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Detection of Gamma-Ray Emission from the Vela Pulsar Wind Nebula with AGILE


Pellizzoni, A and Trois, A and Tavani, M and Pilia, M and Giuliani, A and Pucella, G and Esposito, P and Sabatini, S and Piano, G and Argan, A and Barbiellini, G and Bulgarelli, A and Burgay, M and Caraveo, P and Cattaneo, PW and Chen, AW and Cocco, V and Contessi, T and Costa, E and D'Ammando, F and Del Monte, E and De Paris, G and Di Cocco, G and Di Persio, G and Donnarumma, I and Evangelista, Y and Feroci, M and Ferrari, A and Fiorini, M and Fuschino, F and Galli, M and Gianotti, F and Hotan, A and Labanti, C and Lapshov, I and Lazzarotto, F and Lipari, P and Longo, F and Marisaldi, M and Mastropietro, M and Mereghetti, S and Moretti, E and Morselli, A and Pacciani, L and Palfreyman, J and Perotti, F and Picozza, F and Pittori, C and Possenti, A and Prest, M and Rapisarda, M, Detection of Gamma-Ray Emission from the Vela Pulsar Wind Nebula with AGILE, Science, 327, (5 February) pp. 663-665. ISSN 0036-8075 (2010) [Refereed Article]

DOI: doi:10.1126/science.1183844


Pulsars are known to power winds of relativistic particles that can produce bright nebulae by interacting with the surrounding medium. These pulsar wind nebulae are observed by their radio, optical, and x-ray emissions, and in some cases also at TeV (teraelectron volt) energies, but the lack of information in the gamma-ray band precludes drawing a comprehensive multiwavelength picture of their phenomenology and emission mechanisms. Using data from the AGILE satellite, we detected the Vela pulsar wind nebula in the energy range from 100 MeV to 3 GeV. This result constrains the particle population responsible for the GeV emission and establishes a class of gamma-ray emitters that could account for a fraction of the unidentified galactic gamma-ray sources.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Cosmology and extragalactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Palfreyman, J (Dr Jim Palfreyman)
ID Code:70273
Year Published:2010
Web of Science® Times Cited:33
Deposited By:Mathematics and Physics
Deposited On:2011-06-14
Last Modified:2012-07-04

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