TeV gamma-ray observations of southern BL lacs with the CANGAROO 3.8m Imaging telescope

M. D. Roberts; S. A. Dazeley; P. G. Edwards; T. Hara; Y. Hayami; J. Holder; F. Kakimoto; S. Kamei; A. Kawachi; T. Kifune; R. Kita; T. Konishi; A. Masaike; Y. Matsubara; T. Matsuoka; Y. Mizumoto; M. Mori; H. Muraishi; Y. Muraki; K. Nishijima; S. Oda; S. Ogio; J. R. Patterson; G. P. Rowell; T. Sako; K. Sakurazawa; R. Susukita; A. Suzuki; R. Suzuki; T. Tamura; T. Tanimori; G. J. Thornton; S. Yanagita; T. Yoshida; T. Yoshikoshi

TeV gamma-ray observations of southern BL lacs with the CANGAROO 3.8m Imaging telescope

M. D. Roberts, S. A. Dazeley, P. G. Edwards, T. Hara, Y. Hayami, J. Holder, F. Kakimoto, S. Kamei, A. Kawachi, T. Kifune, R. Kita, T. Konishi, A. Masaike, Y. Matsubara, T. Matsuoka, Y. Mizumoto, M. Mori, H. Muraishi, Y. Muraki, K. NishijimaS. Oda, S. Ogio, J. R. Patterson, G. P. Rowell, T. Sako, K. Sakurazawa, R. Susukita, A. Suzuki, R. Suzuki, T. Tamura, T. Tanimori, G. J. Thornton, S. Yanagita, T. Yoshida, T. Yoshikoshi

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22 Citations (Scopus)

Abstract

Observational and theoretical results indicate that low-redshift BL Lacertae objects are the most likely extragalactic sources to be detectable at TeV energies. In this paper we present the results of observations of 4 BL Lacertae objects (PKS0521-365, EXO 0423.4-0840, PKS2005-489 and PKS2316-423) made between 1993 and 1996 with the CANGAROO 3.8 m imaging Čerenkov telescope. During the period of these observations the gamma-ray energy threshold of the 3.8m telescope was ∼2 TeV. Searches for steady long-term emission have been made, and, inspired by the TeV flares detected from Mkn 421 and Mkn 501, a search on a night-by-night timescale has also been performed for each source. Comprehensive Monte Carlo simulations are used to estimate upper limits for both steady and short timescale emission.

Original language	English
Pages (from-to)	25-30
Number of pages	6
Journal	Astronomy and Astrophysics
Volume	337
Issue number	1
Publication status	Published - Sept 1 1998
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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Roberts, M. D., Dazeley, S. A., Edwards, P. G., Hara, T., Hayami, Y., Holder, J., Kakimoto, F., Kamei, S., Kawachi, A., Kifune, T., Kita, R., Konishi, T., Masaike, A., Matsubara, Y., Matsuoka, T., Mizumoto, Y., Mori, M., Muraishi, H., Muraki, Y., ... Yoshikoshi, T. (1998). TeV gamma-ray observations of southern BL lacs with the CANGAROO 3.8m Imaging telescope. Astronomy and Astrophysics, 337(1), 25-30.

Roberts, MD, Dazeley, SA, Edwards, PG, Hara, T, Hayami, Y, Holder, J, Kakimoto, F, Kamei, S, Kawachi, A, Kifune, T, Kita, R, Konishi, T, Masaike, A, Matsubara, Y, Matsuoka, T, Mizumoto, Y, Mori, M, Muraishi, H, Muraki, Y, Nishijima, K, Oda, S, Ogio, S, Patterson, JR, Rowell, GP, Sako, T, Sakurazawa, K, Susukita, R, Suzuki, A, Suzuki, R, Tamura, T, Tanimori, T, Thornton, GJ, Yanagita, S, Yoshida, T & Yoshikoshi, T 1998, 'TeV gamma-ray observations of southern BL lacs with the CANGAROO 3.8m Imaging telescope', Astronomy and Astrophysics, vol. 337, no. 1, pp. 25-30.

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title = "TeV gamma-ray observations of southern BL lacs with the CANGAROO 3.8m Imaging telescope",

abstract = "Observational and theoretical results indicate that low-redshift BL Lacertae objects are the most likely extragalactic sources to be detectable at TeV energies. In this paper we present the results of observations of 4 BL Lacertae objects (PKS0521-365, EXO 0423.4-0840, PKS2005-489 and PKS2316-423) made between 1993 and 1996 with the CANGAROO 3.8 m imaging {\v C}erenkov telescope. During the period of these observations the gamma-ray energy threshold of the 3.8m telescope was ∼2 TeV. Searches for steady long-term emission have been made, and, inspired by the TeV flares detected from Mkn 421 and Mkn 501, a search on a night-by-night timescale has also been performed for each source. Comprehensive Monte Carlo simulations are used to estimate upper limits for both steady and short timescale emission.",

author = "Roberts, {M. D.} and Dazeley, {S. A.} and Edwards, {P. G.} and T. Hara and Y. Hayami and J. Holder and F. Kakimoto and S. Kamei and A. Kawachi and T. Kifune and R. Kita and T. Konishi and A. Masaike and Y. Matsubara and T. Matsuoka and Y. Mizumoto and M. Mori and H. Muraishi and Y. Muraki and K. Nishijima and S. Oda and S. Ogio and Patterson, {J. R.} and Rowell, {G. P.} and T. Sako and K. Sakurazawa and R. Susukita and A. Suzuki and R. Suzuki and T. Tamura and T. Tanimori and Thornton, {G. J.} and S. Yanagita and T. Yoshida and T. Yoshikoshi",

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T1 - TeV gamma-ray observations of southern BL lacs with the CANGAROO 3.8m Imaging telescope

AU - Roberts, M. D.

AU - Dazeley, S. A.

AU - Edwards, P. G.

AU - Hara, T.

AU - Hayami, Y.

AU - Holder, J.

AU - Kakimoto, F.

AU - Kamei, S.

AU - Kawachi, A.

AU - Kifune, T.

AU - Kita, R.

AU - Konishi, T.

AU - Masaike, A.

AU - Matsubara, Y.

AU - Matsuoka, T.

AU - Mizumoto, Y.

AU - Mori, M.

AU - Muraishi, H.

AU - Muraki, Y.

AU - Nishijima, K.

AU - Oda, S.

AU - Ogio, S.

AU - Patterson, J. R.

AU - Rowell, G. P.

AU - Sako, T.

AU - Sakurazawa, K.

AU - Susukita, R.

AU - Suzuki, A.

AU - Suzuki, R.

AU - Tamura, T.

AU - Tanimori, T.

AU - Thornton, G. J.

AU - Yanagita, S.

AU - Yoshida, T.

AU - Yoshikoshi, T.

PY - 1998/9/1

Y1 - 1998/9/1

N2 - Observational and theoretical results indicate that low-redshift BL Lacertae objects are the most likely extragalactic sources to be detectable at TeV energies. In this paper we present the results of observations of 4 BL Lacertae objects (PKS0521-365, EXO 0423.4-0840, PKS2005-489 and PKS2316-423) made between 1993 and 1996 with the CANGAROO 3.8 m imaging Čerenkov telescope. During the period of these observations the gamma-ray energy threshold of the 3.8m telescope was ∼2 TeV. Searches for steady long-term emission have been made, and, inspired by the TeV flares detected from Mkn 421 and Mkn 501, a search on a night-by-night timescale has also been performed for each source. Comprehensive Monte Carlo simulations are used to estimate upper limits for both steady and short timescale emission.

AB - Observational and theoretical results indicate that low-redshift BL Lacertae objects are the most likely extragalactic sources to be detectable at TeV energies. In this paper we present the results of observations of 4 BL Lacertae objects (PKS0521-365, EXO 0423.4-0840, PKS2005-489 and PKS2316-423) made between 1993 and 1996 with the CANGAROO 3.8 m imaging Čerenkov telescope. During the period of these observations the gamma-ray energy threshold of the 3.8m telescope was ∼2 TeV. Searches for steady long-term emission have been made, and, inspired by the TeV flares detected from Mkn 421 and Mkn 501, a search on a night-by-night timescale has also been performed for each source. Comprehensive Monte Carlo simulations are used to estimate upper limits for both steady and short timescale emission.

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TeV gamma-ray observations of southern BL lacs with the CANGAROO 3.8m Imaging telescope

Abstract

All Science Journal Classification (ASJC) codes

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