Mirage Sources and Large TeV Halo-Pulsar Offsets: Exploring the Parameter Space
arXiv:2407.02829 · doi:10.1103/9461-gltv
Abstract
We investigate the asymmetric propagation of 100 TeV electrons (whose radiation mainly concentrates on 20--30 TeV) in turbulent magnetic fields around pulsars, using GPU-accelerated simulations to explore their trajectories and interactions within pulsar wind nebulae and the interstellar medium. Key results include the identification of ``mirage'' sources indicating significant offsets in high-energy emissions from their originating pulsars, challenging the results of traditional symmetric diffusion models. By varying parameters like source distance, magnetic field strength, and electron injection spectral index, the study delineates their effects on observable phenomena such as the probability that a source has at least one mirage around it, as well as the source separation. Our results offer insights into some puzzling sources observed recently by the Large High Altitude Air Shower Observatory (LHAASO), and shed light on the cosmic-ray transport mechanism in the interstellar medium.
References in corpus (30)
- Relativistic Reconnection: an Efficient Source of Non-Thermal Particles
- Extended gamma-ray sources around pulsars constrain the origin of the positron flux at Earth
- Scattering of Cosmic Rays by Magnetohydrodynamic Interstellar Turbulence
- Acceleration of Particles at the Termination Shock of a Relativistic Striped Wind
- The First LHAASO Catalog of Gamma-Ray Sources
- 3HWC: The Third HAWC Catalog of Very-High-Energy Gamma-ray Sources
- Peta-electron volt gamma-ray emission from the Crab Nebula
- The observation of the Crab Nebula with LHAASO-KM2A for the performance study
- Extended Very-High-Energy Gamma-Ray Emission Surrounding PSR J0622 + 3749 Observed by LHAASO-KM2A
- Using HAWC to Discover Invisible Pulsars
- Self-Generated Cosmic-Ray Confinement in TeV Halos: Implications for TeV Gamma-Ray Emission and the Positron Excess
- TeV Halos are Everywhere: Prospects for New Discoveries
- Cosmic Ray Anisotropy as Signature for the Transition from Galactic to Extragalactic Cosmic Rays
- Understanding the multiwavelength observation of Geminga's TeV halo: the role of anisotropic diffusion of particles
- New constraints on modelling the random magnetic field of the MW
- On the Boris solver in particle-in-cell simulation
- Possible origin of the slow-diffusion region around Geminga
- Constraining the properties of the magnetic turbulence in the Geminga region using HAWC -ray data
- Dissipation of the striped pulsar wind
- Dissipation of the striped pulsar wind and non-thermal particle acceleration: 3D PIC simulations
- Numerical propagation of high energy cosmic rays in the Galaxy I: technical issues
- Self-Generated Cosmic-Ray Turbulence Can Explain the Morphology of TeV Halos
- Filamentary Diffusion of Cosmic Rays on Small Scales
- Anisotropic Cosmic Ray Diffusion and its Implications for Gamma-Ray Astronomy
- Klein-Nishina effect and the cosmic ray electron spectrum
- A global model of particle acceleration at pulsar wind termination shocks
- Acceleration of X-ray Emitting Electrons in the Crab Nebula
- TeV halos and the role of pulsar wind nebulae as sources of cosmic ray positrons
- Morphology of Gamma-Ray Halos around Middle-Aged Pulsars: Influence of the Pulsar Proper Motion
- Mirages and Large TeV Halo-Pulsar Offsets from Cosmic Ray Propagation