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Journal Article

Ultra-high Energy Inverse Compton Emission from Galactic Electron Accelerators

MPS-Authors
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Breuhaus,  M.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Hahn,  J.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Romoli,  C.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30940

Reville,  B.
Brian Reville, Astrophysical Plasma Theory (APT) - Max Planck Research Group, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons173127

Giacinti,  G.
Brian Reville, Astrophysical Plasma Theory (APT) - Max Planck Research Group, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

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Tuffs,  R.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30597

Hinton,  J.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

External Resource

https://pos.sissa.it/395/932/pdf
(Publisher version)

https://www.epj-conferences.org/articles/epjconf/pdf/2023/06/epjconf_ricap2022_02001.pdf
(Publisher version)

https://iopscience.iop.org/article/10.3847/2041-8213/abe41a/pdf
(Publisher version)

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Citation

Breuhaus, M., Hahn, J., Romoli, C., Reville, B., Giacinti, G., Tuffs, R., et al. (2023). Ultra-high Energy Inverse Compton Emission from Galactic Electron Accelerators. EPJ Web of Conferences, 280: 02001. doi:10.1051/epjconf/202328002001.


Cite as: https://hdl.handle.net/21.11116/0000-0009-EBFA-5
Abstract
It is generally held that >100 TeV emission from astrophysical objects unambiguously demonstrates the presence of PeV protons or nuclei, due to the unavoidable Klein–Nishina suppression of inverse Compton emission from electrons. However, in the presence of inverse Compton dominated cooling, hard high-energy electron spectra are possible. We show that the environmental requirements for such spectra can naturally be met in spiral arms, and in particular in regions of enhanced star formation activity, the natural locations for the most promising electron accelerators: powerful young pulsars. Leptonic scenarios are applied to gamma-ray sources recently detected by the High-Altitude Water Cherenkov Observatory (HAWC) and the Large High Altitude Air Shower Observatory (LHAASO). We show that these sources can indeed be explained by inverse Compton emission.