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In the last 25 years, a new generation of X-ray satellites imparted a significant leap forward in our knowledge of X-ray pulsars. The discovery of accreting and transitional millisecond pulsars proved that disk accretion can spin up a…

We observed the young pulsar J1357--6429 with the {\it Chandra} and {\it XMM-Newton} observatories. The pulsar spectrum fits well a combination of absorbed power-law model ($\Gamma=1.7\pm0.6$) and blackbody model ($kT=140^{+60}_{-40}$ eV,…

High Energy Astrophysical Phenomena · Physics 2015-05-28 Chulhoon Chang , George G. Pavlov , Oleg Kargaltsev , Yurii A. Shibanov

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

Context. Extended gamma-ray TeV emission (TeV halos) around middle-aged pulsars has been detected. A proposed model to explain these TeV halos is that electrons from a degree-wide Pulsar Wind Nebula (PWN) get up-scattered by cosmic…

High Energy Astrophysical Phenomena · Physics 2023-10-17 A. Khokhriakova , W. Becker , G. Ponti , M. Sasaki , B. Li , R. -Y. Liu

The recent detection of extended $\gamma$-ray emission around middle-aged pulsars is interpreted as inverse-Compton scattering of ambient photons by electron-positron pairs escaping the pulsar wind nebula, which are confined near the system…

High Energy Astrophysical Phenomena · Physics 2024-11-12 S. Abdollahi , F. Acero , A. Acharyya , A. Adelfio , M. Ajello , L. Baldini , J. Ballet , C. Bartolini , J. Becerra Gonzalez , R. Bellazzini , E. Bissaldi , R. Bonino , P. Bruel , R. A. Cameron , P. A. Caraveo , D. Castro , E. Cavazzuti , C. C. Cheung , N. Cibrario , S. Ciprini , G. Cozzolongo , P. Cristarella Orestano , A. Cuoco , S. Cutini , F. D'Ammando , N. Di Lalla , A. Dinesh , L. Di Venere , A. Domínguez , A. Fiori , S. Funk , P. Fusco , F. Gargano , C. Gasbarra , D. Gasparrini , S. Germani , F. Giacchino , N. Giglietto , M. Giliberti , F. Giordano , M. Giroletti , D. Green , I. A. Grenier , L. Guillemot , S. Guiriec , R. Gupta , M. Hashizume , E. Hays , J. W. Hewitt , D. Horan , X. Hou , T. Kayanoki , M. Kuss , A. Laviron , M. Lemoine-Goumard , A. Liguori , J. Li , I. Liodakis , P. Loizzo , F. Longo , F. Loparco , L. Lorusso , M. N. Lovellette , P. Lubrano , S. Maldera , D. Malyshev , G. Martí-Devesa , P. Martin , M. N. Mazziotta , I. Mereu , P. F. Michelson , N. Mirabal , W. Mitthumsiri , T. Mizuno , P. Monti-Guarnieri , M. E. Monzani , A. Morselli , I. V. Moskalenko , M. Negro , N. Omodei , M. Orienti , E. Orlando , D. Paneque , G. Panzarini , M. Persic , M. Pesce-Rollins , R. Pillera , T. A. Porter , S. Rainò , R. Rando , M. Razzano , A. Reimer , O. Reimer , M. Rocamora Bernal , M. Sánchez-Conde , P. M. Saz Parkinson , D. Serini , C. Sgrò , E. J. Siskind , D. A. Smith , G. Spandre , P. Spinelli , A. W. Strong , D. J. Suson , H. Tajima , J. B. Thayer , D. F. Torres , J. Valverde , Z. Wadiasingh , K. Wood , G. Zaharijas

Pulsar wind driven synchrotron nebulae are offering a unique view on the connection of the pulsar wind and the surrounding medium. The Crab nebula is particularly well suited for detailed studies of the different emission regions. As…

Astrophysics · Physics 2007-05-23 D. Horns , F. A. Aharonian

We consider nebulae which are created around binary systems containing rotation powered pulsars and companion stars with strong stellar winds. It is proposed that the stellar and pulsar winds have to mix at some distance from the binary…

High Energy Astrophysical Phenomena · Physics 2016-02-12 W. Bednarek , J. Sitarek

Pulsar Wind Nebulae (PWNe) represent the most prominent population of Galactic very-high-energy gamma-ray sources and are thought to be an efficient source of leptonic cosmic rays. Vela X is a nearby middle-aged PWN, which shows bright…

High Energy Astrophysical Phenomena · Physics 2019-07-10 H. E. S. S. Collaboration

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 H.E.S.S. array of imaging Cherenkov telescopes has discovered a number of previously unknown gamma-ray sources in the very high energy (VHE) domain above 100 GeV. The good angular resolution of H.E.S.S. (~0.1 degree per event), as well…

Astrophysics · Physics 2019-08-14 Yves A. Gallant

Several Pulsar Wind Nebulae (PWNe) have been detected in the TeV band in the last decade.The TeV emission is typically interpreted in a purely leptonic scenario, but this usually requires that the magnetic field in the Nebula be much lower…

High Energy Astrophysical Phenomena · Physics 2017-02-22 Irene Di Palma , Dafne Guetta , Elena Amato

We communicate the detection of soft (20--200 keV) gamma-rays from the pulsar and pulsar wind nebula of PSR J1846-0258 and aim to identify the component of the system which is responsible for the gamma-ray emission. To pinpoint the source…

Astrophysics · Physics 2009-11-13 V. A. McBride , A. J. Dean , A. Bazzano , A. J. Bird , A. B. Hill , A. De Rosa , R. Landi , V. Sguera , A. Malizia

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

The gamma-ray binaries LS 5039 and LS I +61 303 have been detected by Cerenkov telescopes at TeV energies, exhibiting periodic behavior correlated with the orbital period. These gamma-ray binary systems have also been recently detected by…

High Energy Astrophysical Phenomena · Physics 2010-08-04 Diego F. Torres

High-energy particle transport in pulsar wind nebulae (PWNe) plays an essential role in explaining the characteristics revealed in multiwavelength observations. In this paper, the TeV-gamma-ray-emitting electrons in the Vela X PWN are…

High Energy Astrophysical Phenomena · Physics 2019-07-04 Yiwei Bao , Siming Liu , Yang Chen

Extended gamma-ray emission around isolated pulsars at TeV energies, also known as TeV halos, have been found around a handful of middle-aged pulsars. The halos are significantly more extended than their pulsar wind nebulae but much smaller…

Recent studies suggest that pulsars could be strong sources of TeV muon neutrinos provided positive ions are accelerated by pulsar polar caps to PeV energies. In such a situation muon neutrinos are produced through the delta resonance in…

Astrophysics · Physics 2010-02-03 A. Bhadra , R. K. Dey

Gamma-ray observations have established energetic isolated pulsars as outstanding particle accelerators and antimatter factories in the Galaxy. There is, however, no consensus regarding the acceleration mechanisms and the radiative…

High Energy Astrophysical Phenomena · Physics 2023-10-11 The H. E. S. S. Collaboration , : , F. Aharonian , F. Ait Benkhali , J. Aschersleben , H. Ashkar , M. Backes , V. Barbosa Martins , R. Batzofin , Y. Becherini , D. Berge , K. Bernlöhr , B. Bi , M. Böttcher , C. Boisson , J. Bolmont , M. de Bony de Lavergne , J. Borowska , F. Bradascio , M. Breuhaus , R. Brose , F. Brun , B. Bruno , T. Bulik , C. Burger-Scheidlin , T. Bylund , F. Cangemi , S. Caroff , S. Casanova , J. Celic , M. Cerruti , T. Chand , S. Chandra , A. Chen , O. Chibueze , G. Cotter , J. Damascene Mbarubucyeye , A. Djannati-Ataï , A. Dmytriiev , K. Egberts , J. -P. Ernenwein , K. Feijen , A. Fiasson , G. Fichet de Clairfontaine , G. Fontaine , M. Füßling , S. Funk , S. Gabici , Y. A. Gallant , S. Ghafourizadeh , G. Giavitto , L. Giunti , D. Glawion , J. F. Glicenstein , P. Goswami , G. Grolleron , M. -H. Grondin , L. Haerer , M. Haupt , J. A. Hinton , W. Hofmann , T. L. Holch , M. Holler , D. Horns , Zhiqiu Huang , M. Jamrozy , F. Jankowsky , V. Joshi , I. Jung-Richardt , E. Kasai , K. Katarzyński , B. Khélifi , S. Klepser , W. Kluźniak , Nu. Komin , K. Kosack , D. Kostunin , R. G. Lang , S. Le Stum , A. Lemière , M. Lemoine-Goumard , J. -P. Lenain , F. Leuschner , T. Lohse , A. Luashvili , I. Lypova , J. Mackey , D. Malyshev , D. Malyshev , V. Marandon , P. Marchegiani , A. Marcowith , P. Marinos , G. Martí-Devesa , R. Marx , G. Maurin , M. Meyer , A. Mitchell , R. Moderski , L. Mohrmann , A. Montanari , E. Moulin , J. Muller , T. Murach , K. Nakashima , M. de Naurois , J. Niemiec , A. Priyana Noel , P. OBrien , S. Ohm , L. Olivera-Nieto , E. de Ona Wilhelmi , M. Ostrowski , S. Panny , M. Panter , R. D. Parsons , G. Peron , S. Pita , D. A. Prokhorov , H. Prokoph , G. Pühlhofer , M. Punch , A. Quirrenbach , P. Reichherzer , A. Reimer , O. Reimer , M. Renaud , F. Rieger , G. Rowell , B. Rudak , E. Ruiz-Velasco , V. Sahakian , S. Sailer , H. Salzmann , D. A. Sanchez , A. Santangelo , M. Sasaki , F. Schüssler , U. Schwanke , J. N. S. Shapopi , A. Sinha , H. Sol , A. Specovius , S. Spencer , M. Spir-Jacob , L. Stawarz , R. Steenkamp , S. Steinmassl , C. Steppa , I. Sushch , H. Suzuki , T. Takahashi , T. Tanaka , T. Tavernier , R. Terrier , C. Thorpe-Morgan , M. Tluczykont , M. Tsirou , N. Tsuji , C. van Eldik , M. Vecchi , J. Veh , C. Venter , J. Vink , S. J. Wagner , F. Werner , R. White , A. Wierzcholska , Yu Wun Wong , H. Yassin , M. Zacharias , D. Zargaryan , A. A. Zdziarski , A. Zech , S. J. Zhu , S. Zouari , N. Żywucka , R. Zanin , M. Kerr , S. Johnston , R. M. Shannon , D. A. Smith

A sub-population of energetic rotation-powered pulsars show high fluxes of pulsed non-thermal hard X-ray emission. While this MeV pulsar population includes some radio-loud pulsars like the Crab, a significant number have no detected radio…

High Energy Astrophysical Phenomena · Physics 2017-12-08 Alice K. Harding , Constantinos Kalapotharakos