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Energetic pulsars power winds of relativistic leptons which produce photon nebulae (so- called pulsar wind nebulae, PWNe). Their spectral energy distribution has a double-humped structure: the first hump lies in the X-ray regime, the second…

Astrophysics of Galaxies · Physics 2013-05-16 M. Mayer , J. Brucker , M. Holler , I. Jung , K. Valerius , C. Stegmann

We study the $\gamma$-ray emission from the pulsar magnetosphere based on outer gap models, and the TeV radiation from pulsar wind nebulae (PWNe) through inverse Compton scattering using a one-zone model. We showed previously that GeV…

Astrophysics · Physics 2009-11-10 W. Wang , Z. J. Jiang , C. S. J. Pun , K. S. Cheng

We report on Australia Telescope Compact Array observations of the ~10^5 yr old pulsar PSR B0906-49. In an image containing only off-pulse emission, we find a weak, slightly extended source coincident with the pulsar's position, which we…

Astrophysics · Physics 2009-10-30 B. M. Gaensler , B. W. Stappers , D. A. Frail , S. Johnston

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

Combined X-ray synchrotron and inverse-Compton gamma-ray observations of pulsar wind nebulae (PWN) may help to elucidate the processes of acceleration and energy loss in these systems. In particular, such observations provide constraints on…

A systematic X-ray survey of the most energetic rotation-powered pulsars known, based on spin-down energy loss rate, $\dot E$ = $I\omega\dot\omega$, shows that all energetic pulsars with $\dot E > \dot E_{c} \approx 3.4 \times\ 10^{36}$ erg…

Astrophysics · Physics 2007-05-23 E. V. Gotthelf

There are at least 125 Galactic pulsar wind nebulae (PWNe) that have been discovered from radio wavelengths to TeV gamma-rays, the majority of which were first identified in radio or X-ray surveys. An increasing number of PWNe are being…

High Energy Astrophysical Phenomena · Physics 2022-09-27 Jordan Lynn Eagle

We report on a sensitive survey for radio pulsar wind nebulae (PWN) towards 27 energetic and/or high velocity pulsars. Observations were carried out at 1.4 GHz using the Very Large Array and the Australia Telescope Compact Array, and…

Astrophysics · Physics 2015-06-24 B. M. Gaensler , B. W. Stappers , D. A. Frail , D. A. Moffett , S. Johnston , S. Chatterjee

The traditional view of radio pulsar wind nebulae (PWN), encouraged by the Crab nebula's X-ray and radio morphologies, is that they are a result of the integrated history of their pulsars' wind. The radio emission should therefore be…

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

An increasing number of pulsar wind nebulae (PWNe) are being identified in the TeV band by ground-based Imaging Air Cherenkov Telescopes such that they constitute the dominant source class of Galactic TeV emitters. However, MeV-GeV PWN…

High Energy Astrophysical Phenomena · Physics 2025-06-24 Jordan Eagle , Daniel Castro , Wei Zhang , Diego Torres , Jean Ballet , The Fermi-LAT Collaboration

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 very high energy (VHE) gamma-ray emission reported from a number of pulsar wind nebulae (PWNe) is naturally explained by the inverse Compton scattering of multi-TeV electrons. However, the physical dimensions of some gamma-ray-emitting…

High Energy Astrophysical Phenomena · Physics 2018-06-27 Dmitry Khangulyan , Alexander V. Koldoba , Galina V. Ustyugova , Sergey V. Bogovalov , Felix Aharonian

The excellent sensitivity and high resolution capability of wide FoV ground-based imaging atmospheric Cerenkov telescopes allow us for the first time to resolve the morphological structures of pulsar wind nebulae (PWN) which are older and…

Astrophysics · Physics 2007-05-23 O. C. de Jager , C. Venter

The high sensitivity of the Fermi-LAT (Large Area Telescope) offers the first opportunity to study faint and extended GeV sources such as pulsar wind nebulae (PWNe). After one year of observation the LAT detected and identified three pulsar…

High Energy Astrophysical Phenomena · Physics 2011-01-28 The Fermi LAT Collaboration , Pulsar Timing Consortium

Pulsar wind nebulae (PWNe), formed when the wind originating from a rapidly rotating neutron star flows out into its surroundings, have now been observed across the electromagnetic spectrum from the radio to the PeV gamma-ray regime. For…

High Energy Astrophysical Phenomena · Physics 2026-03-19 Alison M. W. Mitchell , Samuel T. Spencer

We propose that cosmic-ray PeVatrons are pulsar wind nebulae (PWNe) inside supernova remnants (SNRs). The PWN initially expands into the freely expanding stellar ejecta. Then, the PWN catches up with the shocked region of the SNR, where…

High Energy Astrophysical Phenomena · Physics 2018-06-08 Yutaka Ohira , Shota Kisaka , Ryo Yamazaki

Pulsar wind nebulae (PWNe) represent the largest class of sources that upcoming {\gamma}-ray surveys will detect. Therefore, accurate modelling of their global emission properties is one of the most urgent problems in high-energy…

High Energy Astrophysical Phenomena · Physics 2022-01-19 M. Fiori , B. Olmi , E. Amato , R. Bandiera , N. Bucciantini , L. Zampieri , A. Burtovoi

Many of the recently discovered TeV gamma-ray sources are associated with pulsar wind nebulae (PWNe). In fact, they represent the most populous class of Galactic sources at TeV energies. In addition, HESS has also discovered, in a survey of…

Astrophysics · Physics 2009-11-13 Chulhoon Chang , Alexander Konopelko , Wei Cui

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