cangaroo III search for gamma rays from centaurus a and the ω centauri region

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

doi:10.1086/520767

cangaroo III search for gamma rays from centaurus a and the ω centauri region

S. Kabuki^*, R. Enomoto, G. V. Bicknell, R. W. Clay, P. G. Edwards, S. Gunji, S. Hara, T. Hattori, S. Hayashi, Y. Higashi, R. Inoue, C. Itoh, F. Kajino, H. Katagiri, A. Kawachi, S. Kawasaki, T. Kifune, R. Kiuchi, K. Konno, H. KuboJ. Kushida, Y. Matsubara, T. Mizukami, R. Mizuniwa, M. Mori, H. Muraishi, T. Naito, T. Nakamori, D. Nishida, K. Nishijima, M. Ohishi, Y. Sakamoto, V. Stamatescu, S. Suzuki, T. Suzuki, D. L. Swaby, T. Tanimori, G. Thornton, F. Tokanai, K. Tsuchiya, S. Watanabe, Y. Yamada, M. Yamazaki, S. Yanagita, T. Yoshida, T. Yoshikoshi, M. Yuasa, Y. Yukawa

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

We have observed the giant radio galaxy Centauras A and the globular cluster ω Centauri in the TeV energy region using the CANGAROO 111 stereoscopic system. The system has been in operation since 2004 with an array of four Imaging Atmospheric Cerenkov Telescopes (IACT) with ∼100 m spacings. The observations were carried out in 2004 March and April. In total, approximately 10 hr of data were obtained for each target. No statistically significant gammaray signal has been found above 420 GeV over a wide angular region (a 1 °radius from the pointing center), and we derive flux upper limits using the wholefield of view. Implications for the total energy of cosmic rays and the density of the cold dark matter are considered.

Original language	English
Pages (from-to)	968-973
Number of pages	6
Journal	Astrophysical Journal
Volume	668
Issue number	2
DOIs	https://doi.org/10.1086/520767
Publication status	Published - 20 Oct 2007

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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., ... Yukawa, Y. (2007). cangaroo III search for gamma rays from centaurus a and the ω centauri region. Astrophysical Journal, 668(2), 968-973. https://doi.org/10.1086/520767

@article{efc945a4dd21446c9be76d4b161b89be,

title = "cangaroo III search for gamma rays from centaurus a and the ω centauri region",

abstract = "We have observed the giant radio galaxy Centauras A and the globular cluster ω Centauri in the TeV energy region using the CANGAROO 111 stereoscopic system. The system has been in operation since 2004 with an array of four Imaging Atmospheric Cerenkov Telescopes (IACT) with ∼100 m spacings. The observations were carried out in 2004 March and April. In total, approximately 10 hr of data were obtained for each target. No statistically significant gammaray signal has been found above 420 GeV over a wide angular region (a 1 °radius from the pointing center), and we derive flux upper limits using the wholefield of view. Implications for the total energy of cosmic rays and the density of the cold dark matter are considered.",

keywords = "Galaxies: individual (Centauras A), Gamma rays: observations, Globular clusters: individual (ω Centauri)",

author = "S. Kabuki and R. Enomoto and Bicknell, {G. V.} and Clay, {R. W.} and Edwards, {P. G.} and S. Gunji and S. Hara and T. Hattori and S. Hayashi and Y. Higashi and R. Inoue and C. Itoh and F. Kajino and H. Katagiri and A. Kawachi and S. Kawasaki and T. Kifune and R. Kiuchi and K. Konno and H. Kubo and J. Kushida and Y. Matsubara and T. Mizukami and R. Mizuniwa and M. Mori and H. Muraishi and T. Naito and T. Nakamori and D. Nishida and K. Nishijima and M. Ohishi and Y. Sakamoto and V. Stamatescu and S. Suzuki and T. Suzuki and Swaby, {D. L.} and T. Tanimori and G. Thornton and F. Tokanai and K. Tsuchiya and S. Watanabe and Y. Yamada and M. Yamazaki and S. Yanagita and T. Yoshida and T. Yoshikoshi and M. Yuasa and Y. Yukawa",

year = "2007",

month = oct,

day = "20",

doi = "10.1086/520767",

language = "English",

volume = "668",

pages = "968--973",

journal = "Astrophysical Journal",

issn = "0004-637X",

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Kabuki, S, Enomoto, R, Bicknell, GV, Clay, RW, Edwards, PG, 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, DL, Tanimori, T, Thornton, G, Tokanai, F, Tsuchiya, K, Watanabe, S, Yamada, Y, Yamazaki, M, Yanagita, S, Yoshida, T, Yoshikoshi, T, Yuasa, M & Yukawa, Y 2007, 'cangaroo III search for gamma rays from centaurus a and the ω centauri region', Astrophysical Journal, vol. 668, no. 2, pp. 968-973. https://doi.org/10.1086/520767

TY - JOUR

T1 - cangaroo III search for gamma rays from centaurus a and the ω centauri region

AU - Kabuki, S.

AU - Enomoto, R.

AU - Bicknell, G. V.

AU - Clay, R. W.

AU - Edwards, P. G.

AU - Gunji, S.

AU - Hara, S.

AU - Hattori, T.

AU - Hayashi, S.

AU - Higashi, Y.

AU - Inoue, R.

AU - Itoh, C.

AU - Kajino, F.

AU - Katagiri, H.

AU - Kawachi, A.

AU - Kawasaki, S.

AU - Kifune, T.

AU - Kiuchi, R.

AU - Konno, K.

AU - Kubo, H.

AU - Kushida, J.

AU - Matsubara, Y.

AU - Mizukami, T.

AU - Mizuniwa, R.

AU - Mori, M.

AU - Muraishi, H.

AU - Naito, T.

AU - Nakamori, T.

AU - Nishida, D.

AU - Nishijima, K.

AU - Ohishi, M.

AU - Sakamoto, Y.

AU - Stamatescu, V.

AU - Suzuki, S.

AU - Suzuki, T.

AU - Swaby, D. L.

AU - Tanimori, T.

AU - Thornton, G.

AU - Tokanai, F.

AU - Tsuchiya, K.

AU - Watanabe, S.

AU - Yamada, Y.

AU - Yamazaki, M.

AU - Yanagita, S.

AU - Yoshida, T.

AU - Yoshikoshi, T.

AU - Yuasa, M.

AU - Yukawa, Y.

PY - 2007/10/20

Y1 - 2007/10/20

N2 - We have observed the giant radio galaxy Centauras A and the globular cluster ω Centauri in the TeV energy region using the CANGAROO 111 stereoscopic system. The system has been in operation since 2004 with an array of four Imaging Atmospheric Cerenkov Telescopes (IACT) with ∼100 m spacings. The observations were carried out in 2004 March and April. In total, approximately 10 hr of data were obtained for each target. No statistically significant gammaray signal has been found above 420 GeV over a wide angular region (a 1 °radius from the pointing center), and we derive flux upper limits using the wholefield of view. Implications for the total energy of cosmic rays and the density of the cold dark matter are considered.

AB - We have observed the giant radio galaxy Centauras A and the globular cluster ω Centauri in the TeV energy region using the CANGAROO 111 stereoscopic system. The system has been in operation since 2004 with an array of four Imaging Atmospheric Cerenkov Telescopes (IACT) with ∼100 m spacings. The observations were carried out in 2004 March and April. In total, approximately 10 hr of data were obtained for each target. No statistically significant gammaray signal has been found above 420 GeV over a wide angular region (a 1 °radius from the pointing center), and we derive flux upper limits using the wholefield of view. Implications for the total energy of cosmic rays and the density of the cold dark matter are considered.

KW - Galaxies: individual (Centauras A)

KW - Gamma rays: observations

KW - Globular clusters: individual (ω Centauri)

UR - http://www.scopus.com/inward/record.url?scp=38949196407&partnerID=8YFLogxK

U2 - 10.1086/520767

DO - 10.1086/520767

M3 - Article

SN - 0004-637X

VL - 668

SP - 968

EP - 973

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

cangaroo III search for gamma rays from centaurus a and the ω centauri region

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