Observation of very high energy gamma rays from HESS J1804-216 with CANGAROO-III telescopes

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

doi:10.1086/589877

Observation of very high energy gamma rays from HESS J1804-216 with CANGAROO-III telescopes

Y. Higashi^*, H. Kubo, T. Yoshida, R. Enomoto, T. Tanimori, P. G. Edwards, T. Naito, G. V. Bicknell, R. W. Clay, S. Gunji, S. Hara, T. Hara, T. Hattori, S. Hayashi, Y. Hirai, K. Inoue, S. Kabuki, F. Kajino, H. Katagiri, A. KawachiT. Kifune, R. Kiuchi, J. Kushida, Y. Matsubara, T. Mizukami, Y. Mizumoto, R. Mizuniwa, M. Mori, H. Muraishi, Y. Muraki, T. Nakamori, S. Nakano, D. Nishida, K. Nishijima, M. Ohishi, Y. Sakamoto, A. Seki, V. Stamatescu, T. Suzuki, D. L. Swaby, G. Thornton, F. Tokanai, K. Tsuchiya, S. Watanabe, Y. Yamada, E. Yamazaki, S. Yanagita, T. Yoshikoshi, Y. Yukawa

^*Corresponding author for this work

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

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Abstract

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 high energy gamma rays above 600 GeV at the 10 σ level in an effective exposure of 76 hr. We obtained a differential flux of (5.0 ± 1.5_stat ± 1.6_sys) × 10^-12 (E/1 TeV)^-α cm^-2 s^-1 TeV^-1 with a photon index a of 2.69 ± 0.30_stat ± 0.34_sys, which is consistent with that of the H.E.S.S. observation in 2004. We also confirm the extended morphology of the source. By combining our result with multiwavelength observations, we discuss the possible counterparts of HESS J1804-216 and the radiation mechanism based on leptonic and hadronic processes for a supernova remnant and a pulsar wind nebula.

Original language	English
Pages (from-to)	957-966
Number of pages	10
Journal	Astrophysical Journal
Volume	683
Issue number	2
DOIs	https://doi.org/10.1086/589877
Publication status	Published - 20 Aug 2008

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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., ... Yukawa, Y. (2008). Observation of very high energy gamma rays from HESS J1804-216 with CANGAROO-III telescopes. Astrophysical Journal, 683(2), 957-966. https://doi.org/10.1086/589877

@article{c1d90b2977ec4ad39cc5558bc7155544,

title = "Observation of very high energy gamma rays from HESS J1804-216 with CANGAROO-III telescopes",

abstract = "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 high energy gamma rays above 600 GeV at the 10 σ level in an effective exposure of 76 hr. We obtained a differential flux of (5.0 ± 1.5stat ± 1.6sys) × 10-12 (E/1 TeV)-α cm-2 s-1 TeV-1 with a photon index a of 2.69 ± 0.30stat ± 0.34sys, which is consistent with that of the H.E.S.S. observation in 2004. We also confirm the extended morphology of the source. By combining our result with multiwavelength observations, we discuss the possible counterparts of HESS J1804-216 and the radiation mechanism based on leptonic and hadronic processes for a supernova remnant and a pulsar wind nebula.",

keywords = "Gamma rays: observations, ISM: individual (G07-0.1, HESS J1804-216), Pulsars: individual (PSR B1800-21), X-rays: individual (Suzaku J1804-2140, Suzaku J1804-2142)",

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

year = "2008",

month = aug,

day = "20",

doi = "10.1086/589877",

language = "English",

volume = "683",

pages = "957--966",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

Higashi, Y, Kubo, H, Yoshida, T, Enomoto, R, Tanimori, T, Edwards, PG, Naito, T, Bicknell, GV, Clay, RW, 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, DL, Thornton, G, Tokanai, F, Tsuchiya, K, Watanabe, S, Yamada, Y, Yamazaki, E, Yanagita, S, Yoshikoshi, T & Yukawa, Y 2008, 'Observation of very high energy gamma rays from HESS J1804-216 with CANGAROO-III telescopes', Astrophysical Journal, vol. 683, no. 2, pp. 957-966. https://doi.org/10.1086/589877

TY - JOUR

T1 - Observation of very high energy gamma rays from HESS J1804-216 with CANGAROO-III telescopes

AU - Higashi, Y.

AU - Kubo, H.

AU - Yoshida, T.

AU - Enomoto, R.

AU - Tanimori, T.

AU - Edwards, P. G.

AU - Naito, T.

AU - Bicknell, G. V.

AU - Clay, R. W.

AU - Gunji, S.

AU - Hara, S.

AU - Hara, T.

AU - Hattori, T.

AU - Hayashi, S.

AU - Hirai, Y.

AU - Inoue, K.

AU - Kabuki, S.

AU - Kajino, F.

AU - Katagiri, H.

AU - Kawachi, A.

AU - Kifune, T.

AU - Kiuchi, R.

AU - Kushida, J.

AU - Matsubara, Y.

AU - Mizukami, T.

AU - Mizumoto, Y.

AU - Mizuniwa, R.

AU - Mori, M.

AU - Muraishi, H.

AU - Muraki, Y.

AU - Nakamori, T.

AU - Nakano, S.

AU - Nishida, D.

AU - Nishijima, K.

AU - Ohishi, M.

AU - Sakamoto, Y.

AU - Seki, A.

AU - Stamatescu, V.

AU - Suzuki, T.

AU - Swaby, D. L.

AU - Thornton, G.

AU - Tokanai, F.

AU - Tsuchiya, K.

AU - Watanabe, S.

AU - Yamada, Y.

AU - Yamazaki, E.

AU - Yanagita, S.

AU - Yoshikoshi, T.

AU - Yukawa, Y.

PY - 2008/8/20

Y1 - 2008/8/20

N2 - 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 high energy gamma rays above 600 GeV at the 10 σ level in an effective exposure of 76 hr. We obtained a differential flux of (5.0 ± 1.5stat ± 1.6sys) × 10-12 (E/1 TeV)-α cm-2 s-1 TeV-1 with a photon index a of 2.69 ± 0.30stat ± 0.34sys, which is consistent with that of the H.E.S.S. observation in 2004. We also confirm the extended morphology of the source. By combining our result with multiwavelength observations, we discuss the possible counterparts of HESS J1804-216 and the radiation mechanism based on leptonic and hadronic processes for a supernova remnant and a pulsar wind nebula.

AB - 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 high energy gamma rays above 600 GeV at the 10 σ level in an effective exposure of 76 hr. We obtained a differential flux of (5.0 ± 1.5stat ± 1.6sys) × 10-12 (E/1 TeV)-α cm-2 s-1 TeV-1 with a photon index a of 2.69 ± 0.30stat ± 0.34sys, which is consistent with that of the H.E.S.S. observation in 2004. We also confirm the extended morphology of the source. By combining our result with multiwavelength observations, we discuss the possible counterparts of HESS J1804-216 and the radiation mechanism based on leptonic and hadronic processes for a supernova remnant and a pulsar wind nebula.

KW - Gamma rays: observations

KW - ISM: individual (G07-0.1, HESS J1804-216)

KW - Pulsars: individual (PSR B1800-21)

KW - X-rays: individual (Suzaku J1804-2140, Suzaku J1804-2142)

UR - http://www.scopus.com/inward/record.url?scp=51349127437&partnerID=8YFLogxK

U2 - 10.1086/589877

DO - 10.1086/589877

M3 - Article

SN - 0004-637X

VL - 683

SP - 957

EP - 966

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

Observation of very high energy gamma rays from HESS J1804-216 with CANGAROO-III telescopes

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