MeV–PeV Frontiers: New Perspectives in Gamma-Ray Astronomy and Particle Acceleration
from
Tuesday 16 December 2025 (09:00)
to
Thursday 18 December 2025 (18:00)
Monday 15 December 2025
Tuesday 16 December 2025
09:30
Registration
Registration
09:30 - 10:00
Room: Lecture Hall
10:00
Opening remarks
-
Tadayuki Takahashi
(
Univ. of Tokyo
)
Katsuaki Asano
(
UTokyo/ICRR
)
Opening remarks
Tadayuki Takahashi
(
Univ. of Tokyo
)
Katsuaki Asano
(
UTokyo/ICRR
)
10:00 - 10:20
Room: Lecture Hall
10:20
Galactic Cosmic Ray Accelerators up to 1 PeV and beyond
-
Felix Aharonian
(
YSU
)
Galactic Cosmic Ray Accelerators up to 1 PeV and beyond
Felix Aharonian
(
YSU
)
10:20 - 11:00
Room: Lecture Hall
11:00
Discovering Galactic PeVatrons with LHAASO
-
Dmitriy Khangulyan
(
IHEP (CAS)
)
Discovering Galactic PeVatrons with LHAASO
Dmitriy Khangulyan
(
IHEP (CAS)
)
11:00 - 11:40
Room: Lecture Hall
11:40
Galactic Stellar-mass Black Holes as Potential PeVatrons.
-
Shigeo Kimura
(
Tohoku University
)
Galactic Stellar-mass Black Holes as Potential PeVatrons.
Shigeo Kimura
(
Tohoku University
)
11:40 - 12:20
Room: Lecture Hall
12:20
Lunch Break
Lunch Break
12:20 - 13:20
13:20
Sub-PeV Gamma Rays Observed with Extensive Air Shower Arrays
-
Kazumasa Kawata
(
ICRR
)
Sub-PeV Gamma Rays Observed with Extensive Air Shower Arrays
Kazumasa Kawata
(
ICRR
)
13:20 - 14:00
Room: Lecture Hall
14:00
Next-generation CTA observatory: status first results and future exploration of the VHE sky
-
Ievgen Vovk
(
ICRR/The University of Tokyo
)
Next-generation CTA observatory: status first results and future exploration of the VHE sky
Ievgen Vovk
(
ICRR/The University of Tokyo
)
14:00 - 14:40
Room: Lecture Hall
14:40
Galactic Cosmic Rays and Diffuse Gamma-rays in Baryon Cycle of Milky Way
-
Jiro Shimoda
(
UTokyo
)
Galactic Cosmic Rays and Diffuse Gamma-rays in Baryon Cycle of Milky Way
Jiro Shimoda
(
UTokyo
)
14:40 - 15:20
Room: Lecture Hall
15:20
Tea Break
Tea Break
15:20 - 16:00
16:00
A common four-beam geometry tracing the magnetosphere–wind transition in young pulsars
-
Paul K. H. YEUNG
(
ICRR/UTokyo
)
A common four-beam geometry tracing the magnetosphere–wind transition in young pulsars
Paul K. H. YEUNG
(
ICRR/UTokyo
)
16:00 - 16:40
Room: Lecture Hall
16:40
TeV Gamma-Ray Diffuse Emissions in the Galactic Center Region with CTAO LST-1
-
Shotaro Abe
(
ICRR/The University of Tokyo
)
TeV Gamma-Ray Diffuse Emissions in the Galactic Center Region with CTAO LST-1
Shotaro Abe
(
ICRR/The University of Tokyo
)
16:40 - 17:20
Room: Lecture Hall
Wednesday 17 December 2025
10:00
The onset of particle acceleration from MeV measurements
-
Thomas Siegert
(
JMU Würzburg
)
The onset of particle acceleration from MeV measurements
Thomas Siegert
(
JMU Würzburg
)
10:00 - 10:40
Room: Lecture Hall
10:40
Opening the MeV Window: From Today's Constraints through COSI and Beyond
-
Hiroki Yoneda
(
Kyoto University
)
Opening the MeV Window: From Today's Constraints through COSI and Beyond
Hiroki Yoneda
(
Kyoto University
)
10:40 - 11:20
Room: Lecture Hall
11:20
MeV gamma-ray emissions, occasionally PeV emissions with memory burden by evaporating primordial black holes
-
Kazunori Kohri
(
NAOJ/KEK
)
MeV gamma-ray emissions, occasionally PeV emissions with memory burden by evaporating primordial black holes
Kazunori Kohri
(
NAOJ/KEK
)
11:20 - 12:00
Room: Lecture Hall
12:00
Group photo
Group photo
12:00 - 12:10
Room: Lecture Hall
12:10
Lunch Break
Lunch Break
12:10 - 13:00
13:00
Connections between high-energy neutrinos and MeV-energy photons: What will IceCube do once the MeV window opens?
-
Shigeru Yoshida
(
Chiba University
)
Connections between high-energy neutrinos and MeV-energy photons: What will IceCube do once the MeV window opens?
Shigeru Yoshida
(
Chiba University
)
13:00 - 13:40
Room: Lecture Hall
13:40
Iron beacon in the sky: Centaurus A gamma-ray emission from excitation and de-excitation of heavy ions
-
Koichiro Yasuda
(
UCLA
)
Iron beacon in the sky: Centaurus A gamma-ray emission from excitation and de-excitation of heavy ions
Koichiro Yasuda
(
UCLA
)
13:40 - 14:20
Room: Lecture Hall
14:20
Coronal magnetic activity in nearby Seyfert galaxies
-
Yoshiyuki Inoue
(
Osaka University
)
Coronal magnetic activity in nearby Seyfert galaxies
Yoshiyuki Inoue
(
Osaka University
)
14:20 - 15:00
Room: Lecture Hall
15:00
Tea Break
Tea Break
15:00 - 15:40
15:40
A brighter future for TeV astronomy, thanks to the secondary gamma rays and neutrinos
-
Alexander Kusenko
(
UCLA and Kavli IPMU
)
A brighter future for TeV astronomy, thanks to the secondary gamma rays and neutrinos
Alexander Kusenko
(
UCLA and Kavli IPMU
)
15:40 - 16:20
Room: Lecture Hall
16:20
The Galactic Centre as a Multi-Messenger Laboratory: Prospects for Astronomical Diagnostics and Cosmic-Ray Propagation Theory
-
Ellis Owen
(
RIKEN/ABBL
)
The Galactic Centre as a Multi-Messenger Laboratory: Prospects for Astronomical Diagnostics and Cosmic-Ray Propagation Theory
Ellis Owen
(
RIKEN/ABBL
)
16:20 - 17:00
Room: Lecture Hall
17:00
Bridging thermal and non-thermal phenomena in SNRs by 3D hydro simulations and micro-calorimetric X-ray observations
-
Herman Shiu-Hang Lee
(
Kyoto University
)
Bridging thermal and non-thermal phenomena in SNRs by 3D hydro simulations and micro-calorimetric X-ray observations
Herman Shiu-Hang Lee
(
Kyoto University
)
17:00 - 17:40
Room: Lecture Hall
18:20
Banquet
Banquet
18:20 - 20:00
Thursday 18 December 2025
10:00
High-resolution Imaging and Polarization Measurement of Sub-GeV/GeV Gamma Rays with Balloon-borne Emulsion Telescopes GRAINE project
-
Hiroki Rokujo
(
Kyushu University
)
High-resolution Imaging and Polarization Measurement of Sub-GeV/GeV Gamma Rays with Balloon-borne Emulsion Telescopes GRAINE project
Hiroki Rokujo
(
Kyushu University
)
10:00 - 10:40
Room: Lecture Hall
10:40
Exploring the MeV Gamma-Ray Sky: Results from SMILE-2+ and the SMILE-3 Project
-
Yoshitaka Mizumura
(
ISAS/JAXA
)
Exploring the MeV Gamma-Ray Sky: Results from SMILE-2+ and the SMILE-3 Project
Yoshitaka Mizumura
(
ISAS/JAXA
)
10:40 - 11:20
Room: Lecture Hall
11:20
The GRAMS mission: A Liquid Argon Telescope for MeV Gamma-Ray Astronomy and Dark Matter Searches
-
Hirokazu Odaka
(
Osaka University
)
The GRAMS mission: A Liquid Argon Telescope for MeV Gamma-Ray Astronomy and Dark Matter Searches
Hirokazu Odaka
(
Osaka University
)
11:20 - 12:00
Room: Lecture Hall
12:00
Lunch Break
Lunch Break
12:00 - 13:00
13:00
Is the Fornax galaxy cluster hiding its radio sources?
-
Alvina On
(
National Center for Theoretical Sciences of Taiwan
)
Is the Fornax galaxy cluster hiding its radio sources?
Alvina On
(
National Center for Theoretical Sciences of Taiwan
)
13:00 - 13:40
Room: Lecture Hall
13:40
Multiwavelength observations of PeVatrons and microquasars
-
Naomi Tsuji
(
UTokyo/ICRR
)
Multiwavelength observations of PeVatrons and microquasars
Naomi Tsuji
(
UTokyo/ICRR
)
13:40 - 14:20
Room: Lecture Hall
14:20
Resolving sites of particle acceleration with next-generation high-resolution hard X-ray observatories
-
Chien-Ting Chen
(
NASA MSFC/USRA
)
Resolving sites of particle acceleration with next-generation high-resolution hard X-ray observatories
Chien-Ting Chen
(
NASA MSFC/USRA
)
14:20 - 15:00
Room: Lecture Hall
15:00
Tea Break
Tea Break
15:00 - 15:40
15:40
Discussion
Discussion
15:40 - 16:50
Room: Lecture Hall
16:50
Closing remarks
Closing remarks
16:50 - 17:00
Room: Lecture Hall