Hadronic proton-proton interactions in a superdiffusive one-zone model with proton luminosity 0.14 of spin-down power and diffusion index 1.05 reproduce the 7-200 TeV gamma-ray spectrum from PSR J0622+3749 halo at ambient density 1 cm^{-3}.
Energy spectra of gamma-rays, electrons and neutrinos produced at proton-proton interactions in the very high energy regime
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abstract
We present new parametrisations of energy spectra of secondary particles, $\pi$-mesons, gamma-rays, electrons and neutrinos, produced in inelastic proton-proton collisions. The simple analytical approximations based on imulations of proton-proton interactions using the public available SIBYLL code, provide very good accuracy for energy distributions of secondary products in the energy range above 100 GeV. Generally, the recommended analytical formulae deviate from the simulated distributions within a few percent over a large range of $x=E_i/E_p$ - the fraction of energy of the incident proton transferred to the secondaries. Finally, we describe an approximate procedure of continuation of calculations towards low energies, down to the threshold of $\pi$-meson production.
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Synchrotron self-absorption alters radiation-mediated shock profiles for magnetizations above 10^{-8}, subshocks appear above 0.1, and hadronic processes add a high-energy photon tail with negligible effect on overall shock dynamics.
Reviews IceCube neutrino results, models Galactic plane flux from cosmic ray interactions with the interstellar medium, and discusses prospects for identifying PeVatrons via LHAASO sources.
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Hadronic Origin of Sub-PeV Gamma-Ray Emission from LHAASO J0621+3755
Hadronic proton-proton interactions in a superdiffusive one-zone model with proton luminosity 0.14 of spin-down power and diffusion index 1.05 reproduce the 7-200 TeV gamma-ray spectrum from PSR J0622+3749 halo at ambient density 1 cm^{-3}.
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Magnetized Shocks Mediated by Radiation from Leptonic and Hadronic Processes
Synchrotron self-absorption alters radiation-mediated shock profiles for magnetizations above 10^{-8}, subshocks appear above 0.1, and hadronic processes add a high-energy photon tail with negligible effect on overall shock dynamics.
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IceCube Results and Perspective for Neutrinos from LHAASO Sources
Reviews IceCube neutrino results, models Galactic plane flux from cosmic ray interactions with the interstellar medium, and discusses prospects for identifying PeVatrons via LHAASO sources.