Search Results - "Clay, R. W."

Ultra High Energy Cosmic Rays by Protheroe, R. J., Clay, R. W.

“…Cosmic rays with energies above 1018 eV are currently of considerable interest in astrophysics and are to be further studied in a number of projects which are…”
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CANGAROO-III Search for TeV Gamma Rays from Two Clusters of Galaxies by Kiuchi, R, Mori, M, Bicknell, G. V, Clay, R. W, Edwards, P. G, Enomoto, R, Gunji, S, Hara, S, Hara, T, Hattori, T, Hayashi, S, Higashi, Y, Hirai, Y, Inoue, K, Itoh, C, Kabuki, S, Kajino, F, Katagiri, H, Kawachi, A, Kifune, T, Kubo, H, Kushida, J, Matsubara, Y, Mizukami, T, Mizumoto, Y, Mizuniwa, R, Muraishi, H, Muraki, Y, Naito, T, Nakamori, T, Nakano, S, Nishida, D, Nishijima, K, Ohishi, M, Sakamoto, Y, Seki, A, Stamatescu, V, Suzuki, T, Swaby, D. L, Tanimori, T, Thornton, G, Tokanai, F, Tsuchiya, K, Watanabe, S, Yamada, Y, Yamazaki, E, Yanagita, S, Yoshida, T, Yoshikoshi, T, Yukawa, Y

“…Because accretion and merger shocks in clusters of galaxies may accelerate particles to high energies, clusters are candidate sites for the origin of…”
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Rapid Variability and Annual Cycles in the Characteristic Timescale of the Scintillating Source PKS 1257–326 by Bignall, H. E, Jauncey, D. L, Lovell, J. E. J, Tzioumis, A. K, Kedziora-Chudczer, L, Macquart, J.-P, Tingay, S. J, Rayner, D. P, Clay, R. W

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CANGAROO III Search for Gamma Rays from Centaurus A and the ω Centauri Region by Kabuki, S, Enomoto, R, Bicknell, G. V, Clay, R. W, Edwards, P. G, Gunji, S, Hara, S, Hattori, T, Hayashi, S, Higashi, Y, Inoue, R, Itoh, C, Kajino, F, Katagiri, H, Kawachi, A, Kawasaki, S, Kifune, T, Kiuchi, R, Konno, K, Kubo, H, Kushida, J, Matsubara, Y, Mizukami, T, Mizuniwa, R, Mori, M, Muraishi, H, Naito, T, Nakamori, T, Nishida, D, Nishijima, K, Ohishi, M, Sakamoto, Y, Stamatescu, V, Suzuki, S, Suzuki, T, Swaby, D. L, Tanimori, T, Thornton, G, Tokanai, F, Tsuchiya, K, Watanabe, S, Yamada, Y, Yamazaki, M, Yanagita, S, Yoshida, T, Yoshikoshi, T, Yuasa, M, Yukawa, Y

“…We have observed the giant radio galaxy Centaurus A and the globular cluster omega Centauri in the TeV energy region using the CANGAROO III stereoscopic…”
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A Search for Sub-TeV Gamma Rays from the Vela Pulsar Region with CANGAROO-III by Enomoto, R, Tsuchiya, K, Adachi, Y, Kabuki, S, Edwards, P. G, Asahara, A, Bicknell, G. V, Clay, R. W, Doi, Y, Gunji, S, Hara, S, Hara, T, Hattori, T, Hayashi, Sei, Higashi, Y, Inoue, R, Itoh, C, Kajino, F, Katagiri, H, Kawachi, A, Kawasaki, S, Kifune, T, Kiuchi, R, Konno, K, Ksenofontov, L. T, Kubo, H, Kushida, J, Matsubara, Y, Mizumoto, Y, Mori, M, Muraishi, H, Muraki, Y, Naito, T, Nakamori, T, Nishida, D, Nishijima, K, Ohishi, M, Patterson, J. R, Protheroe, R. J, Sakamoto, Y, Sato, M, Suzuki, S, Suzuki, T, Swaby, D. L, Tanimori, T, Tanimura, H, Thornton, G. J, Watanabe, S, Yamaoka, T, Yamazaki, M, Yanagita, S, Yoshida, T, Yoshikoshi, T, Yuasa, M, Yukawa, Y

“…We made stereoscopic observations of the Vela pulsar region with two of the 10 m diameter CANGAROO-III imaging atmospheric Cerenkov telescopes in 2004 January…”
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CANGAROO-III Observations of the 2006 Outburst of PKS 2155–304 by Sakamoto, Y, Nishijima, K, Mizukami, T, Yamazaki, E, Kushida, J, Enomoto, R, Ohishi, M, Bicknell, G. V, Clay, R. W, Edwards, P. G, Gunji, S, Hara, S, Hattori, T, Hayashi, S, Higashi, Y, Hirai, Y, Inoue, K, Itoh, C, Kabuki, S, Kajino, F, Katagiri, H, Kawachi, A, Kifune, T, Kiuchi, R, Kubo, H, Mizuniwa, R, Mori, M, Muraishi, H, Naito, T, Nakamori, T, Nakano, S, Nishida, D, Seki, A, Stamatescu, V, Suzuki, T, Swaby, D. L, Tanimori, T, Thornton, G, Tokanai, F, Tsuchiya, K, Watanabe, S, Yamada, Y, Yanagita, S, Yoshida, T, Yoshikoshi, T, Yukawa, Y

“…We have used the CANGAROO-III imaging atmospheric Cerenkov telescopes to observe the high-frequency-peaked BL Lacertae (HBL) object PKS 2155-304 between 2006…”
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A Search for TeV Gamma-Ray Emission from the PSR B1259–63/SS 2883 Binary System with the CANGAROO-II 10 Meter Telescope by Kawachi, A, Naito, T, Patterson, J. R, Edwards, P. G, Asahara, A, Bicknell, G. V, Clay, R. W, Enomoto, R, Gunji, S, Hara, S, Hara, T, Hattori, T, Hayashi, Seuchi, Hayashi, Shin'ichiro, Itoh, C, Kabuki, S, Kajino, F, Katagiri, H, Kifune, T, Ksenofontov, L, Kubo, H, Kushida, J, Matsubara, Y, Mizumoto, Y, Mori, M, Moro, H, Muraishi, H, Muraki, Y, Nakase, T, Nishida, D, Nishijima, K, Ohishi, M, Okumura, K, Protheroe, R. J, Sakurazawa, K, Swaby, D. L, Tanimori, T, Tokanai, F, Tsuchiya, K, Tsunoo, H, Uchida, T, Watanabe, A, Watanabe, S, Yanagita, S, Yoshida, T, Yoshikoshi, T

“…Observations of the PSR B1259-63/SS 2883 binary system using the CANGAROO-II Cerenkov telescope are reported. This nearby binary consists of a 48 ms radio…”
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Observation of an Extended Very High Energy Gamma-Ray Emission from MSH 15-52 with CANGAROO-III by Nakamori, T, Kubo, H, Yoshida, T, Tanimori, T, Enomoto, R, Bicknell, G. V, Clay, R. W, Edwards, P. G, Gunji, S, Hara, S, Hara, T, Hattori, T, Hayashi, S, Higashi, Y, Hirai, Y, Inoue, K, Kabuki, S, Kajino, F, Katagiri, H, Kawachi, A, Kifune, T, Kiuchi, R, Kushida, J, Matsubara, Y, Mizukami, T, Mizumoto, Y, Mizuniwa, R, Mori, M, Muraishi, H, Muraki, Y, Naito, T, Nakano, S, Nishida, D, Nishijima, K, Ohishi, M, Sakamoto, Y, Seki, A, Stamatescu, V, Suzuki, T, Swaby, D. L, Thornton, G, Tokanai, F, Tsuchiya, K, Watanabe, S, Yamada, Y, Yamazaki, E, Yanagita, S, Yoshikoshi, T, Yukawa, Y

“…We have observed the supernova remnant MSH 15-52 (G320.4-1.2), which contains the gamma-ray pulsar PSR B1509-58, using the CANGAROO-III imaging atmospheric…”
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Observation of Very High Energy Gamma Rays from HESS J1804–216 with CANGAROO-III Telescopes by Higashi, Y, Kubo, H, Yoshida, T, Enomoto, R, Tanimori, T, Edwards, P. G, Naito, T, Bicknell, G. V, Clay, R. W, Gunji, S, Hara, S, Hara, T, Hattori, T, Hayashi, S, Hirai, Y, Inoue, K, Kabuki, S, Kajino, F, Katagiri, H, Kawachi, A, Kifune, T, Kiuchi, R, Kushida, J, Matsubara, Y, Mizukami, T, Mizumoto, Y, Mizuniwa, R, Mori, M, Muraishi, H, Muraki, Y, Nakamori, T, Nakano, S, Nishida, D, Nishijima, K, Ohishi, M, Sakamoto, Y, Seki, A, Stamatescu, V, Suzuki, T, Swaby, D. L, Thornton, G, Tokanai, F, Tsuchiya, K, Watanabe, S, Yamada, Y, Yamazaki, E, Yanagita, S, Yoshikoshi, T, Yukawa, Y

“…We observed the unidentified TeV gamma-ray source HESS J1804-216 with the CANGAROO-III atmospheric Cerenkov telescopes from 2006 May to July. We detected very…”
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CANGAROO-III Search for Gamma Rays from Kepler's Supernova Remnant by Enomoto, R, Higashi, Y, Yoshida, T, Tanimori, T, Bicknell, G. V, Clay, R. W, Edwards, P. G, Gunji, S, Hara, S, Hara, T, Hattori, T, Hayashi, S, Hirai, Y, Inoue, K, Kabuki, S, Kajino, F, Katagiri, H, Kawachi, A, Kifune, T, Kiuchi, R, Kubo, H, Kushida, J, Matsubara, Y, Mizukami, T, Mizumoto, Y, Mizuniwa, R, Mori, M, Muraishi, H, Muraki, Y, Naito, T, Nakamori, T, Nakano, S, Nishida, D, Nishijima, K, Ohishi, M, Sakamoto, Y, Seki, A, Stamatescu, V, Suzuki, T, Swaby, D. L, Thornton, G, Tokanai, F, Tsuchiya, K, Watanabe, S, Yamada, Y, Yamazaki, E, Yanagita, S, Yoshikoshi, T, Yukawa, Y

“…Kepler's supernova, discovered in 1604 October, produced a remnant that has been well studied observationally in the radio, infrared, optical, and X- ray…”
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CANGAROO-III Search for Gamma Rays from SN 1987A and the Surrounding Field by Enomoto, R, Bicknell, G. V, Clay, R. W, Edwards, P. G, Gunji, S, Hara, S, Hattori, T, Hayashi, S, Higashi, Y, Hirai, Y, Inoue, K, Kabuki, S, Kajino, F, Katagiri, H, Kawachi, A, Kifune, T, Kiuchi, R, Kubo, H, Kushida, J, Mizukami, T, Mizuniwa, R, Mori, M, Muraishi, H, Naito, T, Nakamori, T, Nakano, S, Nishida, D, Nishijima, K, Ohishi, M, Sakamoto, Y, Seki, A, Stamatescu, V, Suzuki, T, Swaby, D. L, Tanimori, T, Thornton, G, Tokanai, F, Tsuchiya, K, Watanabe, S, Yamada, Y, Yamazaki, E, Yanagita, S, Yoshida, T, Yoshikoshi, T, Yukawa, Y

“…Optical images of SIM 1987A show a triple-ring structure. The inner (dust) ring has recently increased in brightness and in the number of hot spots, suggesting…”
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Muon Content of Extensive Air Showers: Comparison of the Energy Spectra Obtained by the Sydney University Giant Air-Shower Recorder and by the Pierre Auger Observatory by Karpikov, I. S., Bellido, J. A., Clay, R. W., Kalmykov, N. N., Rubtsov, G. I., Troitsky, S. V.

“…The Sydney University Giant Air-shower Recorder(SUGAR) measured the energy spectrum of ultra-high-energy cosmic rays reconstructed from muon detector reading…”
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CANGAROO-III Observation of TeV Gamma Rays from the Vicinity of PSR B1706-44 by Enomoto, R, Kushida, J, Nakamori, T, Kifune, T, Bicknell, G. V, Clay, R. W, Edwards, P. G, Gunji, S, Hara, S, Hara, T, Hattori, T, Hayashi, S, Higashi, Y, Hirai, Y, Inoue, K, Ishioka, H, Kabuki, S, Kajino, F, Katagiri, H, Kawachi, A, Kiuchi, R, Kubo, H, Kunisawa, T, Matoba, T, Matsubara, Y, Matsuzawa, I, Mizukami, T, Mizumura, Y, Mizumoto, Y, Mori, M, Muraishi, H, Naito, T, Nakano, S, Nishijima, K, Ohishi, M, Otake, Y, Ryoki, S, Saito, K, Sakamoto, Y, Seki, A, Stamatescu, V, Suzuki, T, Swaby, D. L, Tanimori, T, Thornton, G, Tokanai, F, Tsuchiya, K, Watanabe, S, Yamazaki, E, Yanagita, S, Yoshida, T, Yoshikoshi, T, Yukawa, Y

“…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…”
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In Search of the Origin of the Highest Energy Cosmic Rays by Clay, R W, Dawson, B R

“…The origin of the highest energy cosmic rays is a long-standing problem in astrophysics. We know such particles exist, but their rarity has hampered the…”
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The Source Energy Spectrum of Cosmic Rays by Clay, R. W.

“…An examination is made of the relationship between the observed energy spectrum of cosmic rays and the averaged spectrum of the cosmic rays at their sources…”
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Timing analysis techniques at large core distances for multi-TeV gamma ray astronomy by Stamatescu, V., Rowell, G.P., Denman, J., Clay, R.W., Dawson, B.R., Smith, A.G.K., Sudholz, T., Thornton, G.J., Wild, N.

“…We present an analysis technique that uses the timing information of Cherenkov images from extensive air showers (EAS). Our emphasis is on distant, or large…”
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CANGAROO III Observations of the Supernova Remnant RX J0852.0–4622 by Enomoto, R, Watanabe, S, Tanimori, T, Asahara, A, Bicknell, G. V, Clay, R. W, Edwards, P. G, Gunji, S, Hara, S, Hattori, T, Hayashi, S, Higashi, Y, Inoue, R, Itoh, C, Kabuki, S, Kajino, F, Katagiri, H, Kawachi, A, Kawasaki, S, Kifune, T, Kiuchi, R, Konno, K, Ksenofontov, L, Kubo, H, Kushida, J, Matsubara, Y, Mizukami, T, Mizuniwa, R, Mori, M, Muraishi, H, Naito, T, Nakamori, T, Nishida, D, Nishijima, K, Ohishi, M, Sakamoto, Y, Stamatescu, V, Suzuki, S, Suzuki, T, Swaby, D. L, Tanimura, H, Thornton, G, Tokanai, F, Tsuchiya, K, Yamada, Y, Yamazaki, M, Yanagita, S, Yoshida, T, Yoshikoshi, T, Yuasa, M, Yukawa, Y

“…Sub-TeV gamma-ray emission from the northwest rim of the supernova remnant RX J0852.0-4622 was detected with the CANGAROO II telescope and recently confirmed…”
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New Results from an ATCA Study of Intraday Variable Radio Sources by Bignall, H. E., Jauncey, D. L., Kedziora-Chudczer, L. L., Lovell, J. E. J., Macquart, J.-P., Rayner, D. P., Tingay, S. J., Tzioumis, A. K., Clay, R. W., Dodson, R. G., McCulloch, P. M., Nicolson, G. D.

“…We are undertaking an observational program using the ATCA to monitor the intraday variability (IDV) of a sample of sources at 4.8 and 8.6 GHz. The sources…”
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Search for VHE gamma rays from SS433/W50 with the CANGAROO-II telescope by Hayashi, Sei, Kajino, F., Naito, T., Asahara, A., Bicknell, G.V., Clay, R.W., Doi, Y., Edwards, P.G., Enomoto, R., Gunji, S., Hara, S., Hara, T., Hattori, T., Itoh, C., Kabuki, S., Katagiri, H., Kawachi, A., Kifune, T., Ksenofontov, L.T., Kubo, H., Kurihara, T., Kurosaka, R., Kushida, J., Matsubara, Y., Miyashita, Y., Mizumoto, Y., Mori, M., Mori, H., Muraishi, H., Muraki, Y., Nakase, T., Nishida, D., Nishijima, K., Ohishi, M., Okumura, K., Patterson, J.R., Protheroe, R.J., Sakamoto, N., Sakurazawa, K., Swaby, D.L., Tanimori, T., Tanimura, H., Thornton, G., Tokanai, F., Tsuchiya, K., Uchida, T., Watanabe, S., Yamaoka, T., Yanagita, S., Yoshida, T., Yoshikoshi, T.

“…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…”
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Searches for very high energy gamma rays from blazars with CANGAROO-III telescope in 2005–2009 by Mizumura, Y., Kushida, J., Nishijima, K., Bicknell, G.V., Clay, R.W., Edwards, P.G., Gunji, S., Hara, S., Hayashi, S., Kabuki, S., Kajino, F., Kawachi, A., Kifune, T., Kiuchi, R., Kodani, K., Matsubara, Y., Mizukami, T., Mizumoto, Y., Mori, M., Muraishi, H., Naito, T., Ohishi, M., Stamatescu, V., Swaby, D.L., Tanimori, T., Thornton, G., Tokanai, F., Toyama, T., Yanagita, S., Yoshida, T., Yoshikoshi, T.

“…► A partly new analysis was applied to CANGAROO-III data. ► No evidence of TeV gamma-ray emissions were found from four blazars. ► Non-simultaneous…”
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