A search for Sub-TeV gamma rays from the vela pulsar region with Cangaroo-III

R. Enomoto; K. Tsuchiya; Y. Adachi; S. Kabuki; P. G. Edwards; A. Asahara; G. V. Bicknell; R. W. Clay; Y. Doi; S. Gunji; S. Hara; T. Hara; T. Hattori; Sei Hayashi; Y. Higashi; R. Inoue; C. Itoh; F. Kajino; H. Katagiri; A. Kawachi; S. Kawasaki; T. Kifune; R. Kiuchi; K. Konno; L. T. Ksenofontov; H. Kubo; J. Kushida; Y. Matsubara; Y. Mizumoto; M. Mori; H. Muraishi; Y. Muraki; T. Naito; T. Nakamori; D. Nishida; K. Nishijima; M. Ohishi; J. R. Patterson; R. J. Protheroe; Y. Sakamoto; M. Sato; S. Suzuki; T. Suzuki; D. L. Swaby; T. Tanimori; H. Tanimura; G. J. Thornton; S. Watanabe; T. Yamaoka; M. Yamazaki; S. Yanagita; T. Yoshida; T. Yoshikoshi; M. Yuasa; Y. Yukawa

doi:10.1086/498858

A search for Sub-TeV gamma rays from the vela pulsar region with Cangaroo-III

R. Enomoto^*, K. Tsuchiya, Y. Adachi, S. Kabuki, P. G. Edwards, A. Asahara, G. V. Bicknell, R. W. Clay, Y. Doi, S. Gunji, S. Hara, T. Hara, T. Hattori, Sei Hayashi, Y. Higashi, R. Inoue, C. Itoh, F. Kajino, H. Katagiri, A. KawachiS. Kawasaki, T. Kifune, R. Kiuchi, K. Konno, L. T. Ksenofontov, H. Kubo, J. Kushida, Y. Matsubara, Y. Mizumoto, M. Mori, H. Muraishi, Y. Muraki, T. Naito, T. Nakamori, D. Nishida, K. Nishijima, M. Ohishi, J. R. Patterson, R. J. Protheroe, Y. Sakamoto, M. Sato, S. Suzuki, T. Suzuki, D. L. Swaby, T. Tanimori, H. Tanimura, G. J. Thornton, S. Watanabe, T. Yamaoka, 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

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Abstract

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 and February in a search for sub-TeV gamma rays from the pulsar and surrounding regions. We describe the observations, provide a detailed account of the calibration methods, and introduce the improved and bias-free analysis techniques employed for CANGAROO-III data. No evidence of gamma-ray emission is found from either the pulsar position or the previously reported position offset by 0°13, and the resulting upper limits are a factor of 5 less than the previously reported flux from observations with the CANGAROO-13.8 m telescope. Following the recent report by the H.E.S.S. group of TeV gamma-ray emission from the pulsar wind nebula, which is ∼0°5 south of the pulsar position, we examined this region and found supporting evidence for emission extended over ∼0°6.

Original language	English
Pages (from-to)	397-408
Number of pages	12
Journal	Astrophysical Journal
Volume	638
Issue number	1 I
DOIs	https://doi.org/10.1086/498858
Publication status	Published - 10 Feb 2006

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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, S., Higashi, Y., Inoue, R., Itoh, C., Kajino, F., Katagiri, H., ... Yukawa, Y. (2006). A search for Sub-TeV gamma rays from the vela pulsar region with Cangaroo-III. Astrophysical Journal, 638(1 I), 397-408. https://doi.org/10.1086/498858

@article{f6fb9d55238f4a20b260dd880478018f,

title = "A search for Sub-TeV gamma rays from the vela pulsar region with Cangaroo-III",

abstract = "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 and February in a search for sub-TeV gamma rays from the pulsar and surrounding regions. We describe the observations, provide a detailed account of the calibration methods, and introduce the improved and bias-free analysis techniques employed for CANGAROO-III data. No evidence of gamma-ray emission is found from either the pulsar position or the previously reported position offset by 0°13, and the resulting upper limits are a factor of 5 less than the previously reported flux from observations with the CANGAROO-13.8 m telescope. Following the recent report by the H.E.S.S. group of TeV gamma-ray emission from the pulsar wind nebula, which is ∼0°5 south of the pulsar position, we examined this region and found supporting evidence for emission extended over ∼0°6.",

keywords = "Gamma rays: observations, Methods: data analysis, Pulsars: individual (Vela)",

author = "R. Enomoto and K. Tsuchiya and Y. Adachi and S. Kabuki and Edwards, {P. G.} and A. Asahara and Bicknell, {G. V.} and Clay, {R. W.} and Y. Doi and S. Gunji and S. Hara and T. Hara and T. Hattori and Sei 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 Ksenofontov, {L. T.} and H. Kubo and J. Kushida and Y. Matsubara and Y. Mizumoto and M. Mori and H. Muraishi and Y. Muraki and T. Naito and T. Nakamori and D. Nishida and K. Nishijima and M. Ohishi and Patterson, {J. R.} and Protheroe, {R. J.} and Y. Sakamoto and M. Sato and S. Suzuki and T. Suzuki and Swaby, {D. L.} and T. Tanimori and H. Tanimura and Thornton, {G. J.} and S. Watanabe and T. Yamaoka and M. Yamazaki and S. Yanagita and T. Yoshida and T. Yoshikoshi and M. Yuasa and Y. Yukawa",

year = "2006",

month = feb,

day = "10",

doi = "10.1086/498858",

language = "English",

volume = "638",

pages = "397--408",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1 I",

}

Enomoto, R, Tsuchiya, K, Adachi, Y, Kabuki, S, Edwards, PG, Asahara, A, Bicknell, GV, Clay, RW, Doi, Y, Gunji, S, Hara, S, Hara, T, Hattori, T, Hayashi, S, Higashi, Y, Inoue, R, Itoh, C, Kajino, F, Katagiri, H, Kawachi, A, Kawasaki, S, Kifune, T, Kiuchi, R, Konno, K, Ksenofontov, LT, 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, JR, Protheroe, RJ, Sakamoto, Y, Sato, M, Suzuki, S, Suzuki, T, Swaby, DL, Tanimori, T, Tanimura, H, Thornton, GJ, Watanabe, S, Yamaoka, T, Yamazaki, M, Yanagita, S, Yoshida, T, Yoshikoshi, T, Yuasa, M & Yukawa, Y 2006, 'A search for Sub-TeV gamma rays from the vela pulsar region with Cangaroo-III', Astrophysical Journal, vol. 638, no. 1 I, pp. 397-408. https://doi.org/10.1086/498858

TY - JOUR

T1 - A search for Sub-TeV gamma rays from the vela pulsar region with Cangaroo-III

AU - Enomoto, R.

AU - Tsuchiya, K.

AU - Adachi, Y.

AU - Kabuki, S.

AU - Edwards, P. G.

AU - Asahara, A.

AU - Bicknell, G. V.

AU - Clay, R. W.

AU - Doi, Y.

AU - Gunji, S.

AU - Hara, S.

AU - Hara, T.

AU - Hattori, T.

AU - Hayashi, Sei

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 - Ksenofontov, L. T.

AU - Kubo, H.

AU - Kushida, J.

AU - Matsubara, Y.

AU - Mizumoto, Y.

AU - Mori, M.

AU - Muraishi, H.

AU - Muraki, Y.

AU - Naito, T.

AU - Nakamori, T.

AU - Nishida, D.

AU - Nishijima, K.

AU - Ohishi, M.

AU - Patterson, J. R.

AU - Protheroe, R. J.

AU - Sakamoto, Y.

AU - Sato, M.

AU - Suzuki, S.

AU - Suzuki, T.

AU - Swaby, D. L.

AU - Tanimori, T.

AU - Tanimura, H.

AU - Thornton, G. J.

AU - Watanabe, S.

AU - Yamaoka, T.

AU - Yamazaki, M.

AU - Yanagita, S.

AU - Yoshida, T.

AU - Yoshikoshi, T.

AU - Yuasa, M.

AU - Yukawa, Y.

PY - 2006/2/10

Y1 - 2006/2/10

N2 - 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 and February in a search for sub-TeV gamma rays from the pulsar and surrounding regions. We describe the observations, provide a detailed account of the calibration methods, and introduce the improved and bias-free analysis techniques employed for CANGAROO-III data. No evidence of gamma-ray emission is found from either the pulsar position or the previously reported position offset by 0°13, and the resulting upper limits are a factor of 5 less than the previously reported flux from observations with the CANGAROO-13.8 m telescope. Following the recent report by the H.E.S.S. group of TeV gamma-ray emission from the pulsar wind nebula, which is ∼0°5 south of the pulsar position, we examined this region and found supporting evidence for emission extended over ∼0°6.

AB - 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 and February in a search for sub-TeV gamma rays from the pulsar and surrounding regions. We describe the observations, provide a detailed account of the calibration methods, and introduce the improved and bias-free analysis techniques employed for CANGAROO-III data. No evidence of gamma-ray emission is found from either the pulsar position or the previously reported position offset by 0°13, and the resulting upper limits are a factor of 5 less than the previously reported flux from observations with the CANGAROO-13.8 m telescope. Following the recent report by the H.E.S.S. group of TeV gamma-ray emission from the pulsar wind nebula, which is ∼0°5 south of the pulsar position, we examined this region and found supporting evidence for emission extended over ∼0°6.

KW - Gamma rays: observations

KW - Methods: data analysis

KW - Pulsars: individual (Vela)

UR - http://www.scopus.com/inward/record.url?scp=33644557699&partnerID=8YFLogxK

U2 - 10.1086/498858

DO - 10.1086/498858

M3 - Article

SN - 0004-637X

VL - 638

SP - 397

EP - 408

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 I

ER -

A search for Sub-TeV gamma rays from the vela pulsar region with Cangaroo-III

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