14–24 Jul 2025
CICG - International Conference Centre - Geneva, Switzerland
Europe/Zurich timezone
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Observation of cosmic-ray acceleration and escape from SNR W44 by LHAASO

18 Jul 2025, 16:05
15m
CICG - International Conference Centre - Geneva, Switzerland

CICG - International Conference Centre - Geneva, Switzerland

17 rue de Varembé CH - 1211 Geneva Switzerland
Talk Gamma-Ray Astrophysics GA

Speaker

Hanrong WU (IHEP)

Description

We present the analysis of 4 year LHAASO data of the middle-aged SNR W44 and the massive mocecular gas complex that surrounds it. We confirm the presence of the extended gamma-ray structure located near the remnant. Based on the high-resolution gas maps, we demonstrate that gamma-ray structures are caused by the interaction of escaped relativistic particles with Moclecular Clouds。We argu that the revealed cosmic-ray "clouds" suggest an anisotropic character of the escape of high energy particles frem the shell.

Authors

Hanrong WU (IHEP) Prof. Min Zha (IHEP) Prof. Bin Zhang (IHEP) Prof. Zhen Cao (IHEP) Felix Aharonian

Presentation materials

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