R. W. Clay

Publication List Details

Period

1996 - 2009

Number

27

Co-Authors

Search for VHE gamma rays from SS433/W50 with the CANGAROO-II telescope (2009)

Hayashi, Sei., Kajino, F., Naito, T., Asahara, A., Bicknell, G. V., Clay, R. W., ...

SS433, located at the center of the supernova remnant W50, is a close proximity binary system consisting of a compact star and a normal star. Jets of material are directed outwards from the vicinity...

CANGAROO-III search for TeV Gamma-rays from two clusters of galaxies (2009)

Kiuchi, R., Mori, M., Bicknell, G. V., Clay, R. W., Edwards, P. G., Enomoto, R., ...

Because accretion and merger shocks in clusters of galaxies may accelerate particles to high energies, clusters are candidate sites for the origin of ultra-high-energy (UHE) cosmic-rays. A prediction...

CANGAROO-III Observation of TeV Gamma Rays from the vicinity of PSR B1 706-44 (2009)

Enomoto, R., Kushida, J., Nakamori, T., Kifune, T., Bicknell, G. V., Clay, R. W., ...

Observation by the CANGAROO-III stereoscopic system of the Imaging Cherenkov Telescope has detected extended emission of TeV gamma rays in the vicinity of the pulsar PSR B1706$-$44. The strength of...

The Fluorescence Detector of the Pierre Auger Observatory (2009)

Abreu, P., Aglietta, M., Aguirre, C., Ahn, E. J., Allard, D., ...

The Pierre Auger Observatory is a hybrid detector for ultra-high energy cosmic rays. It combines a surface array to measure secondary particles at ground level together with a fluorescence detector...

Astrophysical Sources of Cosmic Rays and Related Measurements with the Pierre Auger Observatory (2009)

Abreu, P., Aglietta, M., Aguirre, C., Ahn, E. J., Allard, D., ...

Studies of the correlations of ultra-high energy cosmic ray directions with extra-Galactic objects, of general anisotropy, of photons and neutrinos, and of other astrophysical effects, with the...

Operations of and Future Plans for the Pierre Auger Observatory (2009)

Abreu, P., Aglietta, M., Aguirre, C., Ahn, E. J., Allard, D., ...

Technical reports on operations and features of the Pierre Auger Observatory, including ongoing and planned enhancements and the status of the future northern hemisphere portion of the Observatory....

Calibration and Monitoring of the Pierre Auger Observatory (2009)

Abreu, P., Aglietta, M., Aguirre, C., Ahn, E. J., Allard, D., ...

Reports on the atmospheric monitoring, calibration, and other operating systems of the Pierre Auger Observatory. Contributions to the 31st International Cosmic Ray Conference, Lodz, Poland, July 2009.

The Cosmic Ray Energy Spectrum and Related Measurements with the Pierre Auger Observatory (2009)

Abreu, P., Aglietta, M., Aguirre, C., Ahn, E. J., Allard, D., ...

Studies of the cosmic ray energy spectrum at the highest energies with the Pierre Auger Observatory.

Studies of Cosmic Ray Composition and Air Shower Structure with the Pierre Auger Observatory (2009)

Abreu, P., Aglietta, M., Aguirre, C., Ahn, E. J., Allard, D., ...

Studies of the composition of the highest energy cosmic rays with the Pierre Auger Observatory, including examination of hadronic physics effects on the structure of extensive air showers....

28th International Cosmic Ray Conference 2867 Development of stereoscopic control system for the CANGAROO-III telescopes (2008)

Sei Hayashi, F. Kajino, M. Mori, T. Yoshikoshi, A. Asahara, G. V. Bicknell, ...

Stereoscopic observation by the CANGAROO-III imaging Cherenkov telescopes will be performed by operating four telescopes simultaneously with various operation modes. High quality control system of...

A Search for TeV Gamma-ray Emission from the PSR B1259−63/SS2883 Binary System with the CANGAROO-II 10-m Telescope (2008)

A. Kawachi, T. Naito, J. R. Patterson, P. G. Edwards, A. Asahara, G. V. Bicknell, ...

Observations of the PSR B1259−63/SS2883 binary system using the CANGAROO-II Cherenkov telescope are reported. This nearby binary consists of a 48 msec radio pulsar in a highly eccentric orbit...

Very high energy gamma-ray observations of the Galactic plane with the CANGAROO-III telescopes (2008)

M. Ohishi, M. Mori, Y. Adachi, A. Asahara, G. V. Bicknell, R. W. Clay, ...

We have searched for very high energy gamma-ray emission from two points (�������������� � and ���������� � ) on

28th International Cosmic Ray Conference 2533 Observation of sub-TeV gamma rays from SS433/W50 with the CANGAROO-II telescope (2008)

Sei Hayashi, F. Kajino, T. Naito, A. Asahara, G. V. Bicknell, R. W. Clay, ...

Observations of the western X-ray lobe region of SS433/W50 system were performed by the CANGAROO-II telescope in August and September, 2001, and July and September, 2002. Total observation times were...

T.HARA �,T.HATTORI � , S.HAYASHI,Y.HIRAI, K.INOUE � , C.ITOH � , S.KABUKI,F.KAJINO, (2008)

Y. Higashi, G. V. Bicknell, R. W. Clay, P. G. Edwards, R. Enomoto, S. Gunji, ...

Abstract: The H.E.S.S. collaboration has reported the detection of the gamma-ray emission from eight new sources located in the Galactic Plane. HESS J1804-216 is one of the brightest, and its size...

30TH INTERNATIONAL COSMIC RAY CONFERENCE Observations of extended VHE gamma-ray emission from MSH 15-52 with CANGAROO-III (2008)

T. Nakamori, G. V. Bicknell, R. W. Clay, P. G. Edwards, R. Enomoto, S. Gunji, ...

Abstract: The gamma-ray pulsar PSR B1509-58, surrounded by the supernova remnant MSH15- 52, was expected to be a Very High Energy gamma-ray source. The CANGAROO-I 3.8 m telescope reported a marginal...

Performance of the Atmospheric Cherenkov Imaging Camera for the CANGAROO-III Experiment (2008)

G. V. Bicknell, R. W. Clay, Y. Doi, P. G. Edwards, S. Gunji, S. Hara, ...

A Cherenkov imaging camera was developed and installed in the second telescope of the CANGAROO-III project for observing gamma-rays having energies above 10 11 eV. The camera consists of 427 pixels,...

28th International Cosmic Ray Conference 2855 Performance of the reflector of the CANGAROO-III imaging atmospheric Cherenkov telescope (2008)

M. Ohishi, A. Kawachi, M. Mori, A. Asahara, G. V. Bicknell, R. W. Clay, ...

The second 10m-diameter telescope of the CANGAROO-III project was completed in December 2002. The reflector is a tessellated paraboloid which consists of 114 spherical mirror segments with a f/d...

Measurement of the flux of ultrahigh energy cosmic rays from monocular observations by the High Resolution Fly's Eye experiment (2004)

Abu-Zayyad, T, Amann, J F, Archbold, G, Bellido, J A, Belov, K, ...

We have measured the cosmic ray spectrum above 10(17.2) eV using the two air-fluorescence detectors of the High Resolution Fly's Eye observatory operating in monocular mode. We describe the detector,...

Rapid Variability and Annual Cycles in the Characteristic Time-scale of the Scintillating Source PKS 1257-326 (2002)

Bignall, H. E., Jauncey, D. L., Lovell, J. E. J., Tzioumis, A. K., Kedziora-Chudczer, L., ...

Rapid radio intra-day variability (IDV) has been discovered in the southern quasar PKS 1257-326. Flux density changes of up to 40% in as little as 45 minutes have been observed in this source, making...

DOI: 10.1051/0004-6361:20021565 c ○ ESO 2002 Astronomy Astrophysics (2002)

C. Itoh, R. Enomoto, S. Yanagita, T. Yoshida, A. Asahara, G. V. Bicknell, ...

Detection of diffuse TeV gamma-ray emission from the neaby starburst galaxy NGC 253

A measurement of the average longitudinal development profile of cosmic ray air showers between 10 17 and 10 18 eV (2001)

Abu-Zayyad, T., Belov, K., Cao, Z., Chen, G.F., Dai, H.Y., Elbert, J.W., ...

The average extensive air shower longitudinal development profile is measured. Events between 10 17 and 10 18 eV recorded by the HiRes/MIA hybrid experiment are used for the average profile. Several...

Proceedings of ICRC 2001: 1--4 c Copernicus Gesellschaft 2001 (2001)

M. Mori, A. Asahara, G. V. Bicknell, R. W. Clay, P. G. Edwards, ...

We report on the status of the construction of an array of four 10 m atmospheric Cherenkov telescopes for gamma-ray astronomy, near Woomera, in South Australia -- the CANGAROO-III project. The first...

A measurement of the average longitudinal development profile of cosmic ray air showers between 10 17 and 10 18 eV (2001)

Abu-Zayyad, T., Belov, K., Cao, Z., Chen, G.F., Dai, H.Y., Elbert, J.W., ...

The average extensive air shower longitudinal development profile is measured. Events between 10 17 and 10 18 eV recorded by the HiRes/MIA hybrid experiment are used for the average profile. Several...

A measurement of the average longitudinal development profile of cosmic ray air showers between 10 17 and 10 18 eV (2001)

Abu-Zayyad, T., Belov, K., Cao, Z., Chen, G.F., Dai, H.Y., Elbert, J.W., ...

The average extensive air shower longitudinal development profile is measured. Events between 10 17 and 10 18 eV recorded by the HiRes/MIA hybrid experiment are used for the average profile. Several...

A Multi-Component Measurement of the Cosmic Ray Composition Between 10^{17} eV and 10^{18} eV (1999)

Abu-Zayyad, T., Belov, K., Bird, D. J., Boyer, J., Cao, Z., Catanese, M., ...

The average mass composition of cosmic rays with primary energies between $10^{17}$eV and $10^{18}$eV has been studied using a hybrid detector consisting of the High Resolution Fly's Eye (HiRes)...

Discovery of a Sub-Parsec Radio Counterjet in the Nucleus of Centaurus A (1996)

Jones, D. L., Tingay, S. J., Murphy, D. W., Meier, D. L., Jauncey, D. L., Reynolds, J. E., ...

A sub-parsec scale radio counterjet has been detected in the nucleus of the closest radio galaxy, Centaurus A (NGC 5128), with VLBI imaging at 2.3 and 8.4 GHz. This is one of the first detections of...