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Discovery of two candidate pulsar wind nebulae in very-high-energy gamma rays

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posted on 2012-10-24, 09:09 authored by F. Aharonian, W. Benbow, D. Berge, K. Bernlöhr, O. Bolz, I. Braun, R. Bühler, S. Carrigan, L. Costamante, W. Domainko, K. Egberts, M. Beilicke, R. Cornils, G. Heinzelmann, M. Holleran, M. Raue, J. Ripken, S. Funk, K. J. Orford, M. Füßling, G. Dubus, M. Kerschhaggl, T. Lohse, S. Schlenker, U. Schwanke, De Jager OC, C. Boisson, J. M. Martin, H. Sol, E. Brion, J. F. Glicenstein, G. Fontaine, J. L. Osborne, P. Goret, E. Moulin, L. Rolland, A. M. Brown, B. C. Raubenheimer, P. M. Chadwick, H. J. Dickinson, C. Hadjichristidis, I. J. Latham, B. Giebels, Le Gallou R, T. J. L. McComb, S. M. Rayner, S. J. Nolan, D. Spangler, M. Ward, P. H. Tam, I. Büsching, C. Venter, L. -. M. Chounet, N. Komin, B. Degrange, B. Khélifi, M. Lemoine-Goumard, G. Superina, M. Tluczykont, S. J. Wagner, G. Coignet, T. Boutelier, G. Lamanna, S. Ranchon, S. Rosier-Lees, J. P. Vialle, A. Marcowith, A. Djannati-Ataï, P. Espigat, A. Lemière, G. Maurin, S. Pita, G. Henri, C. Farnier, M. Punch, R. Terrier, L. O. Drury, B. Behera, D. Emmanoulopoulos, M. Häuser, J. A. Hinton, G. Pelletier, G. Pedaletti, G. Pühlhofer, F. Feinstein, S. Schwemmer, A. Fiasson, Y. A. Gallant, A. Förster, A. Jacholkowska, G. Vasileiadis, B. Glück, C. Stegmann, P. -. O. Petrucci, L. Saugé, A. Hoffmann, D. Horns, E. Kendziorra, A. G. Akhperjanian, A. Santangelo, S. Schwarzburg, O. Martineau-Huynh, De Naurois M, K. Kosack, J. -. P. Tavernet, P. Vincent, D. Nedbal, L. Rob, J. Ruppel, V. Sahakian, D. Häuser, R. Schlickeiser, R. Schröder, A. Shalchi, R. Steenkamp, C. Masterson, A. R. Bazer-Bachi, G. Rowell, G. Hermann, W. Hofmann, M. Panter, S. Hoppe, Van Eldik C, A. Noutsos, H. J. Volk, V. Borrel, J. -. P. Olive
Context.We present the discovery of two very-high-energy $\gamma$-ray sources in an ongoing systematic search for emission above 100 GeV from pulsar wind nebulae in survey data from the HESS telescope array. Aims.Imaging Atmospheric Cherenkov Telescopes are ideal tools for searching for extended emission from pulsar wind nebulae in the very-high-energy regime. HESS, with its large field of view of 5$^{\circ}$ and high sensitivity, gives new prospects for the search for these objects. Methods.An ongoing systematic search for very-high-energy emission from energetic pulsars over the region of the Galactic plane between $-60^\circ < l < 30^\circ$, $-2^\circ < b < 2^\circ$ is performed. For the resulting candidates, the standard HESS analysis was applied and a search for multi-wavelength counterparts was performed. Results. We present the discovery of two new candidate $\gamma$-ray pulsar wind nebulae, HESS J1718-385 and HESS J1809-193. Conclusions.HESS has proven to be a suitable instrument for pulsar wind nebula searches.

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Citation

Astronomy & Astrophysics, 2007, 472 (2), pp. 489-495

Version

  • VoR (Version of Record)

Published in

Astronomy & Astrophysics

Publisher

EDP Sciences for European Southern Observatory (ESO)

issn

0004-6361

eissn

1432-0746

Copyright date

2007

Available date

2012-10-24

Publisher version

http://www.aanda.org/articles/aa/abs/2007/35/aa7280-07/aa7280-07.html

Language

en

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