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Featured researches published by C. Gouiffes.


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1998

A NEW ANALYSIS METHOD FOR VERY HIGH DEFINITION IMAGING ATMOSPHERIC CHERENKOV TELESCOPES AS APPLIED TO THE CAT TELESCOPE

S. Le Bohec; B. Degrange; M. Punch; A. Barrau; R. Bazer-Bachi; H. Cabot; L.M. Chounet; G. Debiais; J. P. Dezalay; A. Djannati-Ataı̈; D. Dumora; P. Espigat; B. Fabre; P. Fleury; G. Fontaine; R. George; C. Ghesquiere; P. Goret; C. Gouiffes; I. A. Grenier; L. Iacoucci; I. Malet; C. Meynadier; F. Munz; T. Palfrey; E. Pare; Y. Pons; J. Quebert; K. Ragan; C. Renault

Abstract A new method of shower-image analysis is presented which appears very powerful as applied to those Cherenkov Imaging Telescopes with very high definition imaging capability. It provides hadron rejection on the basis of a single cut on the image shape, and simultaneously determines the energy of the electromagnetic shower and the position of the shower axis with respect to the detector. The source location is also reconstructed for each individual γ-ray shower, even with one single telescope, so for a point source the hadron rejection can be further improved. As an example, this new method is applied to data from the CAT (Cherenkov Array at Themis) imaging telescope, which has been operational since Autumn, 1996.


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1998

The CAT imaging telescope for very high-energy gamma-ray astronomy

A. Barrau; R. Bazer-Bachi; E. Beyer; H. Cabot; M. Cerutti; L.M. Chounet; G. Debiais; B. Degrange; H. Delchini; J.P. Denance; G. Descotes; J.P. Dezalay; A. Djannati-Ataı̈; D. Dumora; P. Espigat; B. Fabre; P. Fleury; G. Fontaine; R. George; C. Ghesquière; J. Gilly; P. Goret; C. Gouiffes; J.C. Gouillaud; C. Grégory; I.A. Grenier; L. Iacoucci; L. Kalt; S. Le Bohec; I. Malet


Astronomy and Astrophysics | 1999

Very high-energy gamma-ray spectral properties of Mrk 501 from cat Cherenkov telescope observations in 1997

A. Djannati-Ataï; F. Piron; Aurelien Barrau; L. Iacoucci; M. Punch; J-P. Tavernet; R. Bazer-Bachi; H. Cabot; L.-M. Chounet; G. Debiais; B. Degrange; J-P. Dezalay; D. Dumora; P. Espigat; B. Fabre; Pascal Fleury; G. Fontaine; C. Ghesquiere; P. Goret; C. Gouiffes; I-A. Grenier; S. Le Bohec; I. Malet; C. Meynadier; G. Mohanty; E. Nuss; E. Pare; J. Quebert; K. Ragan; C. Renault


High Energy Blazar Astronomy | 2002

TeV observations of BL lacs objects with the CAT Cherenkov telescope

B. Khelifi; A. Barrau; R. Bazer-Bachi; L.-M. Chounet; G. Debiais; B. Degrange; J-P. Dezalay; A. Djannati-Ataï; P. Espigat; B. Fabre; Pascal Fleury; G. Fontaine; P. Goret; C. Gouiffes; I. Malet; C. Masterson; G. Mohanty; E. Nuss; F. Piron; M. Punch; C. Renault; M. Rivoal; L. Rob; J-P. Tavernet; S. Vorobiov


Archive | 2001

TeV gamma ray observations of Shell-type Supernova remnants by the CAT telescope (1999-2001)

B. Khélifi; Aurelien Barrau; R. Bazer-Bachi; L.-M. Chounet; G. Debiais; B. Degrange; J-P. Dezalay; A. Djannati-Ataie; P. Espigat; Benoit Fabre; Pascal Fleury; G. Fontaine; P. Goret; C. Gouiffes; I. Malet; C. Masterson; G. Mohanty; E. Nuss; M. Punch; C. Renault; M. Rivoal; L. Rob; J.-P. Tavernet; Serguei Vorobiov


Archive | 2001

Temporal and spectral Gamma-ray properties above 250 GeV of Mkn 421 from CAT observations (1998-2001)

F. Piron; A. Djannati-Ataï; M. Punch; J.-P. Tavernet; Aurelien Barrau; R. Bazer-Bachi; L.-M. Chounet; G. Debiais; B. Degrange; J-P. Dezalay; P. Espigat; Benoit Fabre; Pascal Fleury; G. Fontaine; P. Goret; C. Gouiffes; B. Khélifi; I. Malet; C. Masterson; G. Mohanty; E. Nuss; C. Renault; M. Rivoal; L. Rob; Serguei Vorobiov


arXiv: Astrophysics | 1999

Observations of gamma-ray emission from the blazar Markarian 421 above 250 GeV with the CAT cherenkov imaging telescope

F. Piron; R. Bazer-Bachi; L.-M. Chounet; G. Debiais; B. Degrange; J-P. Dezalay; A. Djannati-Ataï; P. Espigat; B. Fabre; Pascal Fleury; G. Fontaine; P. Goret; C. Gouiffes; I-A. Grenier; L. Iacoucci; I. Malet; G. Mohanty; X. Moreau; A. Musquere; E. Nuss; J.-F. Olive; M. Punch; K. Ragan; C. Renault; M. Rivoal; L. Rob; K. Schahmaneche; J-P. Tavernet


arXiv: Astrophysics | 1999

VHE spectral properties of Mrk 501 with the CAT telescope

J-P. Tavernet; R. Bazer-Bachi; L.-M. Chounet; G. Debiais; B. Degrange; J-P. Dezalay; A. Djannati-Ataï; P. Espigat; B. Fabre; Pascal Fleury; G. Fontaine; P. Goret; C. Gouiffes; I-A. Grenier; L. Iacoucci; I. Malet; G. Mohanty; X. Moreau; A. Musquere; E. Nuss; J.-F. Olive; F. Piron; M. Punch; K. Ragan; C. Renault; M. Rivoal; L. Rob; K. Schahmaneche


arXiv: Astrophysics | 1999

Search for >= 400 GeV gamma-rays from the SNR Cas A

P. Goret; C. Gouiffes; E. Nuss; Donald Charles Ellison


International Cosmic Ray Conference 26 | 1999

Search for VHE gamma-ray emission of selected BL lac objects with the CAT telescope

F. Piron; R. Bazer-Bachi; L.-M. Chounet; G. Debiais; B. Degrange; J-P. Dezalay; A. Djannati-Ataï; P. Espigat; B. Fabre; Pascal Fleury; G. Fontaine; P. Goret; C. Gouiffes; I-A. Grenier; L. Iacoucci; I. Malet; G. Mohanty; X. Moreau; A. Musquere; E. Nuss; J.-F. Olive; M. Punch; K. Ragan; C. Renault; M. Rivoal; L. Rob; K. Schahmaneche; J-P. Tavernet

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R. Bazer-Bachi

Centre national de la recherche scientifique

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B. Fabre

University of Perpignan

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H. Cabot

University of Perpignan

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