PeVatron Candidate SNR G106.3+2.7 in a Low-density Cavity: a Multiwavelength Test
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866917627255848960 |
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| author | Bao, Yiwei Liu, Ruo-Yu Ge, Chong Chen, Yang |
| author_facet | Bao, Yiwei Liu, Ruo-Yu Ge, Chong Chen, Yang |
| contents | In this paper, 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 $γ$-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 $γ$-ray emission of CRs via the hadronuclear interactions with the molecular cloud and the ISM, and use the measured $γ$-ray flux to constrain the ISM density around the SNR. Our results support the picture that the SNR is expanding into a low-density ($n<0.05 cm^{-3}$) cavity, enabling the SNR to be a potential proton PeVatron despite that it presently is not in the very early phase. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_02654 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | PeVatron Candidate SNR G106.3+2.7 in a Low-density Cavity: a Multiwavelength Test Bao, Yiwei Liu, Ruo-Yu Ge, Chong Chen, Yang High Energy Astrophysical Phenomena In this paper, 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 $γ$-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 $γ$-ray emission of CRs via the hadronuclear interactions with the molecular cloud and the ISM, and use the measured $γ$-ray flux to constrain the ISM density around the SNR. Our results support the picture that the SNR is expanding into a low-density ($n<0.05 cm^{-3}$) cavity, enabling the SNR to be a potential proton PeVatron despite that it presently is not in the very early phase. |
| title | PeVatron Candidate SNR G106.3+2.7 in a Low-density Cavity: a Multiwavelength Test |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2401.02654 |