A pulsar wind nebula origin of the LHAASO-detected UHE gamma-ray sources

Abstract

The recent measurement by LHAASO of gamma-ray emission extending up to 100s of TeV from multiple Galactic sources represents a major observational step forward in the search for the origin of the Galactic cosmic rays. The burning question is if this ultra-high-energy emission is associated to acceleration of protons and/or nuclei to PeV energies, or can be associated to PeV-electron accelerators. A strong Klein-Nishina suppression of inverse Compton emission at these energies is unavoidable, nevertheless we show here that inverse Compton emission can provide a natural explanation of the measured emission, and that an association to the established PeV-electron accelerating source class of pulsar wind nebulae is also rather natural. However, a clear distinction between different models requires taking into account multi-wavelength data, having good knowledge about the local environmental conditions and, in some cases, to perform multi-source modeling.

5 pages, 3 figures

References in corpus (18)

• Array Programming with NumPy
• Extended gamma-ray sources around pulsars constrain the origin of the positron flux at Earth
• A radiation transfer model for the Milky-Way: I. Radiation fields and application to High Energy Astrophysics
• Absorption of Very High Energy Gamma Rays in the Milky Way
• Potential PeVatron supernova remnant G106.3+2.7 seen in the highest-energy gamma rays
• Inverse Compton Scenarios for the TeV Gamma-Ray Emission of the Galactic Centre
• Evidence of 200 TeV photons from HAWC J1825-134
• Evidence that Ultra-High-Energy Gamma Rays are a Universal Feature Near Powerful Pulsars
• The Highest Energy HAWC Sources are Likely Leptonic and Powered by Pulsars
• Ultra-high energy Inverse Compton emission from Galactic electron accelerators
• Hadronic vs leptonic models for $\gamma$-ray emission from VER J2227+608
• X-Ray Emission from the PeVatron-candidate Supernova Remnant G106.3+2.7
• Gamma-ray Observation of the Cygnus Region in the 100 TeV Energy Region
• Revealing a peculiar supernova remnant G106.3+2.7 as a petaelectronvolt proton accelerator with X-ray observations
• Radio study of the extended TeV source VER J1907+062
• Investigating $\gamma$-ray halos around three HAWC bright sources in Fermi-LAT data
• Multiwavelength investigation of the candidate Galactic PeVatron MGRO J1908+06
• A new study towards PSR J1826-1334 and PSR J1826-1256 in the region of HESS J1825-137 and HESS J1826-130

Cited by in corpus (16)

• On the potential of bright, young pulsars to power ultra-high gamma-ray sources
• Where are Milky Way's Hadronic PeVatrons?
• Population synthesis of pulsar wind nebulae and pulsar halos in the Milky Way -- Predicted contributions to the very-high-energy sky
• Multi-wavelength study of the galactic PeVatron candidate LHAASO J2108+5157
• Gamma-ray halos around pulsars: impact on pulsar wind physics and galactic cosmic ray transport
• Interaction of a Relativistic Magnetized Collisionless Shock with a Dense Clump
• LHAASO J2226+6057 as a pulsar wind nebula
• Study of maximum electron energy of sub-PeV pulsar wind nebulae by multiwavelength modelling
• Investigating the radiative properties of LHAASO J1908+0621
• Pulsar Wind Nebulae
• Revisiting the propagation of highly-energetic gamma rays in the Galaxy
• Analysis of the possible detection of the pulsar wind nebulae of PSR J1208-6238, J1341-6220, J1838-0537 and J1844-0346
• Pulsar+escape: the recipe for LHAASO sources ?
• Investigating the mysterious nature of 1LHAASO J1740+0948u through deep XMM-Newton observations
• Pulsars as candidates of LHAASO sources J2226+6057, J1908+0621 and J1825-1326: The leptonic origin
• Particle acceleration to PeV energies in Pulsar Wind Nebula: a two zone model