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We discuss the observational properties of pulsar wind nebulae (PWNe) linking them to the injected (at the termination shock) electron spectral energy distribution and parameters of pulsar magnetospheres. In particular, we (1) present…

High Energy Astrophysical Phenomena · Physics 2018-01-24 Oleg Kargaltsev , Noel Klingler , Sarah Chastain , George G Pavlov

We present preliminary results from a systematic spectral study of pulsars and their wind nebulae using the Chandra X-Ray Observatory. The superb spatial resolution of Chandra allows us to differentiate the compact object's spectrum from…

Astrophysics · Physics 2007-05-23 E. V. Gotthelf , C. M. Olbert

Bow-shock pulsar wind nebulae (PWNe) show a variety of morphological shapes. We attribute this diversity to the geometrical factors: relative orientations of the pulsar rotation axis, proper velocity, and the line of sight (magnetic…

High Energy Astrophysical Phenomena · Physics 2019-01-30 Maxim V. Barkov , Maxim Lyutikov , Dmitry Khangulyan

In the last few years, new observations by CHANDRA and XMM have shown that Pulsar Wind Nebulae present a complex but similar inner feature, with the presence of axisymmetric rings and jets, which is generally referred as {\it jet-torus…

Astrophysics · Physics 2008-11-26 N. Bucciantini

Pulsar Wind Nebulae (PWNe) are ideal astrophysical laboratories where high energy relativistic phenomena can be investigated. They are close, well resolved in our observations, and the knowledge derived in their study has a strong impact in…

High Energy Astrophysical Phenomena · Physics 2015-06-18 N. Bucciantini

The increasing sensitivity of instruments at X-ray and TeV energies have revealed a large number of nebulae associated with bright pulsars. Despite this large data set, the observed pulsar wind nebulae (PWNe) do not show a uniform behavior…

High Energy Astrophysical Phenomena · Physics 2014-02-25 Diego F. Torres , Analía Cillis , Jonatan Martín , Emma de Oña Wilhelmi

Young pulsars spin incredibly quickly, but are also slowing down at a very rapid rate. This process carries away enormous amounts of energy from the star in the form of a relativistic wind. Through the high resolution now offered by the…

Astrophysics · Physics 2007-05-23 Bryan M. Gaensler

We present a detailed analysis of broadband X-ray observations of the pulsar PSR J1420-6048 and its wind nebula (PWN) in the Kookaburra region with Chandra, XMM-Newton, and NuSTAR. Using the archival XMM-Newton and new NuSTAR data, we…

High Energy Astrophysical Phenomena · Physics 2023-03-15 Jaegeun Park , Chanho Kim , Jooyun Woo , Hongjun An , Kaya Mori , Stephen P. Reynolds , Samar Safi-Harb

Pulsar Wind Nebulae (PWNe), structures powered by energetic pulsars, are known for their detection across the entire electromagnetic spectrum, with diverse morphologies and spectral behaviour between these bands. The temporal evolution of…

High Energy Astrophysical Phenomena · Physics 2023-04-05 A. M. W. Mitchell , J. Gelfand

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

The hard X-ray synchrotron emission from pulsar wind nebulae (PWNe) probes energetic particles, closely related to the pulsar injection power at the present time. INTEGRAL has disclosed the yet poorly known population of hard X-ray…

High Energy Astrophysical Phenomena · Physics 2009-06-25 Fabio Mattana , Diego Götz , Régis Terrier , Matthieu Renaud , Maurizio Falanga

We present observations with the Chandra X-ray Observatory of the pulsar wind nebula (PWN) powered by the energetic young pulsar B1509-58. These data confirm the complicated morphology of the system indicated by previous observations, and…

Astrophysics · Physics 2009-11-07 B. M. Gaensler , J. Arons , V. M. Kaspi , M. J. Pivovaroff , N. Kawai , K. Tamura

Produced by the interaction between the ``pulsar wind'' powered by the rotational energy of a neutron star and its surroundings, the study of pulsar wind nebulae (PWNe) provides vital insight into the physics of neutron star magnetospheres…

In this review we describe recent observational and theoretical developments in our understanding of pulsar winds and pulsar-wind nebulae (PWNe). We put special emphasis on the results from observations of well-characterized PWNe of various…

High Energy Astrophysical Phenomena · Physics 2015-08-03 Oleg Kargaltsev , Benoit Cerutti , Yuri Lyubarsky , Edoardo Striani

X-ray polarization observations of pulsar wind nebulae (PWNe) provide crucial insights into magnetic field structures and particle acceleration mechanisms. While the Imaging X-ray Polarimetry Explorer (IXPE) has made significant…

High Energy Astrophysical Phenomena · Physics 2026-03-24 Kuan Liu , Fei Xie , Ming-Yu Ge , Wei Deng , En-Wei Liang

The morphology of young Pulsar Wind Nebulae (PWN) is largely determined by the properties of the wind injected by the pulsar. We have used a recent parametrization of the wind obtained from Force Free Electrodynamics simulations of pulsar…

High Energy Astrophysical Phenomena · Physics 2016-08-04 Rolf Buehler , Matteo Giomi

Evidence from pulsar wind nebula symmetry axes and radio polarization observations suggests that pulsar motions correlate with the spin directions. We assemble this evidence for young isolated pulsars and show how it can be used to…

Astrophysics · Physics 2011-02-11 C. -Y. Ng , Roger W. Romani

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

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 model for pulsar wind nebulae (PWNe) as the result of the magnetohydrodynamic (MHD) downstream flow from a shocked, relativistic pulsar wind has been successful in reproducing many features of the nebulae observed close to the central…

High Energy Astrophysical Phenomena · Physics 2015-06-04 Xiaping Tang , Roger A. Chevalier