# Pulsar-wind nebulae and magnetar outflows: observations at radio, X-ray, and gamma-ray wavelengths

## TL;DR

This paper reviews multi-wavelength observations of neutron-star-powered outflows, including pulsar-wind nebulae and magnetar outflows, highlighting diverse morphologies and recent discoveries of magnetar-wind nebulae.

## Contribution

It provides a comprehensive overview of observational properties and recent findings related to PWNe and magnetar outflows across radio, X-ray, and gamma-ray wavelengths.

## Key findings

- Diverse morphologies of PWNe observed in X-ray imaging.
- Evidence of magnetar outflows and possible magnetar-wind nebulae.
- Spectral-energy distributions characterized for various neutron-star-powered outflows.

## Abstract

We review observations of several classes of neutron-star-powered outflows: pulsar-wind nebulae (PWNe) inside shell supernova remnants (SNRs), PWNe interacting directly with interstellar medium (ISM), and magnetar-powered outflows. We describe radio, X-ray, and gamma-ray observations of PWNe, focusing first on integrated spectral-energy distributions (SEDs) and global spectral properties. High-resolution X-ray imaging of PWNe shows a bewildering array of morphologies, with jets, trails, and other structures. Several of the 23 so far identified magnetars show evidence for continuous or sporadic emission of material, sometimes associated with giant flares, and a few possible "magnetar-wind nebulae" have been recently identified.