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  Discovery of > 160 GeV gamma-rays from 1ES 1101-232 (z = 0.186) with H.E.S.S.

Tluczykont, M., Benbow, W., Costamante, L., Djannati-Atai, A., Dubus, G., Giebels, B., et al. (2005). Discovery of > 160 GeV gamma-rays from 1ES 1101-232 (z = 0.186) with H.E.S.S. In B. S. Acharya, S. Gupta, P. Jagadeesan, A. Jain, S. Karthikeyan, S. Morris, et al. (Eds.), Proceedings of the 29th International Cosmic Ray Conference (pp. 291-294). Navy Nagar, Colaba, Mumbai, MH-400005: Tata Institute of Fundamental Research.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-87A9-E Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-87AA-C
Genre: Conference Paper

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 Creators:
Tluczykont, M.1, Author
Benbow, W.2, Author           
Costamante, L.2, Author           
Djannati-Atai, A.2, Author           
Dubus, G.2, Author           
Giebels, B.1, Author
Lemoine-Goumard, M.1, Author
Ouchrif, M.1, Author
Pita, S.1, Author
Pühlhofer, G.2, Author           
M. Tluczykont for the H.E.S.S. Collaboration, Editor  
Affiliations:
1Laboratoire Leprince-Ringuet, IN2P3/CNRS, Ecole Polytechnique, Palaiseau, France Laboratoire de Physique Nucl´eaire et de Hautes Energies, IN2P3/CNRS, Universit´es de Paris VI & VII, France APC, Coll ege de France, Paris, France Landessternwarte, Koenigsstuhl, Heidelberg, Germany, ou_persistent22              
2Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550              

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Free keywords: Hess
 Abstract: The system of four H.E.S.S. (High Energy Stereoscopic System) atmospheric Cherenkov telescopes is complete and operational since December 2003. Since the commissioning of the experiment in June 2002, a considerable amount of observation time has been dedicated to observations and monitoring of active galactic nuclei (AGN). For several objects simultaneous observation campaigns were carried out in other wavelength bands. In addition to the understanding of the intrinsic acceleration mechanisms of these objects, the observations of AGN also provide an indirect measurement of the Extragalactic Background Light (EBL) via the absorption of very high energy (i.e. in the GeV/TeV energy regime) gamma-rays by e+e- pair production with EBL photons. To this end it is important to study spectra of AGN at different redshifts. To date, the redshifts of AGN detected at very high energies range from 0.004 to 0.129. Here we report on the detection(9 σ) of the BL Lac object 1ES 1101-232, at a redshift of z = 0.186, with the H.E.S.S. Cherenkov telescopes.

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Language(s): eng - English
 Dates: 2005-12
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 282104
 Degree: -

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Title: 29th International Cosmic Ray Conference
Place of Event: Pune, India
Start-/End Date: 2005-08-03 - 2005-08-10

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Title: Proceedings of the 29th International Cosmic Ray Conference
Source Genre: Proceedings
 Creator(s):
Acharya, B. Sripathi, Editor
Gupta, Sunil, Editor
Jagadeesan, P., Editor
Jain, Atul, Editor
Karthikeyan, S., Editor
Morris, Samuel, Editor
Tonwar, Suresh, Editor
Affiliations:
-
Publ. Info: Navy Nagar, Colaba, Mumbai, MH-400005 : Tata Institute of Fundamental Research
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 291 - 294 Identifier: -