Zobrazeno 1 - 10
of 436
pro vyhledávání: '"Lessard R"'
We present a new method of image cleaning for imaging atmospheric Cherenkov telescopes. The method is based on the utilization of wavelets to identify noise pixels in images of gamma-ray and hadronic induced air showers. This method selects more sign
Externí odkaz:
http://arxiv.org/abs/astro-ph/0110033
Publikováno v:
Astropart.Phys.15:1-18,2001
We present a method of atmospheric Cherenkov imaging which reconstructs the unique arrival direction of TeV gamma rays using a single telescope. The method is derived empirically and utilizes several features of gamma-ray induced air showers which de
Externí odkaz:
http://arxiv.org/abs/astro-ph/0005468
Autor:
LeBohec, S., Bond, I. H., Bradbury, S. M., Buckley, J. H., Burdett, A. M., Carter-Lewis, D. A., Catanese, M., Cawley, M. F., Dunlea, S., D'Vali, M., Fegan, D. J., Fegan, S. J., Finley, J. P., Gaidos, J. A., Hall, T. A., Hillas, A. M., Horan, D., Knapp, J., Krennrich, F., Lessard, R. W., Macomb, D., Masterson, C., Quinn, J., Rose, H. J., Samuelson, F. W., Sembroski, G. H., Vassiliev, V. V., Weekes, T. C.
Publikováno v:
Astrophys.J. 539 (2000) 209-215
In 1998 and 1999 the Whipple Observatory 10 m telescope was used to search for diffuse gamma ray emission from the Galactic Plane. No signifiant evidence of emission was found. Assuming the TeV emission profile matches EGRET observations above 1 GeV
Externí odkaz:
http://arxiv.org/abs/astro-ph/0003265
Autor:
Lessard, R. W., Bond, I. H., Bradbury, S. M., Buckley, J. H., Burdett, A. M., Carter-Lewis, D. A., Catanese, M., Cawley, M. F., D'Vali, M., Fegan, D. J., Finley, J. P., Gaidos, J. A., Gillanders, G. H., Hall, T., Hillas, A. M., Krennrich, F., Lang, M. J., Masterson, C., Moriarty, P., Quinn, J., Rose, H. J., Samuelson, F. W., Sembroski, G. H., Srinivasan, R., Vassiliev, V. V., Weekes, T. C.
We present the results of a search for pulsed TeV emission from the Crab pulsar using the Whipple Observatory's 10 m gamma-ray telescope. The direction of the Crab pulsar was observed for a total of 73.4 hours between 1994 November and 1997 March. Du
Externí odkaz:
http://arxiv.org/abs/astro-ph/9912520
Autor:
Vassiliev, V. V., Carter-Lewis, D. A., Hillas, A. M., Kertzman, M. P., Knapp, J., Krennrich, F., Lessard, R. W., Rose, H. J., Sembroski, G. H.
VERITAS is a proposed major ground-based gamma-ray observatory to be built at the Whipple Observatory in southern Arizona, USA. It will consist of an array of seven 10m imaging Cherenkov telescopes designed to conduct gamma-ray observations in the en
Externí odkaz:
http://arxiv.org/abs/astro-ph/9908135
Autor:
D'Vali, M., Bond, I. H., Bradbury, S. M., Buckley, J. H., Burdett, A. M., Carter-Lewis, D. A., Catanese, M., Cawley, M. F., Fegan, D. J., Fegan, S. J., Finley, J. P., Gaidos, J. A., Hall, T. A., Hillas, A. M., Knapp, J., Krennrich, F., Bohec, S. Le, Lessard, R. W., Masterson, C., Myles, S. D., Quinn, J., Rose, H. J., Samuelson, F. W., Sembroski, G. H., Vassiliev, V. V., Weekes, T. C.
Only BL Lac objects have been detected as extragalactic sources of very high energy (E > 300 GeV) gamma rays. Using the Whipple Observatory Gamma-ray Telescope, we have attempted to detect more BL Lacs using three approaches. First, we have conducted
Externí odkaz:
http://arxiv.org/abs/astro-ph/9907263
Autor:
Bradbury, S. M., Bond, I. H., Breslin, A. C., Buckley, J. H., Carter-Lewis, D. A., Catanese, M., Criswell, S., Dingus, B. L., Fegan, D. J., Finley, J. P., Gaidos, J., Grindlay, J., Hillas, A. M., Harris, K., Hermann, G., Kaaret, P., Kieda, D., Knapp, J., Krennrich, F., LeBohec, S., Lessard, R. W., Lloyd-Evans, J., McKernan, B., Mueller, D., Ong, R., Quenby, J. J., Quinn, J., Rochester, G., Rose, H. J., Salamon, M., Sembroski, G. H., Sumner, T., Swordy, S., Vassiliev, V. V., Weekes, T. C.
Publikováno v:
AIP Conf.Proc.510:637-641,2004
We give an overview of the current status and scientific goals of VERITAS, a proposed hexagonal array of seven 10 m aperture imaging Cherenkov telescopes. The selected site is Montosa Canyon (1390 m a.s.l.) at the Whipple Observatory, Arizona. Each t
Externí odkaz:
http://arxiv.org/abs/astro-ph/9907248
Autor:
Burdett, A. M., Bond, I. H., Boyle, P. J., Bradbury, S. M., Buckley, J. H., Carter-Lewis, D. A., Catanese, M., Cawley, M. F., D'Vali, M., Fegan, D. J., Fegan, S. J., Finley, J. P., Gaidos, J. A., Gillanders, G. H., Hall, T. A., Hillas, A. M., Kildea, J., Knapp, J., Krennrich, F., Lang, M. J., LeBohec, S., Lessard, R. W., Masterson, C., Moriarty, P., Quinn, J., Rose, H. J., Samuelson, F. W., Sembroski, G. H., Srinivasan, R., Vassiliev, V. V., Weekes, T. C.
We present the results of a search for pulsed TeV emission from the Crab pulsar using the Whipple Observatory's 10m gamma-ray telescope. The direction of the Crab pulsar was observed for a total of 73.4 hours between 1994 November and 1997 March. Spe
Externí odkaz:
http://arxiv.org/abs/astro-ph/9906318
Autor:
Catanese, M., Bond, I. H., Bradbury, S. M., Breslin, A. C., Buckley, J. H., Burdett, A. M., Carter-Lewis, D. A., Cawley, M. F., Dunlea, S., D'Vali, M., Fegan, D. J., Fegan, S. J., Finley, J. P., Gaidos, J. A., Hall, T. A., Hillas, A. M., Horan, D., Knapp, J., Krennrich, F., Bohec, S. Le, Lessard, R. W., Masterson, C., Moriarty, P., Quinn, J., Rose, H. J., Samuelson, F. W., Sembroski, G. H., Vassiliev, V. V., Weekes, T. C., Maraschi, L., Fossati, G., Tavecchio, F., Chiappetti, L., Celotti, A., Ghisellini, G., Grandi, P., Pian, E., Tagliaferri, G., Treves, A.
Markarian 421 was observed for about four days with BeppoSAX and the Whipple Observatory gamma-ray telescope in April 1998. A pronounced, well-defined, flare with hour-scale variability was observed simultaneously in X-rays and very high energy gamma
Externí odkaz:
http://arxiv.org/abs/astro-ph/9906209
Autor:
Whipple Collaboration, Breslin, A. C., Bond, I. H., Bradbury, S. M., Buckley, J. H., Burdett, A. M., Carson, M. J., Carter-Lewis, D. A., Catanese, M., Cawley, M. F., Dunlea, S., D'Vali, M., Fegan, D. J., Fegan, S. J., Finley, J. P., Gaidos, J. A., Hall, T. A., Hillas, A. M., Horan, D., Kildea, J., Knapp, J., Krennrich, F., LeBohec, S., Lessard, R. W., Masterson, C., McKernan, B., Quinn, J., Rose, H. J., Samuelson, F. W., Sembroski, G. H., Vassiliev, V. V., Weekes, T. C.
Markarian 501, a nearby (z=0.033) X-ray selected BL Lacertae object, is a well established source of Very High Energy (VHE, E>=300 GeV) gamma rays. Dramatic variability in its gamma-ray emission on time-scales from years to as short as two hours has
Externí odkaz:
http://arxiv.org/abs/astro-ph/9906150