Related papers: Rotationally-driven VHE emission from the Vela pul…

The first detection of a pulsar with ALMA

Pulsars are neutron stars, stellar corpses left over after supernova explosions of stars about ten times as massive as our Sun, with densities comparable to the atomic nucleus', spinning with periods from few milliseconds up to few seconds,…

High Energy Astrophysical Phenomena · Physics 2018-02-21 Roberto P. Mignani , Rosita Paladino , Bronek Rudak , Anna Zajczyk , Alessandro Corongiu , Andrea de Luca , Wolfgang Hummel , Andrea Possenti , Ulrich Geppert , Marta Burgay , Gianni Marconi

The Multi-Component Nature of the Vela Pulsar Nonthermal X-ray Spectrum

We report on our analysis of a 274 ks observation of the Vela pulsar with the Rossi X-Ray Timing Explorer (RXTE). The double-peaked, pulsed emission at 2 - 30 keV, which we had previously detected during a 93 ks observation, is confirmed…

Astrophysics · Physics 2009-11-07 Alice K. Harding , Mark S. Strickman , Carl Gwinn , Peter McCulloch , David Moffet

TeV Gamma-rays from the Northern Sky Pulsar Wind Nebulae

We estimate the TeV gamma-ray fluxes expected from the population of young pulsars in terms of the self-consistent time dependent hadronic-leptonic model for the high energy processes inside the pulsar wind nebulae. This radiation model…

Astrophysics · Physics 2009-11-13 W. Bednarek , M. Bartosik

Search for Extended GeV Sources in the Inner Galactic Plane

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

Spectral features in gamma-rays expected from millisecond pulsars

In the advent of next generation gamma-ray missions, we present general properties of spectral features of high-energy emission above $1\MeV$ expected for a class of millisecond, low magnetic field ($\sim 10^9\G$) pulsars. We extend…

Astrophysics · Physics 2009-10-31 T. Bulik , B. Rudak , J. Dyks

On the TeV Halo Fraction in gamma-ray bright Pulsar Wind Nebulae

The discovery of extended TeV emission around the Geminga and PSR B0656+14 pulsars, with properties consistent with free particle propagation in the interstellar medium (ISM), has sparked considerable discussion on the possible presence of…

High Energy Astrophysical Phenomena · Physics 2020-04-29 G. Giacinti , A. M. W. Mitchell , R. López-Coto , V. Joshi , R. D. Parsons , J. A. Hinton

Detection of very-high-energy gamma-ray emission from the vicinity of PSR B1706-44 and G343.1-2.3 with H.E.S.S

The gamma-ray pulsar PSR B1706-44 and the adjacent supernova remnant (SNR) candidate G343.1-2.3 were observed by H.E.S.S. during a dedicated observation campaign in 2007. As a result of this observation campaign, a new source of…

High Energy Astrophysical Phenomena · Physics 2015-05-27 H. E. S. S. Collaboration , : , A. Abramowski , F. Acero , F. Aharonian , A. G. Akhperjanian , G. Anton , A. Barnacka , U. Barres de Almeida , A. R. Bazer-Bachi , Y. Becherini , J. Becker , B. Behera , K. Bernlöhr , A. Bochow , C. Boisson , J. Bolmont , P. Bordas , V. Borrel , J. Brucker , F. Brun , P. Brun , T. Bulik , I. Büsching , S. Carrigan , S. Casanova , M. Cerruti , P. M. Chadwick , A. Charbonnier , R. C. G. Chaves , A. Cheesebrough , J. Conrad , L. -M. Chounet , A. C. Clapson , G. Coignet , M. Dalton , M. K. Daniel , I. D. Davids , B. Degrange , C. Deil , H. J. Dickinson , A. Djannati-Ataï , W. Domainko , L. O'C. Drury , F. Dubois , G. Dubus , J. Dyks , M. Dyrda , K. Egberts , P. Eger , P. Espigat , L. Fallon , C. Farnier , S. Fegan , F. Feinstein , M. V. Fernandes , A. Fiasson , A. Förster , G. Fontaine , M. Füßling , S. Gabici , Y. A. Gallant , H. Gast , L. Gérard , D. Gerbig , B. Giebels , J. F. Glicenstein , B. Glück , P. Goret , D. Göring , J. D. Hague , D. Hampf , M. Hauser , S. Heinz , G. Heinzelmann , G. Henri , G. Hermann , J. A. Hinton , A. Hoffmann , W. Hofmann , P. Hofverberg , M. Holleran , S. Hoppe , D. Horns , A. Jacholkowska , O. C. de Jager , C. Jahn , M. Jamrozy , I. Jung , M. A. Kastendieck , K. Katarzyński , U. Katz , S. Kaufmann , M. Kerschhaggl , D. Khangulyan , B. Khélifi , D. Keogh , W. Kluźniak , T. Kneiske , Nu. Komin , K. Kosack , R. Kossakowski , H. Laffont , G. Lamanna , M. Lemoine-Goumard , J. -P. Lenain , D. Lennarz , T. Lohse , A. Lopatin , C. -C. Lu , V. Marandon , A. Marcowith , J. Masbou , D. Maurin , N. Maxted , T. J. L. McComb , M. C. Medina , J. Méhault , R. Moderski , E. Moulin , M. Naumann-Godo , M. de Naurois , D. Nedbal , D. Nekrassov , N. Nguyen , B. Nicholas , J. Niemiec , S. J. Nolan , S. Ohm , J-F. Olive , E. de Oña Wilhelmi , B. Opitz , M. Ostrowski , M. Panter , M. Paz Arribas , G. Pedaletti , G. Pelletier , P. -O. Petrucci , S. Pita , G. Pühlhofer , M. Punch , A. Quirrenbach , M. Raue , S. M. Rayner , A. Reimer , O. Reimer , M. Renaud , R. de los Reyes , F. Rieger , J. Ripken , L. Rob , S. Rosier-Lees , G. Rowell , B. Rudak , C. B. Rulten , J. Ruppel , F. Ryde , V. Sahakian , A. Santangelo , R. Schlickeiser , F. M. Schöck , A. Schönwald , U. Schwanke , S. Schwarzburg , S. Schwemmer , A. Shalchi , I. Sushch , M. Sikora , J. L. Skilton , H. Sol , G. Spengler , Ł. Stawarz , R. Steenkamp , C. Stegmann , F. Stinzing , A. Szostek , P. H. Tam , J. -P. Tavernet , R. Terrier , O. Tibolla , M. Tluczykont , K. Valerius , C. van Eldik , G. Vasileiadis , C. Venter , J. P. Vialle , A. Viana , P. Vincent , M. Vivier , H. J. Völk , F. Volpe , S. Vorobiov , S. J. Wagner , M. Ward , A. Wierzcholska , A. Zajczyk , A. A. Zdziarski , A. Zech , H. -S. Zechlin , G. Dubner , E. Giacani

H.E.S.S. detection of the PSR J0855-4644 nebula

HESS J0852-463 is a TeV {\gamma}-ray source located in the Galactic plane. The region consists of a supernova remnant (SNR, RX J0852.0-4622) with a shell-like morphology, commonly referred to as Vela Junior, and a pulsar denoted PSR…

High Energy Astrophysical Phenomena · Physics 2026-02-17 F. Aharonian , H. Ashkar , M. Backes , R. Batzofin , Y. Becherini , D. Berge , K. Bernlöhr , M. Böttcher , C. Boisson , J. Bolmont , F. Brun , B. Bruno , C. Burger-Scheidlin , T. Bylund , S. Casanova , D. Cecchin Momesso , J. Celic , M. Cerruti , A. Chen , M. Chernyakova , J. O. Chibueze , O. Chibueze , B. Cornejo , G. Cotter , G. Cozzolongo , J. de Assis Scarpin , M. de Bony de Lavergne , M. de Naurois , E. de Oña Wilhelmi , A. G. Delgado Giler , J. Devin , A. Dmytriiev , K. Egberts , K. Egg , J. -P. Ernenwein , C. Escañuela Nieves , P. Fauverge , K. Feijen , M. D. Filipovic , G. Fontaine , S. Funk , S. Gabici , Y. A. Gallant , M. Genaro , J. F. Glicenstein , J. Glombitza , P. Goswami , M. -H. Grondin , L. Heckmann , B. Heß , W. Hofmann , T. L. Holch , M. Holler , D. Horns , M. Jamrozy , F. Jankowsky , A. Jardin-Blicq , I. Jaroschewski , D. Jimeno , I. Jung-Richardt , E. Kasai , K. Katarzyński , D. Kerszberg , B. Khélifi , W. Kluźniak , N. Komin , K. Kosack , D. Kostunin , R. G. Lang , S. Lazarević , A. Lemière , M. Lemoine-Goumard , J. -P. Lenain , P. Liniewicz , A. Luashvili , J. Mackey , D. Malyshev , D. Malyshev , V. Marandon , M. G. F. Mayer , A. Mehta , A. M. W. Mitchell , R. Moderski , L. Mohrmann , E. Moulin , J. Niemiec , P. O'Brien , L. Olivera-Nieto , M. O. Moghadam , S. Panny , M. Panter , R. D. Parsons , P. Pichard , T. Preis , G. Pühlhofer , M. Punch , A. Quirrenbach , A. Reimer , O. Reimer , I. Reis , Q. Remy , H. X. Ren , B. Reville , F. Rieger , G. Rowell , B. Rudak , K. Sabri , V. Sahakian , M. Sasaki , F. Schüssler , J. N. S. Shapopi , W. Si Said , Ł. Stawarz , R. Steenkamp , S. Steinmassl , T. Tanaka , A. M. Taylor , G. L. Taylor , R. Terrier , Y. Tian , M. Tsirou , T. Unbehaunz , C. van Eldik , M. Vecchi , C. Venter , J. Vink , V. Voitsekhovskyi , T. Wach , S. J. Wagner , A. Wierzcholska , M. Zacharias , A. Zech , W. Zhong , F. Acero , L. Giunti

Study of maximum electron energy of sub-PeV pulsar wind nebulae by multiwavelength modelling

Recently, the Large High Altitude Air Shower Observatory (LHAASO) reported the discovery of 12 ultrahigh-energy (UHE; $\mathrm{\varepsilon} \ge 100$ TeV) gamma-ray sources located in the Galactic plane. A few of these UHE gamma-ray emitting…

High Energy Astrophysical Phenomena · Physics 2023-02-22 Jagdish C. Joshi , Shuta J. Tanaka , Luis Salvador Miranda , Soebur Razzaque

TeV lightcurve of PSR B1259-63/SS2883

The inverse Compton scattering of ultrarelativistic electrons accelerated at the pulsar wind termination shock is believed to be responsible for TeV gamma-ray signal recently reported from the binary system PSR B1259-63/SS2883. While this…

Astrophysics · Physics 2009-11-11 Dmitry Khangulyan , Slavomir Hnatic , Felix Aharonian , Sergey Bogovalov

TeV Gamma Rays From Galactic Center Pulsars

Measurements of the nearby pulsars Geminga and B0656+14 by the HAWC and Milagro telescopes have revealed the presence of bright TeV-emitting halos surrounding these objects. If young and middle-aged pulsars near the Galactic Center transfer…

High Energy Astrophysical Phenomena · Physics 2017-12-12 Dan Hooper , Ilias Cholis , Tim Linden

Identification of HESS J1303-631 as a Pulsar Wind Nebula through gamma-ray, X-ray and radio observations

The previously unidentified very high-energy (VHE; E > 100 GeV) \gamma-ray source HESS J1303-631, discovered in 2004, is re-examined including new data from the H.E.S.S. Cherenkov telescope array. Archival data from the XMM-Newton X-ray…

High Energy Astrophysical Phenomena · Physics 2012-10-26 The H. E. S. S. Collaboration , : , A. Abramowski , F. Acero , F. Aharonian , A. G. Akhperjanian , G. Anton , S. Balenderan , A. Balzer , A. Barnacka , Y. Becherini , J. Becker , K. Bernlöhr , E. Birsin , J. Biteau , A. Bochow , C. Boisson , J. Bolmont , P. Bordas , J. Brucker , F. Brun , P. Brun , T. Bulik , I. Büsching , S. Carrigan , S. Casanova , M. Cerruti , P. M. Chadwick , A. Charbonnier , R. C. G. Chaves , A. Cheesebrough , G. Cologna , J. Conrad , C. Couturier , M. Dalton , M. K. Daniel , I. D. Davids , B. Degrange , C. Deil , H. J. Dickinson , A. Djannati-Ataï , W. Domainko , L. O'C. Drury , G. Dubus , K. Dutson , J. Dyks , M. Dyrda , K. Egberts , P. Eger , P. Espigat , L. Fallon , C. Farnier , S. Fegan , F. Feinstein , M. V. Fernandes , A. Fiasson , G. Fontaine , A. Förster , M. Füßling , M. Gajdus , Y. A. Gallant , T. Garrigoux , H. Gast , L. Gérard , B. Giebels , J. F. Glicenstein , B. Glück , D. Göring , M. -H. Grondin , S. Häffner , J. D. Hague , J. Hahn , D. Hampf , J. Harris , M. Hauser , S. Heinz , G. Heinzelmann , G. Henri , G. Hermann , A. Hillert , J. A. Hinton , W. Hofmann , P. Hofverberg , M. Holler , D. Horns , A. Jacholkowska , C. Jahn , M. Jamrozy , I. Jung , M. A. Kastendieck , K. Katarzyński , U. Katz , S. Kaufmann , B. Khélifi , D. Klochkov , W. Kluźniak , T. Kneiske , Nu. Komin , K. Kosack , R. Kossakowski , F. Krayzel , H. Laffon , G. Lamanna , J. -P. Lenain , D. Lennarz , T. Lohse , A. Lopatin , C. -C. Lu , V. Marandon , A. Marcowith , J. Masbou , G. Maurin , N. Maxted , M. Mayer , T. J. L. McComb , M. C. Medina , J. Méhault , U. Menzler , R. Moderski , M. Mohamed , E. Moulin , C. L. Naumann , M. Naumann-Godo , M. de Naurois , D. Nedbal , D. Nekrassov , N. Nguyen , B. Nicholas , J. Niemiec , S. J. Nolan , S. Ohm , E. de Oña Wilhelmi , B. Opitz , M. Ostrowski , I. Oya , M. Panter , M. Paz Arribas , N. W. Pekeur , G. Pelletier , J. Perez , P. -O. Petrucci , B. Peyaud , S. Pita , G. Pühlhofer , M. Punch , A. Quirrenbach , M. Raue , A. Reimer , O. Reimer , M. Renaud , R. de los Reyes , F. Rieger , J. Ripken , L. Rob , S. Rosier-Lees , G. Rowell , B. Rudak , C. B. Rulten , V. Sahakian , D. A. Sanchez , A. Santangelo , R. Schlickeiser , A. Schulz , U. Schwanke , S. Schwarzburg , S. Schwemmer , F. Sheidaei , J. L. Skilton , H. Sol , G. Spengler , Ł. Stawarz , R. Steenkamp , C. Stegmann , F. Stinzing , K. Stycz , I. Sushch , A. Szostek , J. -P. Tavernet , R. Terrier , M. Tluczykont , K. Valerius , C. van Eldik , G. Vasileiadis , C. Venter , A. Viana , P. Vincent , H. J. Völk , F. Volpe , S. Vorobiov , M. Vorster , S. J. Wagner , M. Ward , R. White , A. Wierzcholska , M. Zacharias , A. Zajczyk , A. A. Zdziarski , A. Zech , H. -S. Zechlin

A synchrotron self-Compton model for the VHE gamma-ray emission from Cen A

The H.E.S.S. experiment has reported the detection of very high energy (VHE: E>100 GeV) gamma-ray emission from the well-known radio-galaxy Cen A. Following this discovery, we refine the previous multi-blob synchrotron self-Compton (SSC)…

High Energy Astrophysical Phenomena · Physics 2009-07-15 J. -P. Lenain , M. C. Medina , C. Boisson , G. E. Romero , H. Sol , A. Zech

Inefficient cosmic ray diffusion around Vela X : constraints from H.E.S.S. observations of very high-energy electrons

Vela X is a nearby pulsar wind nebula (PWN) powered by a $\sim 10^4$ year old pulsar. Modeling of the spectral energy distribution of the Vela X PWN has shown that accelerated electrons have largely escaped from the confinement, which is…

High Energy Astrophysical Phenomena · Physics 2018-10-31 Zhi-Qiu Huang , Kun Fang , Ruo-Yu Liu , Xiang-Yu Wang

The Vela Pulsar in the Ultraviolet

We describe time-tagged observations of the Vela pulsar (PSR B0833-45) with the HST STIS MAMA-UV detectors. Using an optimal extraction technique, we obtain a NUV light curve and crude FUV phase-resolved spectra. The pulse is dominated by…

Astrophysics · Physics 2009-11-10 Roger W. Romani , Oleg Kargaltsev , George G. Pavlov

Outer-magnetospheric model for Vela-like pulsars:formation of sub-GeV spectrum

We investigate the $\gamma$-ray emission from a outer-gap accelerator, which is located in the outer-magnetosphere of a pulsar. The charge depletion from the Goldreich-Julian density causes a large electric field along the magnetic field…

Astrophysics · Physics 2009-11-10 J. Takata , S. Shibata , K. Hirtotani

Particle Acceleration and Non-Thermal Emission in Pulsar Outer Magnetospheric Gap

A two-dimensional electrodynamic model is used to study particle acceleration and non-thermal emission mechanisms in the pulsar magnetospheres. We solve distribution of the accelerating electric field with the emission process and the…

Astrophysics · Physics 2009-11-13 J. Takata , H. -K. Chang , S. Shibata

The Vela and Geminga pulsars in the mid-infrared

The Vela and Geminga pulsars are rotation powered neutron stars, which have been identified in various spectral domains, from the near-infrared to hard $\gamma$-rays. In the near-infrared they exhibit tentative emission excesses, as…

Solar and Stellar Astrophysics · Physics 2011-11-16 Andrey A. Danilenko , Dmitry A. Zyuzin , Yuri A. Shibanov , Sergey V. Zharikov

Hadronic Origin of Sub-PeV Gamma-Ray Emission from LHAASO J0621+3755

Very High Energy (VHE) gamma-rays in pulsars, and their surrounding halos, are interpreted to originate from the leptonic channel, electromagnetic interactions through electron inverse Compton (IC) scattering. In the hadronic scenario,…

High Energy Astrophysical Phenomena · Physics 2026-05-18 Sonali Sahoo , Ankan Roy , Kritika Yadav , Reetanjali Moharana

Very high energy gamma rays from the composite SNR G0.9+0.1

Very high energy (> 100 GeV) gamma-ray emission has been detected for the first time from the composite supernova remnant G0.9+0.1 using the H.E.S.S. instrument. The source is detected with a significance of 13 sigma, and a photon flux…

Astrophysics · Physics 2012-08-27 H. E. S. S. Collaboration , : , F. Aharonian