＜＜＜「@」を「__AT__」に置き換えています＞＞＞

Date: Wed, 1 Jul 2026 13:00:00 +0900
To: sg-l__AT__ml.yukawa.kyoto-u.ac.jp
Subject: [Sg-l:10486] 小研究会 “Dark Matter and Gamma-Ray Astronomy” のお知らせ（9/7-8 __AT__ Kavli IPMU）
From: Koji TSUMURA (Sg-l 経由) 

皆様
（重複して受け取られる場合はご容赦ください）

この度、Kavli IPMU、東京大学柏キャンパスにて小研究会“Dark Matter and Gamma-Ray Astronomy:
An Intersection of Astrophysics and Particle
Physics”を開催します。暗黒物質とガンマ線天文学の接点に焦点を当て、最新のガンマ線観測、暗黒物質理論・直接検出・宇宙線物理・将来観測装置などを結び付け、天体物理学と素粒子物理学の融合を目指すという趣旨になっております。詳細は下記のホームページや本メールの最後の案内をご覧ください。

日程：　2026年9月7-8日
場所：　Kavli IPMU, Lecture Hall
ホームページ：　https://indico.ipmu.jp/event/527/
参加登録締切：　2026年8月23日
一般講演の応募締切：　2026年7月31日

招待講演に加えて、一般講演を受け付けますので、ご興味のある方はホームページのregistrationからご応募下さい。一般講演の数には限りがございますので、ご希望に添えない場合があることをご了承ください。

皆様のご参加をお待ちしております。

発起人一同
高橋忠幸、辻直美、津村浩二、松本重貴、米田浩基

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Recent advances in gamma-ray astronomy are opening new opportunities
to explore dark matter and related questions in particle physics.
Observations across a broad energy range, from the MeV band with
upcoming missions such as COSI, through the GeV band observed by
Fermi, to the TeV and PeV regimes explored by ground-based
observatories such as VERITAS, CTA, HAWC, and LHAASO, provide
complementary windows onto the high-energy universe.

Dark matter remains one of the most important open questions at the
intersection of astrophysics, cosmology, and particle physics.
Gamma-ray observations play a unique role in this context, as they can
probe environments such as the Galactic Center, dwarf spheroidal
galaxies, galaxy clusters, and the extragalactic gamma-ray background.
At the same time, interpreting these observations requires close
interaction between theory, observations, and instrumentation,
including studies of astrophysical foregrounds, cosmic-ray
propagation, source populations, and instrumental backgrounds.

This workshop, Dark Matter and Gamma-Ray Astronomy: An Intersection of
Astrophysics and Particle Physics, aims to bring together researchers
working on dark matter theory, particle physics, gamma-ray
observations, cosmic-ray astrophysics, direct detection, and future
instruments. The workshop will place particular emphasis on
theoretical interpretation, model building, and the connection between
gamma-ray observations and particle-physics scenarios for dark matter
and related new physics. By bringing these perspectives together, the
workshop aims to develop a common language between theory,
observation, and instrumentation.

The workshop will be held primarily in person to encourage
face-to-face discussions. The program will be centered on invited
talks; however, contributed talks will also be solicited. Please note
that the number of slots for contributed presentations is limited.

Key topics include:
- Various dark matter models, including axions/ALPs, WIMPs, and
MeV-scale dark matter
- Qubit-based and other novel approaches to direct dark matter detection
- Gamma-ray observations from MeV to TeV and PeV energies
- Astrophysical searches for axions/ALPs using gamma-ray sources
- Cosmic-ray propagation and astrophysical foregrounds
- Optical constraints on dark matter distributions
- Connections between gamma-ray astronomy and accelerator-based studies
- Future gamma-ray instruments and observational strategies

Invited speakers:
Shotaro Abe (Kyoto U)
Shion Chen (Kyoto U)
Motoko Fujiwara (Kyushu U)
Kohei Hayashi (National Institute of Technology, Sendai College)
Tomohiro Inada (Kyushu U)
Alex Kusenko (UCLA and Kavli IPMU)
Shigeki Matsumoto (IPMU)
Ellis Owen (RIKEN)
Donggeun Tak (Kyung Hee University)
Koji Tsumura (Kyushu U)
Hiroki Yoneda (Kyoto U)