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28 May 2023 to 2 June 2023
Tianfu Cosmic Ray Research Centre
Asia/Shanghai timezone

Constrain the ISM density in the G106.3+2.7 cavity

Not scheduled
35m
Tianfu Cosmic Ray Research Centre

Tianfu Cosmic Ray Research Centre

No. 1500 Kezhi Road, Tianfu New Area, Chengdu, Chin
poster

Speaker

Yiwei Bo (Nanjing University)

Description

We constrain the density of the interstellar medium (ISM) around the hadronic PeVatron candidate, supernova remnant (SNR) G106.3+2.7, based on X-ray and $\gamma$-ray observations. The purpose of this investigation is to understand the influence of the gaseous environment on this SNR as a proton PeVatron candidate. By modelling the self-regulated propagation of the CRs injected from the SNR, we calculate the $\gamma$-ray emission of CRs via the hadronuclear interactions with the molecular cloud and the ISM, and use the measured $\gamma$-ray flux to constrain the ISM density around the SNR. Our results support the picture that the SNR is expanding into a low-density cavity of $n<0.05\,$cm$^{-3}$, enabling the SNR to be a potential proton PeVatron despite that it is not in the very early phase.

Primary authors

Chong Ge (Nanjing University) Ruoyu Liu (Nanjing University) Yiwei Bo (Nanjing University) Prof. Yang Chen (Nanjing University)

Presentation materials

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