Constraints on Hadronic Contributions to LHAASO Sources with Neutrino Observations
May 20, 202111 pages
Published in:
- Astrophys.J. 925 (2022) 1, 85
- Published: Jan 27, 2022
e-Print:
- 2105.09851 [astro-ph.HE]
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Abstract: (IOP)
The Large High Altitude Air Shower Observatory (LHAASO) detected 12 gamma-ray sources above 100 TeV, which are the possible origins of Galactic cosmic-rays. We summarize the neutrino measurements by IceCube and ANTARES in the vicinity of LHAASO sources to constrain the contribution of hadronic gamma-rays in these sources. We find that the current observations constrain hadronic gamma-rays to contribute no more than ∼60% of the gamma-rays from the Crab Nebula. Gamma-rays from two LHAASO sources, LHAASO J1825−1326 and LHAASO J1907+0626, are dominated by leptonic components up to ∼200 TeV, under the hypotheses in the analysis by IceCube. The uncertainties of the constraint on the hadronic gamma-ray emission are discussed. We also constrain the total 100 TeV gamma-ray emission from TeV pulsar wind nebulae by relying on the remarkable sensitivity of LHAASO at that energy.Note:
- 11 pages, 4 figures, 2 tables, accepted by ApJ
- Gamma-ray astronomy (628)
- Cosmic ray sources (328)
- Neutrino astronomy (1100)
- cosmic radiation: galaxy
- gamma ray: emission
- TeV
- IceCube
- sensitivity
- ANTARES
References(0)
Figures(4)
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