.

The series of KIW started in 2016 with a purpose to promote the world-wide gravitational wave observation. KIW is hosted by regional gravitational wave groups in KAGRA together with KAGRA scientific congress. This KIW7 is supported by MOST with grant 109-2916-I-008-001-A1, National Central University, Center for High Energy and High field(CHiP). 

Due to the world-wide pandemic of COVID-19, we decided to employ the hybrid style.

You can attend workshop in face or online. For in-face participants, we will collect registration fee (2000 NTD for normal participant, 1000 NTD for students) for lunch and dinner during the workshop. 

Deadline Registration: December 10 2020 Abstract Submission: November 30 2020

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Committees

Local Organizing Committee:

• Y.Inoue(National Central University)
• R.K Lee(National Tsing Hua University) 
• G.C Liu(Tamkang University) 
• F.L.Lin(National Taiwan Normal University) 
• K.C.Pan(National Tsing Hua University) 
• A.Kong(National Tsing Hua University)

Scientific Organizing Committee:

• S.Haino (Academia Sinica)
• H.Shinkai (Osaka Institute of Technology)
• R.K Lee(National Tsing Hua University) 
• T.Washimi(National Astronomical Observatory of Japan)
• A.Kong(National Tsing Hua University)
• C.H.Wu (Soochow University)

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• CHiP
• Einstein program
• NCU
• MOST
• TPS
• GSROC

Friday, 18 December

13:00 → 14:30 Overview session (Chair: Yuki Inoue): Plenary

Chair:

13:00 Opening remark

Speaker: Takaaki Kajita

13:05 Introduction of KAGRA, Status of KAGRA

Speaker: Hisaaki Shinkai

202012_KIW7_KagraStatus (1).pdf

13:45 General review on LIGO

Speaker: Keita Kawabe (LHO)

G2002124_Kawabe_StatusOfLIGO_v3.pdf

14:30 → 15:00 Coffee Break

15:00 → 17:00 O3&O3GK session(Chair: Yuta Machimura): Plenary

15:00 General review on Virgo

Speaker: Ilaria Nardecchia

15:40 O3a catalogue

Speaker: Stanislav Babak (CNRS)

GWTC-2a_Babak.pdf

16:20 Summary review on O3GK observation

Speaker: Masayuki Nakano

17:00 → 17:05 Announcement of Parallel session and Presentation award: Plenary

Speaker : Yuki Inoue

17:30 → 19:30 Dinner

Saturday, 19 December

09:00 → 10:40 No Session: Parallel (Theory)

09:00 → 10:40 Status report session(Chair: R.K.Lee): Parallel (Experiment)

09:00 Status of KAGRA calibration toward O4

Speaker: Dan Chen (NAOJ)

2020_Dec_KIW_DanChen.pdf

09:30 Status of KAGRA PEM

Speaker: Takaaki Yokozawa (ICRR)

KIW7_201219_yokozawa_v3.pdf

10:00 Acoustic injection in the KAGRA site

Speaker: Tatsuki Washimi (NAOJ)

washimi_KIW7.pdf

09:00 → 10:40 Student session(Burst, Stochastic, CW. Chair: K.C..Pan): Parallel(Analysis)

09:00 (Student) Development of Unsupervised-Learning Based Glitch Classification System

Speaker: G.Ueshima

KIW_LT_ueshima_v2.pdf

09:20 (Student) Modeling and searching for a stochastic gravitational-wave background from ultralight vector bosons

Speaker: Leo Tsukada (The University of Tokyo, RESCEU)

09:40 (Student) A new way for stochastic gravitational wave background map making using maximum entropy method

Speaker: Hsiung Chia Hsuan

A new way for stochastic gravitational-wave background .pptx

10:00 (Student) Data analysis of GWs from core-collapse supernova with Hilbert-Huang Transform

Speaker: Mei Takeda (Osaka City U.)

KIW7_MTakeda.pdf

10:20 (Student) Use of Excess Power Method and Convolutional Neural Network in All-Sky Search for Continuous Gravitational Waves

Speaker: Takahiro S. Yamamoto (Kyoto University)

201219KIW7_yamamoto.pdf

10:40 → 10:45 Coffee Break

10:45 → 11:05 Status report session(Chair: Dan Chen): Parallel (Expeirment)

10:45 Current status of KAGRA noise budget paper

Speakers: Kazuhiro Yamamoto (Faculty of Science, University of Toyama), Keiko Kokeyama (ICRR, U-Tokyo)

Presentation1.pdf

10:45 → 12:25 Student (CAL,PEM,DET) Session (Chair: T.Washimi): Parallel (Analysis)

10:45 (Student) Noise subtraction in offline analysis of KAGRA using independent component analysis

Speaker: Jun'ya Kume (RESCEU, Univ. of Tokyo)

KIW7_kume.pdf

11:05 (Student) Development of lock-loss classification system in large-scale cryogenic gravitational waves telescope, KAGRA

Speaker: YUTA FUJIKAWA (Niigata univ.)

KIW7_Fujikawa-3.pdf

11:25 (Student) Study of the frequency domain analysis method to estimate calibration errors

Speaker: Honglin Lin (NCU)

KIW oral presentation by Steven.pdf

11:45 (Student) Simulation studies of signal characteristics due to gravity field calibrator in gravitational wave detectors

Speakers: Henry Wong (Academia Sinica), HsiangChieh Hsu (Department of Physics, National Cheng Kung University)

Gcal_simulation_20201219_HC_HSU_revised.pdf

12:05 (Student) Improvement of calibration error method with higher order harmonics

Speaker: Hsiang-Yu on behalf of the KAGRA collaboration Huang (NTNU / ASIoP)

Improvement of calibration error method with higher order harmonics.pdf

10:45 → 12:25 Theory session (Chair: Wolung Lee): Parallel (Theory)

10:45 Stellar Mass Black Hole Formation and Multimessenger Signals from Three Dimensional Rotating Core-Collapse Supernova Simulations

Speaker: Kuo-Chuan Pan (National Tsing Hua University)

2020_12_KIW7_pan.pdf

11:35 Gravitational waves from supernova and protoneutron star asteroseismology

Speaker: Hajime Sotani (RIKEN)

20201218-Sotani.pdf

11:05 → 12:25 Student session (Chair: Dan Chen): Parallel (Experiment)

11:05 (Student) Parametric Instability in KAGRA large scale cryogenic gravitational wave telescope

Speaker: Kiichi Kaihotsu (University of Toyama)

KIW7-2020-PI.pdf

11:25 (Student) Optical loss study using a cryogenic folded cavity

Speaker: Satoshi Tanioka

KIW7_ST.pdf

11:45 (Student) Improvement of the laser intensity stabilization system for O4 in the gravitational wave telescope KAGRA

Speaker: Yuki Kuromiya

KIW_20201219.pdf

12:05 (Student) Calibration of PCal Laser Power with O3GK

Speaker: Koki Ito

The 7th KIW Koki Ito.pdf

12:25 → 13:30 Lunch

13:30 → 15:30 Exotic science section (Chair: Yuki Inoue): Parallel (Experiment)

13:30 Axion and Vector dark matter search with gravitational wave detectors

Speaker: Tomohiro Fujita (ICRR, Tokyo University)

Fujita_DM_Talk.pdf

14:00 (Student) Dark matter Axion search with riNg Cavity Experiment DANCE: Signal calibration and sensitivity evaluation

Speaker: Yuka Oshima

DANCE_YukaOshima_7thKIW.pdf

14:10 (Student) Dark matter Axion search with riNg Cavity Experiment DANCE: Development of automated cavity locking system

Speaker: Hiroki Fujimoto

fujimoto_kiw2.pdf

14:20 Cosmic Relic Scattering at Gravitational Wave Detectors

Speaker: Martin Spinrath (NTHU)

Spinrath_KIW_NCU.pdf

14:40 Directly probing ultra-low-mass scalar-field dark matter with gravitational-wave detectors

Speaker: Yevgeny Stadnik

Stadnik_2020-Dec_KAGRA_Workshop (1).pdf

15:00 (Student) Possible Violations to Newton's Inverse-Square Law with Gravitational Waves Detector

Speaker: Miftahul Maarif (Physics Department, National Central University, Taiwan)

KIW 7th - Maarif.pptx

15:20 Discussion

Speaker: Yuta Michimura (The University of Tokyo)

KIW7_ExoticDiscussion.pdf

13:30 → 15:30 Student session(Chair: Tzuu-Kang Chyi): Parallel(Theory)

Author:
Shuai Liu
Co-authors:
Yi-Ming Hu
Jian-dong Zhang
Jianwei Mei
Speaker:
Shuai Liu

13:30 (Student)Science with the TianQin observatory: Preliminary results on stellar-mass binary black holes

Speaker: Shuai Liu

7th_KAGRA_International_Workshop_ShuaiLiu.pdf

13:50 (Student) How does a dark compact object ringdown?

Speaker: Elisa Maggio (Sapienza University of Rome)

kagra_elisa.pdf

14:10 (Student)Excitation of gravitational wave modes by motion: detecting the peculiar velocity of galaxies using extreme mass ratio inspirals

Speaker: Alejandro Torres Orjuela (Peking University)

14:30 (Student)Equilibrium sequences of differentially rotating stars with post-merger-like rotational profiles

Speaker: Panagiotis Iosif (Aristotle University of Thessaloniki)

presentation_piosif_KAGRA_workshop_v3.pdf

13:30 → 15:30 Student session(Test of GR, Astronomy. Chair:G.C.Liu): Parallel (Analysis)

13:30 (Student) Polarization tests of GW170814 and GW170817 using waveforms consistent with alternative theories of gravity

Speaker: Hiroki Takeda

201219KIW7_takeda.pdf

13:50 (Student) On the jet structure of short Gamma-ray Bursts through X-ray light curve modeling

Speaker: En-Tzu Lin

KIW_oral.pdf

14:10 (Student) Generating Kilonova Light Curves Using Autoencoder to Investigate the Properties of a Compact Binary Merging System

Speaker: Surojit Saha (Institute of Astronomy, National Tsing Hua University)

Surojit_Saha_KIW7@20.pdf

14:30 Testing the Propagation of GWs with CPT violation

Speaker: Lijing Shao (Peking University)

CPT_GWTC1_KIW7_20201219.pdf

15:00 OBSERVATIONAL EVIDENCE OF BLACK HOLE FORMATION BY GW-CALORIMETRY IN GW170817

Speaker: Maurice van putten (Sejong University)

KIW.key

KIW.pdf

15:30 → 15:50 Coffee Break

15:50 → 17:10 Multimessenger Astronomy (Chair: A.Kong): Parallel(Analysis)

15:50 Gravitational-wave signal recognition of LIGO data by deep learning

Speaker: He Wang (ITP-CAS)

Slide

16:10 Searching gravitational wave signal with autoregressive approach

Speaker: David C. Y. Hui (Chungnam National University)

hui_kiw7.pdf

16:30 Probing GW friction with GW170817 and GW190521

Speaker: Simone Mastrogiovanni (Astroparticule et Cosmologie Laboratoire, Universite de paris)

7th_kagra_symposium_2020.pdf

15:50 → 17:10 Student session(Chair: Takaaki Yokozawa): Parallel (Expeirment)

15:50 (Student) Measurement of the mechanical loss of reflective coatings for Cryogenic Gravitational wave telescope

Speaker: Yukino Mori (Univ.Toyama)

yukino_mori.pdf

16:10 (Student) Development of tilt adjustment mechanism for KAGRA cryogenic mirror suspension

Speaker: Takumi Nishimoto (ICRR, U-Tokyo)

7thKIW_TNishimoto.pdf

16:30 (Student) Low-Vibration Conductive Cooling of KAGRA Cryogenic Mirror Suspension

Speaker: Tomohiro Yamada

kiw7_201219.pdf

16:50 (Student) Graphical user interface for Finesse simulation tool

Speaker: Naoki Koyama (Niigata university)

KIW7_NKoyama.pdf

15:50 → 17:10 Theory session(Chair: C.H.Wu): Parallel (Theory)

15:50 Black Holes Lessons from Multipole Ratios: A New Window into Black Holes

Speaker: Daniel Mayerson (IPhT, CEA Saclay)

presentation_DRM.pdf

16:30 The problem on stationary states in self gravitational field

Speaker: Stanislav Fisenko

Presentation The problem on stationary states in self gravitational field.ppt

17:10 → 17:15 TBD

Speaker : C.H.Wu

17:10 → 17:15 TBD

Speaker : R.K.Lee

17:10 → 17:15 TBD

Speaker : G.C.Liu

17:30 → 19:30 Dinner: Banquet

Sunday, 20 December

09:00 → 10:30 Toward O4 session(Chair: F.L.Lin): Plenary

Speaker : Stas Babak

09:00 O3a astrophysical distributions

Speaker: Daniel Wysocki (Rochester Institute of Technology)

2020-12-20--o3a-rnp-kagra-meeting-slides.pdf

presentation_DRM.pdf

09:40 Expected sensitivity of O4

Speaker: Yuta Michimura (The University of Tokyo)

KIW7_O4Sensitivity.pdf

10:05 O4 plan and commissioning

Speaker: masayuki nakano (ICRR)

10:30 → 10:45 Coffee Break

10:45 → 12:00 Theory and analysis session(Chair: C.H.Wu): Plenary

10:45 Status of DAC

Speaker: H Tagoshi

11:10 Anisotropy and polarization of gravitational wave background

Speaker: K.W. Ng

11:35 r-process nucleosynthesis in neutron star mergers and kilonovae

Speaker: Meng-Ru Wu

12:00 → 13:00 Lunch

13:00 → 15:00 Squeezing session (Chair: R.K.Lee): Plenary

13:00 Toward real-time quantum state tomography for the squeezed state with machine learning

Speaker: Chien-Ming Wu (National Tsing Hua University)

CMWu KIW 7.pdf

13:20 Frequency dependent squeezing experiment at NAOJ: status and future

Speaker: M. Leonardi

20201220_FDSreport_KIW.pdf

13:40 Frequency-Dependent Squeezing for Gravitational-Wave Detectors

Speaker: Naoki Aritomi

KIW_20201220_aritomi.pdf

14:00 Implementing the quantum parametric amplifiers in Advanced gravitational wave detectors

Speaker: Y Ma

KIW2020.pdf

14:20 Broadband gravitational wave detectors using white light signal recycling

Speaker: Michael Page

MichaelPageKIW20201220-2.pdf

15:00 → 15:15 Coffee Break

15:15 → 17:10 KAGRA + session (Chair:S.Haino): Plenary

15:15 KAGRA-OzGrav - Collaboration Opportunities for a kHz-Band Gravitational-Wave Detector

Speaker: Johannes Eichholz

KAGRA7_NEMO.pdf

15:35 KAGRA sapphire mirror issues and current status

Speaker: M. Leonardi

20201220_MIRreportKIW (1).pdf

15:55 Gravitational Astronomy Sapphire Optics (OSAG) project

Speaker: G. Cagnoli

KIW_OSAG_VCRED_2020.pptx

16:10 Sapphire crystal growth at iLM

Speaker: K. Lebbou

klebbou Talk201202 (1).pdf

16:25 Coating R&D and sapphire developments at LMA

Speaker: J. Degallaix

Degallaix_Kagra_workshop_finalV2.pdf

17:10 → 18:00 Multi Messenger Astronomy(Chair:A.Kong): Plenary

17:10 Gravitational-wave standard siren cosmology

Speaker: Hsin-Yu Chen

kagra2020.pdf

17:35 Astrophysics with joint analysis of multi-messenger observations

Multi-messenger observations of compact binary coalescences will enrich our understanding of the astrophysics behind such sources, especially binary neutron star mergers. The joint analysis of gravitational wave data in conjunction with electromagnetic observations is a crucial ingredient for multi-messenger astrophysics. This talk will present an overview of multi-messenger astrophysics research at the University of Glasgow, including the analysis of kilonova light curves for joint observations and a hierarchical Bayesian analysis for
combining gravitational wave and gamma-ray observations to identify plausible models for gamma-ray burst jet structures.

Speaker: Ik Siong Heng

Heng_KIW7.pdf

18:00 → 18:15 Summary session: Plenary

Speaker : H.Shinkai

18:00 Summary of KIW7

Speaker: Hisaaki Shinkai

202012_KIW7_summary.pdf

18:10 Announcement of KIW8 in Korea

Speaker: S. Lee

KIW8_announcement_SLee_20201220.pdf

18:30 → 20:00 Dinner