Multi-tev gamma-ray observation from the crab nebula using the tibet-iii air shower array finely tuned by the cosmic ray moon's shadow | |
Amenomori, M.1; Bi, X. J.2; Chen, D.3; Cui, S. W.4; Danzengluobu5; Ding, L. K.2; Ding, X. H.5; Fan, C.6; Feng, C. F.6; Feng, Zhaoyang2 | |
刊名 | Astrophysical journal
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2009-02-10 | |
卷号 | 692期号:1页码:61-72 |
关键词 | Cosmic rays Gamma rays: observations Ism: individual (crab nebula) Magnetic fields Moon Pulsars: individual (crab pulsar) |
ISSN号 | 0004-637X |
DOI | 10.1088/0004-637x/692/1/61 |
通讯作者 | Amenomori, m.() |
英文摘要 | The tibet-iii air shower array, consisting of 533 scintillation detectors, has been operating successfully at yangbajing in tibet, china since 1999. using the data set collected by this array from 1999 november through 2005 november, we obtained the energy spectrum of gamma-rays from the crab nebula, expressed by a power law as (dj/de) = (2.09 +/- 0.32) x 10(-12)(e/3 tev)(-2.96 +/- 0.14) cm(-2) s(-1) tev(-1) in the energy range of 1.7-40 tev. this result is consistent with other independent gamma-ray observations by imaging air cherenkov telescopes. in this paper, we carefully checked and tuned the performance of the tibet-iii array using data on the moon's shadow in comparison with a detailed monte carlo (mc) simulation. the shadow is shifted to the west of the moon's apparent position as an effect of the geomagnetic field, although the extent of this displacement depends on the primary energy of positively charged cosmic rays. this finding enables us to estimate the systematic error in determining the primary energy from its shower size. this error is estimated to be less than +/- 12% in our experiment. this energy scale estimation is the first attempt among cosmic ray experiments at ground level. the systematic pointing error is also estimated to be smaller than 0 degrees.011. the deficit rate and the position of the moon's shadow are shown to be very stable within a statistical error of +/- 6% year by year. this guarantees the long-term stability of pointlike source observation with the tibet-iii array. these systematic errors are adequately taken into account in our study of the crab nebula. |
WOS关键词 | HELIUM SPECTRA ; GALACTIC PLANE ; SOLAR-ACTIVITY ; ENERGY-RANGE ; NORTHERN SKY ; SEARCH ; EMISSION ; PULSARS ; SUN ; ANTIPROTONS |
WOS研究方向 | Astronomy & Astrophysics |
WOS类目 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000263553000005 |
内容类型 | 期刊论文 |
URI标识 | http://www.corc.org.cn/handle/1471x/2175939 |
专题 | 高能物理研究所 |
通讯作者 | Amenomori, M. |
作者单位 | 1.Hirosaki Univ, Dept Phys, Hirosaki, Aomori 0368561, Japan 2.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China 3.Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan 4.Hebei Normal Univ, Dept Phys, Shijiazhuang 050016, Peoples R China 5.Tibet Univ, Dept Math & Phys, Lhasa 850000, Peoples R China 6.Shandong Univ, Dept Phys, Jinan 250100, Peoples R China 7.SW Jiaotong Univ, Inst Modern Phys, Chengdu 610031, Peoples R China 8.Yunnan Univ, Dept Phys, Kunming 650091, Peoples R China 9.Kanagawa Univ, Fac Engn, Yokohama, Kanagawa 2218686, Japan 10.Utsunomiya Univ, Fac Educ, Utsunomiya, Tochigi 3218505, Japan |
推荐引用方式 GB/T 7714 | Amenomori, M.,Bi, X. J.,Chen, D.,et al. Multi-tev gamma-ray observation from the crab nebula using the tibet-iii air shower array finely tuned by the cosmic ray moon's shadow[J]. Astrophysical journal,2009,692(1):61-72. |
APA | Amenomori, M..,Bi, X. J..,Chen, D..,Cui, S. W..,Danzengluobu.,...&Zhou, X. X..(2009).Multi-tev gamma-ray observation from the crab nebula using the tibet-iii air shower array finely tuned by the cosmic ray moon's shadow.Astrophysical journal,692(1),61-72. |
MLA | Amenomori, M.,et al."Multi-tev gamma-ray observation from the crab nebula using the tibet-iii air shower array finely tuned by the cosmic ray moon's shadow".Astrophysical journal 692.1(2009):61-72. |
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