Possible Neutrino Emission from the Pulsar Wind Nebula G63.7+1.1
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909706475274240 |
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| author | Ji, Shunhao Wang, Zhongxiang Zheng, Dong Zheng, Jintao |
| author_facet | Ji, Shunhao Wang, Zhongxiang Zheng, Dong Zheng, Jintao |
| contents | We report on our finding of an excess of $54^{+16}_{-15}$ neutrinos at the location of the pulsar wind nebula (PWN) G63.7+1.1. By analyzing the IceCube track-like neutrino data for a group of 14 PWNe, which are selected as the targets because of their reportedly association with molecular clouds, G63.7+1.1 is found to be the only one detected with neutrino emission and the post-trail significance for the detection is 3.2$σ$. Previously, this PWN was estimated to have an age of $\gtrsim$8\,kyr, contain a candidate pulsar detected in X-rays, and have a distance of $\sim$6\,kpc. More importantly and related to the PWN's possible neutrino emission, surrounding molecular materials are seen to interact with the PWN. On the basis of these properties, we examine the proton-proton interactions as the process for the neutrino production. The PWN (or the pulsar) can collectively provide sufficient energy to power the required high-energy (HE) protons. This possibly first neutrino-emitting case in our Galaxy, with problems or other possibilities to be solved or examined, may reveal to us that PWNe are the significant Galactic HE neutrino sources. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_19724 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Possible Neutrino Emission from the Pulsar Wind Nebula G63.7+1.1 Ji, Shunhao Wang, Zhongxiang Zheng, Dong Zheng, Jintao High Energy Astrophysical Phenomena We report on our finding of an excess of $54^{+16}_{-15}$ neutrinos at the location of the pulsar wind nebula (PWN) G63.7+1.1. By analyzing the IceCube track-like neutrino data for a group of 14 PWNe, which are selected as the targets because of their reportedly association with molecular clouds, G63.7+1.1 is found to be the only one detected with neutrino emission and the post-trail significance for the detection is 3.2$σ$. Previously, this PWN was estimated to have an age of $\gtrsim$8\,kyr, contain a candidate pulsar detected in X-rays, and have a distance of $\sim$6\,kpc. More importantly and related to the PWN's possible neutrino emission, surrounding molecular materials are seen to interact with the PWN. On the basis of these properties, we examine the proton-proton interactions as the process for the neutrino production. The PWN (or the pulsar) can collectively provide sufficient energy to power the required high-energy (HE) protons. This possibly first neutrino-emitting case in our Galaxy, with problems or other possibilities to be solved or examined, may reveal to us that PWNe are the significant Galactic HE neutrino sources. |
| title | Possible Neutrino Emission from the Pulsar Wind Nebula G63.7+1.1 |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2507.19724 |