Measurement of interplanetary magnetic field in short period using the cosmic-ray Sun shadow measured by LHAASO

the LHAASO Collaboration

Measurement of interplanetary magnetic field in short period using the cosmic-ray Sun shadow measured by LHAASO

the LHAASO Collaboration

CAS - Institute of High Energy Physics
Shandong University
University of Chinese Academy of Sciences
TIANFU Cosmic Ray Research Center
Dublin Institute for Advanced Studies
Max Planck Institute for Nuclear Physics
University of Science and Technology of China
University of Science and Technology of China
Southwest Jiaotong University
Sichuan University
Nanjing University
Guangzhou University
Wuhan University
CAS - Purple Mountain Observatory
Hebei Normal University
CAS - Shanghai Astronomical Observatory
Tibet University
CAS - National Astronomical Observatories
Sun Yat-Sen University
University of Naples Federico II
Yunnan University
University of Geneva
Tsinghua University
Zhengzhou University
Institute for Nuclear Research of the Russian Academy of Sciences
Peking University
Guangxi University
Shanghai Jiao Tong University
Mahidol University
Moscow Institute of Physics and Technology
CAS - National Space Science Center

Research output: Contribution to journal › Conference article › peer-review

Abstract

The interplanetary magnetic field (IMF) between the Sun and the Earth induces the displacement of the cosmic-ray Sun shadow from the optical position. Previously, the average IMF has been measured by the ARGO-YBJ and the Tibet-ASy experiments through several years of data. With the improvement of the sensitivity, the first pool of WCDA in LHAASO, which has been operated since April 2019, and has observed the Sun shadow with significance exceeds 70 standard deviation. Using the data collected by WCDA from July 26 to August 22, 2019, we measured the displacements of Sun shadow at the energy of 6.4TeV every two or three days. Combining with the simulation of Sun shadow, the IMF is measured and is comparable with the satellite observations. This is the first time to measure the IMF using Sun shadow in a short period, and the expectation for space weather forecast is discussed.

Original language	English
Article number	1294
Journal	Proceedings of Science
Volume	395
State	Published - 18 Mar 2022
Externally published	Yes
Event	37th International Cosmic Ray Conference, ICRC 2021 - Virtual, Berlin, Germany Duration: 12 Jul 2021 → 23 Jul 2021

Cite this

@article{b198bdcbf5624aa5ab665d15f8aa5dc6,

title = "Measurement of interplanetary magnetic field in short period using the cosmic-ray Sun shadow measured by LHAASO",

abstract = "The interplanetary magnetic field (IMF) between the Sun and the Earth induces the displacement of the cosmic-ray Sun shadow from the optical position. Previously, the average IMF has been measured by the ARGO-YBJ and the Tibet-ASy experiments through several years of data. With the improvement of the sensitivity, the first pool of WCDA in LHAASO, which has been operated since April 2019, and has observed the Sun shadow with significance exceeds 70 standard deviation. Using the data collected by WCDA from July 26 to August 22, 2019, we measured the displacements of Sun shadow at the energy of 6.4TeV every two or three days. Combining with the simulation of Sun shadow, the IMF is measured and is comparable with the satellite observations. This is the first time to measure the IMF using Sun shadow in a short period, and the expectation for space weather forecast is discussed.",

author = "\{the LHAASO Collaboration\} and Yuncheng Nan and Songzhan Chen and Cunfeng Feng and Zhen Cao and F. Aharonian and Q. An and Axikegu and Bai, \{L. X.\} and Bai, \{Y. X.\} and Bao, \{Y. W.\} and D. Bastieri and Bi, \{X. J.\} and Bi, \{Y. J.\} and H. Cai and Cai, \{J. T.\} and Zhe Cao and J. Chang and Chang, \{J. F.\} and Chen, \{B. M.\} and Chen, \{E. S.\} and J. Chen and Liang Chen and Liang Chan and Long Chen and Chen, \{M. J.\} and Chen, \{M. L.\} and Chen, \{Q. H.\} and Chen, \{S. H.\} and Chen, \{S. Z.\} and Chen, \{T. L.\} and Chen, \{X. L.\} and Y. Chen and N. Cheng and Cheng, \{Y. D.\} and Cui, \{S. W.\} and Cui, \{X. H.\} and Cui, \{Y. D.\} and \{D'Ettorre Piazzoli\}, B. and Dai, \{B. Z.\} and Dai, \{H. L.\} and Dai, \{Z. G.\} and Danzengluobu and \{della Volpe\}, D. and Dong, \{X. J.\} and Duan, \{K. K.\} and Fan, \{J. H.\} and Fan, \{Y. Z.\} and Fan, \{Z. X.\} and J. Fang and Geng, \{L. S.\}",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons.; 37th International Cosmic Ray Conference, ICRC 2021 ; Conference date: 12-07-2021 Through 23-07-2021",

year = "2022",

month = mar,

day = "18",

language = "英语",

volume = "395",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

}

TY - JOUR

T1 - Measurement of interplanetary magnetic field in short period using the cosmic-ray Sun shadow measured by LHAASO

AU - the LHAASO Collaboration

AU - Nan, Yuncheng

AU - Chen, Songzhan

AU - Feng, Cunfeng

AU - Cao, Zhen

AU - Aharonian, F.

AU - An, Q.

AU - Axikegu,

AU - Bai, L. X.

AU - Bai, Y. X.

AU - Bao, Y. W.

AU - Bastieri, D.

AU - Bi, X. J.

AU - Bi, Y. J.

AU - Cai, H.

AU - Cai, J. T.

AU - Cao, Zhe

AU - Chang, J.

AU - Chang, J. F.

AU - Chen, B. M.

AU - Chen, E. S.

AU - Chen, J.

AU - Chen, Liang

AU - Chan, Liang

AU - Chen, Long

AU - Chen, M. J.

AU - Chen, M. L.

AU - Chen, Q. H.

AU - Chen, S. H.

AU - Chen, S. Z.

AU - Chen, T. L.

AU - Chen, X. L.

AU - Chen, Y.

AU - Cheng, N.

AU - Cheng, Y. D.

AU - Cui, S. W.

AU - Cui, X. H.

AU - Cui, Y. D.

AU - D'Ettorre Piazzoli, B.

AU - Dai, B. Z.

AU - Dai, H. L.

AU - Dai, Z. G.

AU - Danzengluobu,

AU - della Volpe, D.

AU - Dong, X. J.

AU - Duan, K. K.

AU - Fan, J. H.

AU - Fan, Y. Z.

AU - Fan, Z. X.

AU - Fang, J.

AU - Geng, L. S.

PY - 2022/3/18

Y1 - 2022/3/18

N2 - The interplanetary magnetic field (IMF) between the Sun and the Earth induces the displacement of the cosmic-ray Sun shadow from the optical position. Previously, the average IMF has been measured by the ARGO-YBJ and the Tibet-ASy experiments through several years of data. With the improvement of the sensitivity, the first pool of WCDA in LHAASO, which has been operated since April 2019, and has observed the Sun shadow with significance exceeds 70 standard deviation. Using the data collected by WCDA from July 26 to August 22, 2019, we measured the displacements of Sun shadow at the energy of 6.4TeV every two or three days. Combining with the simulation of Sun shadow, the IMF is measured and is comparable with the satellite observations. This is the first time to measure the IMF using Sun shadow in a short period, and the expectation for space weather forecast is discussed.

AB - The interplanetary magnetic field (IMF) between the Sun and the Earth induces the displacement of the cosmic-ray Sun shadow from the optical position. Previously, the average IMF has been measured by the ARGO-YBJ and the Tibet-ASy experiments through several years of data. With the improvement of the sensitivity, the first pool of WCDA in LHAASO, which has been operated since April 2019, and has observed the Sun shadow with significance exceeds 70 standard deviation. Using the data collected by WCDA from July 26 to August 22, 2019, we measured the displacements of Sun shadow at the energy of 6.4TeV every two or three days. Combining with the simulation of Sun shadow, the IMF is measured and is comparable with the satellite observations. This is the first time to measure the IMF using Sun shadow in a short period, and the expectation for space weather forecast is discussed.

UR - https://www.scopus.com/pages/publications/85145771432

M3 - 会议文章

AN - SCOPUS:85145771432

SN - 1824-8039

VL - 395

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 1294

T2 - 37th International Cosmic Ray Conference, ICRC 2021

Y2 - 12 July 2021 through 23 July 2021

ER -

Measurement of interplanetary magnetic field in short period using the cosmic-ray Sun shadow measured by LHAASO

Abstract

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