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The most numerous source class that emerged from the H.E.S.S. Galactic Plane Survey are Pulsar Wind Nebulae (PWNe). The 2013 reanalysis of this survey, undertaken after almost 10 years of observations, provides us with the most sensitive…

High Energy Astrophysical Phenomena · Physics 2019-08-14 S. Klepser , S. Carrigan , E. de Oña Wilhelmi , C. Deil , A. Förster , V. Marandon , M. Mayer , K. Stycz , K. Valerius

This paper discusses the relation between the study of the fluxes of cosmic rays, gamma rays and neutrinos, and the connection of these observations with the newly born field of gravitational wave astronomy.

High Energy Astrophysical Phenomena · Physics 2018-02-14 Paolo Lipari

This paper reports the results of the numerical study of the formation of aspherical Planetary Nebulae through the Generalised Interacting Winds Model, taking into account the effects caused by the evolving central star and fast wind. The…

Astrophysics · Physics 2015-06-24 Garrelt Mellema

One prediction of particle acceleration in the supernova remnants in the magnetic wind of exploding Wolf Rayet and Red Super Giant stars is that the final spectrum is a composition of a spectrum $E^{-7/3}$ and a polar cap component of…

High Energy Astrophysical Phenomena · Physics 2010-12-01 Peter L. Biermann , Julia K. Becker , Jens Dreyer , Athina Meli , Eun-Suk Seo , Todor Stanev

Pulsar wind nebulae (PWNe) are important sources for understanding galactic high-energy processes, but it is controversial until now about how high-energy particles in PWNe are accelerated and transported. Lacking radio counterparts of…

High Energy Astrophysical Phenomena · Physics 2025-03-04 Yu Zhang , Yihan Liu , C. -Y. Ng , Mallory S. E. Roberts , Lili Yang

The exclusive Galactic gamma-ray club has opened up to new members. Supernova remnants, pulsar wind nebulae, and massive binary systems hosting a compact object have recently joined the young pulsars as firmly established sources of gamma…

Astrophysics · Physics 2008-04-03 Isabelle A. Grenier

A remarkable number of pulsar wind nebulae (PWN) are coincident with EGRET gamma-ray sources. X-ray and radio imaging studies of unidentified EGRET sources have resulted in the discovery of at least 6 new pulsar wind nebulae (PWN).…

The status of numerical hydrodynamical models for Planetary Nebulae is reviewed. Since all of the numerical work is based on the interacting winds model, we start with a description of this model and give an overview of the early analytical…

Astrophysics · Physics 2007-05-23 Garrelt Mellema , Adam Frank

In this review paper on pulsar wind nebulae (PWN) we discuss the properties of such nebulae within the context of containment against cross-field diffusion (versus normal advection), the effect of reverse shocks on the evolution of offset…

Astrophysics · Physics 2015-05-13 O. C. de Jager , A. Djannati-Ataï

In gamma-ray binaries neutron star is orbiting a companion that produces a strong stellar wind. We demonstrate that observed properties of "stellar wind"-"pulsar wind" interaction depend both on the overall wind thrust ratio, as well as…

High Energy Astrophysical Phenomena · Physics 2024-06-26 Maxim V. Barkov , Evgeniy Kalinin , Maxim Lyutikov

Recent observations of a few young pulsar wind nebulae (PWNe) have revealed their morphologies in some detail. Given the availability of spatio-spectral-temporal data, we use our multi-zone (1D) leptonic emission code to model the PWNe…

High Energy Astrophysical Phenomena · Physics 2024-11-28 A. Kundu , Jagdish C. Joshi , C. Venter , N. E. Engelbrecht , W. Zhang , Diego F. Torres , I. Sushch , Shuta J. Tanaka

Some planetary nebulae (PNe) host X-ray-emitting hot bubbles shaped by stellar wind interactions and/or harbor X-ray-emitting central stars due to accretion, shocks within their fast stellar winds, or even chromospheric emission from binary…

High Energy Astrophysical Phenomena · Physics 2025-10-09 Haoyang Yuan , Martin A. Guerrero , Quentin Parker , Rodolfo Montez

A complete set of diagnostic tools aimed at producing synthetic synchrotron emissivity, polarization, and spectral index maps from relativistic MHD simulations is presented. As a first application we consider here the case of the emission…

Astrophysics · Physics 2009-11-11 Luca Del Zanna , Delia Volpi , Elena Amato , Niccolo' Bucciantini

The regulation of the baryonic content in dwarf galaxies is a long-standing problem. Supernovae (SNe) are supposed to play a key role in forming large-scale galactic winds by removing important amounts of gas from galaxies. SNe are…

Astrophysics of Galaxies · Physics 2020-07-01 Gohar Dashyan , Yohan Dubois

Very high energy (VHE) gamma-ray observations have proven to be very successful in localizing Galactic acceleration sites of VHE particles. Observations of shell-type supernova remnants have confirmed that particles are accelerated to VHE…

Astrophysics · Physics 2009-11-13 G. Pühlhofer

In the very-high-energy (VHE) gamma-ray wave band, pulsar wind nebulae (PWNe) represent to date the most populous class of Galactic sources. Nevertheless, the details of the energy conversion mechanisms in the vicinity of pulsars are not…

Astrophysics · Physics 2019-08-14 S. Carrigan , J. A. Hinton , W. Hofmann , K. Kosack , T. Lohse , O. Reimer

The large-scale structure of pulsar wind nebulae (PWNe) tells us a considerable amount about their average magnetic fields, the total particle input from the pulsar winds, and the confining pressure at their outer boundaries. However, the…

Astrophysics · Physics 2016-08-30 Patrick Slane

In a recent work, we numerically studied the radiative properties of the reverberation phase of pulsar wind nebulae (PWNe), i.e., when the reverse shock created by the supernova explosion travels back towards the pulsar, compressing the…

High Energy Astrophysical Phenomena · Physics 2019-04-10 Diego F. Torres , Tingting Lin , Francesco Coti Zelati

While supernova remnants (SNRs) have long been considered prime candidates for the source of cosmic rays, at least to energies up to ~10^14 eV, it is only over the past several years that direct evidence of such energetic particles in SNRs…

Astrophysics · Physics 2007-05-23 Patrick Slane

In the last decade, the relativistic magnetohydrodynamic (MHD) modelling of pulsar wind nebulae, and of the Crab nebula in particular, has been highly successful, with many of the observed dynamical and emission properties reproduced down…

High Energy Astrophysical Phenomena · Physics 2016-10-26 B. Olmi , L. Del Zanna , E. Amato , N. Bucciantini , A. Mignone