Zobrazeno 1 - 10
of 347
pro vyhledávání: '"Rivoal, M."'
Autor:
Djannati-Atai, A., Khelifi, B., Vorobiov, S., Bazer-Bachi, R., Debiais, G., Degrange, B., Espigat, P., Fabre, B., Fontaine, G., Goret, P., Gouiffes, C., Masterson, C., Piron, F., Punch, M., Rivoal, M., Rob, L., Tavernet, J. -P.
Publikováno v:
Astron.Astrophys. 391 (2002) L25-28
The BL Lac Object 1ES 1426+428, at a red-shift of z=0.129, has been monitored by the CAT telescope from February 1998 to June 2000. The accumulation of 26 hours of observations shows a gamma-ray signal of 321 events above 250 GeV at 5.2 standard devi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0207618
Publikováno v:
Astropart.Phys. 17 (2002) 409-414
The KASKADE and CORSIKA air shower generators are compared to the data collected by MASS2 balloon experiment in 1991. The test of longitudinal profile for proton, helium and muon flux production provide good constraints on these air shower generators
Externí odkaz:
http://arxiv.org/abs/astro-ph/0205251
Autor:
Piron, F., Djannati-Atai, A., Punch, M., Tavernet, J. -P., Barrau, A., Bazer-Bachi, R., Chounet, L. -M., Debiais, G., Degrange, B., Dezalay, J. -P., Espigat, P., Fabre, B., Fleury, P., Fontaine, G., Goret, P., Gouiffes, C., Khelifi, B., Malet, I., Masterson, C., Mohanty, G., Nuss, E., Renault, C., Rivoal, M., Rob, L., Vorobiov, S.
Publikováno v:
Astron.Astrophys.374:895-906,2001
The gamma-ray emission above 250 GeV from the BL Lac object Markarian 421 was observed by the CAT Cherenkov imaging telescope between December, 1996, and June, 2000. In 1998, the source produced a series of small flares, making it the second extragal
Externí odkaz:
http://arxiv.org/abs/astro-ph/0106196
The TeV and X-ray data obtained by the imaging Cherenkov telescope CAT and X-ray satellite BeppoSAX during the remarkable flare of Mkn 501 in April 16, 1997 are used to constrain the flux of the Cosmic Infrared Background (CIB) using different CIB mo
Externí odkaz:
http://arxiv.org/abs/astro-ph/0004355
Autor:
Djannati-Atai, A., Piron, F., Barrau, A., Iacoucci, L., Punch, M., Tavernet, J. -P., Bazer-Bachi, R., Cabot, H., Chounet, L. -M., Debiais, G., Degrange, B., Dezalay, J. -P., Dumora, D., Espigat, P., Fabre, B., Fleury, P., Fontaine, G., Ghesquière, C., Goret, P., Gouiffes, C., Grenier, I. A., Bohec, S. Le, Malet, I., Meynadier, C., Mohanty, G., Nuss, E., Paré, E., Québert, J., Ragan, K., Renault, C., Rivoal, M., Rob, L., Schahmaneche, K., Smith, D. A.
Publikováno v:
Astron.Astrophys. 350 (1999) 17-24
The BL Lac object Mrk 501 went into a very high state of activity during 1997, both in VHE gamma-rays and X-rays. We present here results from observations at energies above 250 GeV carried out between March and October 1997 with the CAT Cerenkov ima
Externí odkaz:
http://arxiv.org/abs/astro-ph/9906060
Autor:
Bohec, S. Le, Degrange, B., Punch, M., Barrau, A., Bazer-Bachi, R., Cabot, H., Chounet, L. M, Debiais, G., Dezalay, J. P., Djannati-Atai, A., Dumora, D., Espigat, P., Fabre, B., Fleury, P., Fontaine, G., George, R., Ghesquiere, C., Goret, P., Gouiffes, C., Grenier, I. A., Iacoucci, L., Malet, I., Meynadier, C., Munz, F., Palfrey, T. A., Pare, E., Pons, Y., Quebert, J., Ragan, K., renault, C., Rivoal, M., Rob, L., Schovaneck, P., Smith, D., Tavernet, J. P., Vrana, J.
Publikováno v:
Nucl.Instrum.Meth. A416 (1998) 425-437
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
Externí odkaz:
http://arxiv.org/abs/astro-ph/9804133
Autor:
Barrau, A., Bazer-Bachi, R., Beyer, E., Cabot, H., Cerutti, M., Chounet, L. M., Debiais, G., Degrange, B., Delchini, H., Denance, J. P., Descotes, G., Dezalay, J. P., Djannati-Atai, A., Dumora, D., Espigat, P., Fabre, B., Fleury, P., Fontaine, G., George, R., Ghesquiere, C., Gilly, J., Goret, P., Gouiffes, C., Gouillaud, J. C., Gregory, C., Grenier, I. A., Iacoucci, L., Kalt, L., Bohec, S. Le, Malet, I., Meynadier, C., Mols, J. P., de Freitas, P. Mora, Morano, R., Morinaud, G., Munz, F., Palatka, M., Palfrey, T. A., Pare, E., Pons, Y., Punch, M., Quebert, J., Ragan, K., Renault, C., Rivoal, M., Rob, L., Schovanek, P., Smith, D., Tabary, A., Tavernet, J. P., Toussenel, F., Vrana, J.
Publikováno v:
Nucl.Instrum.Meth. A416 (1998) 278-292
The CAT (Cherenkov Array at Themis) imaging telescope, equipped with a very-high-definition camera (546 fast phototubes with 0.12 degrees spacing surrounded by 54 larger tubes in two guard rings) started operation in Autumn 1996 on the site of the fo
Externí odkaz:
http://arxiv.org/abs/astro-ph/9804046
Autor:
Barrau, A., Bazer-Bachi, R., Cabot, H., Chounet, L. M., Debiais, G., Degrange, B., Dezalay, J. P., Djannati-Atai, A., Dumora, D., Espigat, P., Fabre, B., Fleury, P., Fontaine, G., George, R., ghesquiere, C., Goret, P., Gouiffes, C., Grenier, I. A., Iacoucci, L., Bohec, S. Le, Malet, I., Meynadier, C., Munz, P., Palfrey, T. A., Pare, E., Pons, Y., Punch, M., Quebert, J., Ragan, K., Renault, C., Rivoal, M., Rob, L., Schovanek, P., Smith, D., Tavernet, J. P., Vrana, J.
The CAT Imaging Telescope has observed the BL Lac object Markarian 501 between March and August 1997. We report here on the variability over this time including several large flares. We present also preliminary spectra for all these data, for the low
Externí odkaz:
http://arxiv.org/abs/astro-ph/9710259
Autor:
Barrau, A., Bazer-Bachi, R., Cabot, H., Chounet, L. M., Debiais, G., Degrange, B., Dezalay, J. P., Djannati-Atai, A., Dumora, D., Espigat, P., Fabre, B., Fleury, P., Fontaine, G., George, R., Ghesquiere, C., Goret, P., Gouiffes, C., Grenier, I. A., Iacoucci, L., Bohec, S. Le, Malet, I., Meynadier, C., Munz, P., Palfrey, T. A., Pare, E., Pons, Y., Punch, M., Quebert, J., Ragan, K., Renault, C., Rivoal, M., Rob, L., Schovanek, P., Smith, D., Tavernet, J. P., Vrana, J.
The CAT imaging telesope, which uses the Atmospheric Cherenkov Technique to observe TeV gamma-ray sources, has been operating since September 1996. Located in southern France, it features a fine grained camera consisting of 546 PMT with a pixel size
Externí odkaz:
http://arxiv.org/abs/astro-ph/9710260
Autor:
Barrau, A., Bazer-Bachi, R., Cabot, H., Chounet, L. M., Debiais, G., Degrange, B., Dezalay, J. P., Djannati-Atai, A., Dumora, D., Espigat, P., Fabre, B., Fleury, P., Fontaine, G., George, R., Ghesquiere, C., Goret, P., Gouiffes, C., Grenier, I. A., Iacoucci, L., Bohec, S. Le, Mallet, I., Meynadier, C., Munz, F., Palfrey, T. A., Pare, E., Pons, Y., Punch, M., Quebert, J., Ragan, K., Renault, C., Rivoal, M., Rob, L., Schovanek, P., Smith, D., Tavernet, J. P., Vrana, J.
The CAT imaging telescope on the site on the former solar plant Themis has been observing gamma-rays from Mrk501 above 220 GeV in March and April 1997. This source is shown to be highly variable and the light curve is presented. The detected gamma-ra
Externí odkaz:
http://arxiv.org/abs/astro-ph/9705249