宇宙線研究所共同利用研究会・基盤研究（S）研究会
「高エネルギーガンマ線でみる極限宇宙2023」
"The extreme Universe viewed in very-high-energy gamma rays 2023"
(Please see below for the English version.)
2024年2月19日(月)と20日(火)に開催される研究会「高エネルギーガンマ線でみる極限宇宙2023」の最終プログラムをお知らせいたします。
https://indico.icrr.u-tokyo.ac.jp/event/964/program
（プログラムは、このメールの末尾にも掲載しています。）
2月12日（月）23時59分までは、参加のみの登録可能となっております。
https://indico.icrr.u-tokyo.ac.jp/event/964/registrations/
なお、すでにご登録頂いたオンライン参加の方のZoomの接続先は、2月13日（火）頃にお知らせする予定です。
皆様のご参加をお待ちしております。
CTA Japan 一同
-----------------
宇宙線研究所共同利用研究会・基盤研究（S）研究会
「高エネルギーガンマ線でみる極限宇宙2023」
"The extreme Universe viewed in very-high-energy gamma rays 2023"
開催日時：
2024年2月19日(月) 日本時間 10:00 - 17:50
2024年2月20日(火) 日本時間 9:30 - 16:20
※時間帯は多少変更される場合があります。
研究会URL：https://indico.icrr.u-tokyo.ac.jp/e/workshopCTAJ2023
研究会会場（ハイブリッド）： 東京大学柏キャンパス 図書館メディアホール / オンライン（Zoom）
図書館メディアホール
http://www.u-tokyo.ac.jp/campusmap/cam03_04_04_j.html
東京大学柏キャンパスへのアクセス
http://www.icrr.u-tokyo.ac.jp/access/index.html
招待講演者（敬称略）：
Zhen Cao (IHEP, CAS) : LHAASO
Daniela Hadasch (ICRR): CTA LST
Ruoyu Liu (Nanjing Univ.) [online]: gamma-ray emission in star clusters
Alexander Philippov (Univ. of Maryland) [online]: pulsar magnetospheres
Nobuhiro Shimizu (Chiba Univ.): IceCube
Yukikatsu Terada (Saitama Univ./JAXA): XRISM
Leo Tsukada (Penn State Univ.)[online]: transient search in LIGO-Virgo-KAGRA
Ievgen Vovk (ICRR）: intergalactic magnetic field constraints with GRBs
趣旨： Cherenkov Telescope Array (CTA) 計画は、大口径(23 ｍ)・中口径(12 ｍ)・小口径(4 ｍ) の３種類の望遠鏡群を配置して、従来より10 倍の高感度と、かつてない広いエネルギー領域(20 GeV から300 TeV) のガンマ線で、極限宇宙の精密測定を行うことを目指す国際共同プロジェクトです。CTA計画が実現すれば、約1000個の天体からTeVガンマ線が検出できると予想され、パルサー/パルサー星雲、超新星残骸、活動銀河核などの高エネルギー天体での宇宙線加速と伝播過程の解明、銀河形成史や宇宙論、さらにはダークマターの探索、原始ブラックホール探索、ローレンツ不変性の検証などの基礎物理など多岐にわたるサイエンスが可能となります。
日本は、2009年に CTA Japan コンソーシアム(http://www.cta-observatory.jp/)を結成しCTAに正式メンバーとして参加をはたし、130名近くを越えるメンバーが準備研究を推進してきました。2018年10月に、北サイトのカナリー諸島ラ パルマで、日本が大きく貢献してきた大口径望遠鏡初号機が完成し、2019年11月にはかに星雲からのガンマ線、2020年1月から2月にはかにパルサーからのガンマ線の信号検出にも成功しました。現在も、活動銀河核、銀河中心領域、再帰新星RS Ophiuchiなどの検出に成功し、順調に運用を進めています。さらに、現在大口径望遠鏡2-4号基が建設中で2025年には完成予定であり、大口径望遠鏡4台でのステレオ観測を目指しています。また、CTAの南サイトに建設する大口径望遠鏡の検出器の製作準備も開始されています。
今後、CTA時代を迎え、TeVガンマ線天文学がさらに他波長の電磁波観測や、高エネルギーニュートリノ、重力波観測との連携を深め、時間領域天文学、マルチメッセンジャー天文学の一翼を担っていくためにも、研究会を通じて広い分野の研究者と議論を深め、今後の戦略を練り、様々な角度から議論するコミュニティーに開かれたものとして開催いたします。また、基盤研究（S）(2023年度-2027年度)「CTA大口径ガンマ線望遠鏡で解き明かす高エネルギー激動宇宙と暗黒物質」として推進されているサイエンスや望遠鏡の開発状況の報告も含まれますので、この分野に興味もある方の多くのご参加をお待ちしています。
世話人： 井岡 邦仁（YITP）、窪 秀利（ICRR）、齋藤 隆之（ICRR）、
武石隆治（ICRR）、田島 宏康（名大ISEE）、手嶋 政廣（ICRR & MPI）、
戸谷 友則（東京大学）、野田 浩司（千葉大学）、山本 常夏（甲南大学）、
吉越 貴紀（ICRR）、吉田 龍生（茨城大学）
--------------------------------------------------------------------
==========
プログラム：
* invited talks
===JST 10:00 -17:50 Monday, Feb. 19, 2024===
10:00 - 10:25 Registration for in-person participants
10:25 - 10:30 Opening
Session 1: Large-Sized Telescopes of the Cherenkov Telescope Array(CTA)
10:30 - 11:10 (35+5)*
"Status of the CTA Large-Sized Telescopes"
Daniela Hadasch (ICRR, Univ. of Tokyo)
Session 2: Magnetic Fields and Very-High-Energy Gamma-Ray Emissions
11:10 - 12:00 (45+5)* [online 9:10 - 10.00pm EST]
"Pulsar magnetospheres and their radiation"
Alexander Philippov (Univ. of Maryland)
12:00 - 13:10 (70) Group photos + Lunch
13:10 - 13:40 (25+5)
"High-energy gamma-rays
from Isolated stellar-mass black hole magnetosphere""
Koki Kin (Tohhoku Univ.)
13:40 - 14:20 (35+5)*
"Intergalactic magnetic field constraints with VHE-bright GRBs"
Ievgen Vovk (ICRR, Univ. of Tokyo)
14:20 - 14:50 (25+5)
"Very Bright Gamma-Ray Burst Early Afterglow
from Magnetic Bullet"
Yo Kusafuka (ICRR, Univ. of Tokyo)
14:50 - 15:20 (30) Coffee Break
Session 3: High-Energy Astrophysical Observatory Network (1)
15:20 - 16:00 (35+5)*
"Latest status and expectations
for the recently born X-ray observatory
XRISM (the X-Ray Imaging and Spectroscopy Mission) "
Yukikatsu Terada (Saitama Univ.)
Session 4: PeVatrons and the Origin of Cosmic Rays
16:00 - 16:50 (45+5)*
"The LHAASO Status and Recent Results"
Zhen Cao (IHEP, CAS)
16:50 - 17:20 (25+5)
"Potential PeV cosmic ray acceleration
in the middle-aged pulsar-wind nebula HESS J1849-000"
Sei Kato (ICRR, Univ. of Tokyo)
17:20 - 17:50 (25+5)
"Development Status of Small-Sized Telescopes"
Akira Okumura (ISEE, Nagoya Univ.)
18:00 - 20:00 Banquet
===JST 9:30 -16:20 Tuesday, Feb. 20, 2024==
Session 5: High-Energy Astrophysical Observatory Network (2)
9:30 - 10:10 (35+5)* [online 7:30 - 8.10pm EST]
"Overview and prospect
of the gravitational-wave transient search
in LIGO-Virgo-KAGRA's fourth observing run"
Leo Tsukada (Penn State Univ.)
10:10 - 10:50 (35+5)*
"IceCube recent status"
Nobuhiro Shimizu (Chiba Univ.)
Session 6: Cosmic Rays and Star Formation
10:50 - 11:30 (35+5)* [online 9:50 - 10.30am CST]
"Modeling the ultrahigh-energy gamma-ray bubble
in the Cygnus star-forming region"
Ruoyu Liu (Nanjing Univ.)
11:30 - 12:00 (25+5)
"Multi-messenger Probes of the Cosmic Ray Ecocycle
in and around the Milky Way"
Susumu Inoue (Chiba Univ. / ICRR, Univ. of Tokyo)
12:00 -13:10 (70) Lunch
13:10 - 13:40 (25+5)
"Exploring the origins of very-high-energy emission
from starburst galaxy populations"
Ellis R. Owen (Osaka Univ.)
13:40 - 14:10 (25+5)
"Contribution to the cosmic γ-ray background radiation
from star-forming galaxies"
Junling Chen (Univ. of Tokyo)
14:10 - 14:40 (30) Coffee Break
Session 7: Active Galactic Nuclei (AGNs) and Transient Sources
14:40 - 15:10 (25+5)
"Gamma-ray emission from AGN disk wind"
Nobuyuki Sakai (Osaka Univ.)
15:10 - 15:40 (25+5)
"MAGIC+LST-1 joint analysis of BL Lac 2021"
Ryo Imazawa (Hiroshima Univ.)
15:40 - 16:10 (25+5)
"Simulation and analysis
of time-evolutional gamma-ray sources"
Mitsunari Takahashi (ISEE, Nagoya Univ.）
16:10 - 16:20 Closing
======================
-------------------------------------------------------------------------------------------------------------------------------------------------------
=====(English version)======
Dear all,
Thank you very much for your registration.
Here is the final program of the CTA-Japan workshop.
https://indico.icrr.u-tokyo.ac.jp/event/964/program
(The program is also available at the end of this email.)
If you have not yet registered and would like to participate, please register at Registration on the following page. Applications for travel expenses are now closed.
https://indico.icrr.u-tokyo.ac.jp/event/964/registrations/
The deadline for registration is Monday, February 12.
For the online participants: The Zoom connection will be provided on Tuesday, February 13.
We look forward to seeing you at the workshop.
Best regards,
Tatsuo Yoshida on the behalf of the SOC
--------------------------
Workshop: "The extreme Universe viewed in very-high-energy gamma rays 2023"
Date：
1st day： 19 February, 2024
JST 10:00 - 17:50
2nd day: 20 February, 2024
JST 9:30 - 16:20
Venue(hybrid):
The Media Hall of the Kashiwa Library in the Kashiwa Campus, the University of Tokyo
/ Online (Zoom)
Access:
http://www.u-tokyo.ac.jp/content/400020147.pdf #2 Kashiwa Library
https://www.u-tokyo.ac.jp/en/index.html#map #Kashiwa Campus
Outline:
The construction of Cherenkov Telescope Array (CTA)-North Large Size Telescope 1(the first LST) was completed in 2018, at the Observatorio del Roque de los Muchachos site in La Palma. The remaining three Large Size Telescopes (LST2-4) are currently under construction and will be completed in 2025, aiming for stereo observations with 4 LSTs.
The commissioning phase of CTA-North LST1 is currently progressing well. The LST1 detected the gamma-ray signal from the Crab Nebula in November 2019 and successively detected the pulsed gamma-ray emission from the Crab pulsar in January-February 2020. In addition, we have successfully detected Active Galactic Nuclei, the Galactic Center Region, and an outburst of recurrent nova RS Ophiuchi.
The CTA Observatories will play important parts in multi-messenger astronomy with a global network of gravitational wave detectors, the high-energy neutrino observatory, and other wavelength observations. In this workshop we will view the extreme Universe from observational and theoretical aspects and focus on the science targeted by the CTA LSTs, namely Gamma-Ray Bursts, Active Galactic Nuclei, Pulsars, Starburst Galaxies, Dark Matter searches, Primordial Black Hole searches, and test of Lorentz Invariance Violation.
This workshop is supported by the joint research program of the Institute for Cosmic Ray Research (ICRR), the University of Tokyo and JSPS KAKENHI Grant-in-Aid for Scientific Research (S), Number 23H05430 "Revealing the high-energy dynamic universe and dark matter with the CTA large-aperture gamma-ray telescopes".
Invited Speakers :
Zhen Cao (IHEP, CAS) : LHAASO
Daniela Hadasch (ICRR): CTA LST
Ruoyu Liu (Nanjing Univ.) [online]: gamma-ray emission in star clusters
Alexander Philippov (Univ. of Maryland) [online]: pulsar magnetospheres
Nobuhiro Shimizu (Chiba Univ.): IceCube
Yukikatsu Terada (Saitama Univ./JAXA): XRISM
Leo Tsukada (Penn State Univ.)[online]: transient search in LIGO-Virgo-KAGRA
Ievgen Vovk (ICRR）: intergalactic magnetic field constraints with GRBs
Registration:
We would kindly ask you to register if you intend to participate. Please do so here:
https://indico.icrr.u-tokyo.ac.jp/event/964/registrations/
Registration deadline: 12 February, 2024
SOC:
Kunihito Ioka (YITP), Hidetoshi Kubo (ICRR),
Takayuki Saito (ICRR), Ryuji Takeishi (ICRR),
Hiroyasu Tajima (ISEE, Nagoya Univ.）, Masahiro Teshima (ICRR& MPI),
Tomonori Totani (Univ. of Tokyo）, Koji Noda (Chiba Univ.),
Tokonatsu Yamamoto (Konan Univ.), Takanori Yoshikoshi (ICRR),
Tatsuo Yoshida (Ibaraki Univ.)
==========
Program:
* invited talks
===JST 10:00 -17:50 Monday, Feb. 19, 2024===
10:00 - 10:25 Registration for in-person participants
10:25 - 10:30 Opening
Session 1: Large-Sized Telescopes of the Cherenkov Telescope Array(CTA)
10:30 - 11:10 (35+5)*
"Status of the CTA Large-Sized Telescopes"
Daniela Hadasch (ICRR, Univ. of Tokyo)
Session 2: Magnetic Fields and Very-High-Energy Gamma-Ray Emissions
11:10 - 12:00 (45+5)* [online 9:10 - 10.00pm EST]
"Pulsar magnetospheres and their radiation"
Alexander Philippov (Univ. of Maryland)
12:00 - 13:10 (70) Group photos + Lunch
13:10 - 13:40 (25+5)
"High-energy gamma-rays
from Isolated stellar-mass black hole magnetosphere""
Koki Kin (Tohhoku Univ.)
13:40 - 14:20 (35+5)*
"Intergalactic magnetic field constraints with VHE-bright GRBs"
Ievgen Vovk (ICRR, Univ. of Tokyo)
14:20 - 14:50 (25+5)
"Very Bright Gamma-Ray Burst Early Afterglow
from Magnetic Bullet"
Yo Kusafuka (ICRR, Univ. of Tokyo)
14:50 - 15:20 (30) Coffee Break
Session 3: High-Energy Astrophysical Observatory Network (1)
15:20 - 16:00 (35+5)*
"Latest status and expectations
for the recently born X-ray observatory
XRISM (the X-Ray Imaging and Spectroscopy Mission) "
Yukikatsu Terada (Saitama Univ.)
Session 4: PeVatrons and the Origin of Cosmic Rays
16:00 - 16:50 (45+5)*
"The LHAASO Status and Recent Results"
Zhen Cao (IHEP, CAS)
16:50 - 17:20 (25+5)
"Potential PeV cosmic ray acceleration
in the middle-aged pulsar-wind nebula HESS J1849-000"
Sei Kato (ICRR, Univ. of Tokyo)
17:20 - 17:50 (25+5)
"Development Status of Small-Sized Telescopes"
Akira Okumura (ISEE, Nagoya Univ.)
18:00 - 20:00 Banquet
===JST 9:30 -16:20 Tuesday, Feb. 20, 2024==
Session 5: High-Energy Astrophysical Observatory Network (2)
9:30 - 10:10 (35+5)* [online 7:30 - 8.10pm EST]
"Overview and prospect
of the gravitational-wave transient search
in LIGO-Virgo-KAGRA's fourth observing run"
Leo Tsukada (Penn State Univ.)
10:10 - 10:50 (35+5)*
"IceCube recent status"
Nobuhiro Shimizu (Chiba Univ.)
Session 6: Cosmic Rays and Star Formation
10:50 - 11:30 (35+5)* [online 9:50 - 10.30am CST]
"Modeling the ultrahigh-energy gamma-ray bubble
in the Cygnus star-forming region"
Ruoyu Liu (Nanjing Univ.)
11:30 - 12:00 (25+5)
"Multi-messenger Probes of the Cosmic Ray Ecocycle
in and around the Milky Way"
Susumu Inoue (Chiba Univ. / ICRR, Univ. of Tokyo)
12:00 -13:10 (70) Lunch
13:10 - 13:40 (25+5)
"Exploring the origins of very-high-energy emission
from starburst galaxy populations"
Ellis R. Owen (Osaka Univ.)
13:40 - 14:10 (25+5)
"Contribution to the cosmic γ-ray background radiation
from star-forming galaxies"
Junling Chen (Univ. of Tokyo)
14:10 - 14:40 (30) Coffee Break
Session 7: Active Galactic Nuclei (AGNs) and Transient Sources
14:40 - 15:10 (25+5)
"Gamma-ray emission from AGN disk wind"
Nobuyuki Sakai (Osaka Univ.)
15:10 - 15:40 (25+5)
"MAGIC+LST-1 joint analysis of BL Lac 2021"
Ryo Imazawa (Hiroshima Univ.)
15:40 - 16:10 (25+5)
"Simulation and analysis
of time-evolutional gamma-ray sources"
Mitsunari Takahashi (ISEE, Nagoya Univ.）
16:10 - 16:20 Closing
======================
