# Understanding the multiwavelength observation of Geminga's TeV halo: the role of anisotropic diffusion of particles

## TL;DR

This paper explains Geminga's TeV halo and X-ray observations through anisotropic diffusion of electrons/positrons, emphasizing the role of local magnetic field alignment and turbulence without extreme environmental assumptions.

## Contribution

It introduces a model of anisotropic diffusion aligned with the magnetic field to interpret Geminga's multiwavelength observations, avoiding extreme environmental conditions.

## Key findings

- Anisotropic diffusion explains the observed TeV and X-ray emissions.
- Sub-Alfvénic turbulence with aligned magnetic fields suffices for the model.
- No need for extremely low diffusion coefficients or weak magnetic fields.

## Abstract

In this letter we propose that the X-ray and the TeV observations in the vicinity of Geminga can be understood in the framework of anisotropic diffusion of injected electrons/positrons. This interpretation only requires the turbulence in the vicinity of Geminga to be sub-Alfv\'enic with the local mean magnetic field direction approximately aligned with our line of sight towards Geminga, without invoking extreme conditions for the environment, such as an extremely small diffusion coefficient and a weak magnetic field of strength $<1\mu$G as suggested in previous literature.