Evidence of an Energetic Magnetar Powering 1LHAASO J0500$+$4454
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866908898960605184 |
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| author | Alford, J. A. J. Gelfand, J. D. Abdelmaguid, M. Slane, P. |
| author_facet | Alford, J. A. J. Gelfand, J. D. Abdelmaguid, M. Slane, P. |
| contents | We investigate the origin of unidentified, extended TeV source 1LHAASO J0500$+$4454, considering three possible origins: cosmic rays interacting with a molecular cloud (MC), particles accelerated in a currently undetected supernova remnant (SNR), and an energetic outflow powered by a pulsar. Upper limits on the CO and X-ray emission from the $γ$-ray emitting region disfavor the MC and SNR scenarios, respectively. If a nebula of inverse Compton scattering $e^{\pm}$ powers 1LHAASO J0500$+$4454, then SED modeling indicates that the current particle energy in the nebula is $\sim 4 \times 10^{48}$ erg. If the coincident magnetar SGR 0501$+$4516's rotational energy powered 1LHAASO J0500$+$4454, then a conservative energy budget calculation requires an initial magnetar spin period $P_{0} \lesssim 5$ ms and a spin-down timescale $τ_{\rm sd} \lesssim 30$ yr, which has implications for the origins of magnetars. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_20589 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Evidence of an Energetic Magnetar Powering 1LHAASO J0500$+$4454 Alford, J. A. J. Gelfand, J. D. Abdelmaguid, M. Slane, P. High Energy Astrophysical Phenomena We investigate the origin of unidentified, extended TeV source 1LHAASO J0500$+$4454, considering three possible origins: cosmic rays interacting with a molecular cloud (MC), particles accelerated in a currently undetected supernova remnant (SNR), and an energetic outflow powered by a pulsar. Upper limits on the CO and X-ray emission from the $γ$-ray emitting region disfavor the MC and SNR scenarios, respectively. If a nebula of inverse Compton scattering $e^{\pm}$ powers 1LHAASO J0500$+$4454, then SED modeling indicates that the current particle energy in the nebula is $\sim 4 \times 10^{48}$ erg. If the coincident magnetar SGR 0501$+$4516's rotational energy powered 1LHAASO J0500$+$4454, then a conservative energy budget calculation requires an initial magnetar spin period $P_{0} \lesssim 5$ ms and a spin-down timescale $τ_{\rm sd} \lesssim 30$ yr, which has implications for the origins of magnetars. |
| title | Evidence of an Energetic Magnetar Powering 1LHAASO J0500$+$4454 |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2511.20589 |