Search for neutrino emission from LHAASO observed Microquasar with IceCube 10-year data
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866909865835757568 |
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| author | Li, Rong-Lan He, Hao-Ning Wei, Da-Ming |
| author_facet | Li, Rong-Lan He, Hao-Ning Wei, Da-Ming |
| contents | The Large High Altitude Air Shower Observatory (LHAASO) has detected ultra-high-energy (UHE; E>100 TeV) gamma-ray emission from five microquasars, suggesting their potential as Galactic PeV cosmic-ray accelerators. At these energies, the Klein-Nishima effect strongly suppresses leptonic processes, making neutrinos observation a crucial test for hadronic acceleration. We present a search for neutrino emission from these LHAASO-identified Microquasars using ten years of IceCube muon-track data. No significant neutrino signal was found in either single-source or stacking analyses. Our stacking result further shows that the studied microquasars population can only account for a small fraction of the diffuse neutrino flux along the Galactic Plane. Finally, we demonstrate that new-generation neutrino telescopes, such as HUN, will have the sensitivity to probe harmonic emission from these candidate PeVatrons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_20687 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Search for neutrino emission from LHAASO observed Microquasar with IceCube 10-year data Li, Rong-Lan He, Hao-Ning Wei, Da-Ming High Energy Astrophysical Phenomena The Large High Altitude Air Shower Observatory (LHAASO) has detected ultra-high-energy (UHE; E>100 TeV) gamma-ray emission from five microquasars, suggesting their potential as Galactic PeV cosmic-ray accelerators. At these energies, the Klein-Nishima effect strongly suppresses leptonic processes, making neutrinos observation a crucial test for hadronic acceleration. We present a search for neutrino emission from these LHAASO-identified Microquasars using ten years of IceCube muon-track data. No significant neutrino signal was found in either single-source or stacking analyses. Our stacking result further shows that the studied microquasars population can only account for a small fraction of the diffuse neutrino flux along the Galactic Plane. Finally, we demonstrate that new-generation neutrino telescopes, such as HUN, will have the sensitivity to probe harmonic emission from these candidate PeVatrons. |
| title | Search for neutrino emission from LHAASO observed Microquasar with IceCube 10-year data |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2510.20687 |