Direct evidence of the interplanetary magnetic field effect on the cosmic-ray shadow by the Sun

M. Amenomori, Z. Cao, L. K. Ding, Z. Y. Feng, K. Hibino, N. Hotta, Q. Huang, A. X. Huo, H. G. Jia, G. Z. Jiang, S. Q. Jiao, F. Kajino, K. Kasahara, Labaciren, D. M. Mei, L. Meng, X. R. Meng, Mimaciren, K. Mizutani, J. MuH. Nanjo, M. Nishizawa, Nusang, A. Oguro, M. Ohnishi, I. Ohta, T. Ouchi, J. R. Ren, T. Saito, M. Sakata, Z. Z. Shi, M. Shibata, T. Shirai, H. Sugimoto, X. X. Sun, K. Taira, Y. H. Tan, N. Tateyama, Shoji Torii, H. Wang, C. Z. Wen, Y. Yamamoto, X. Y. Yao, G. C. Yu, P. Yuan, T. Yuda, J. G. Zeng, C. S. Zhang, H. M. Zhang, L. Zhang, Zhasang, Zhaxiciren, W. D. Zhou

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The Tibet air-shower array, being successively operated at an altitude of 4300 m above sea level since 1990, has detected the shadows of the Sun and Moon in the 10 TeV cosmic-ray flux. In particular, the shadow of the Sun was observed in the direction significantly away from the apparent solar position, under the influence of the solar and interplanetary magnetic fields. A further analysis shows that the shadows by cosmic rays coming from the away and toward field sectors in the interplanetary space are shifted in opposite directions to one another according to the polarity of the fields. This is the first direct observation of the influence of the interplanetary magnetic field on the shadow's displacement. The results imply that observation of the cosmic-ray shadow by the Sun can produce new information on the relation between a time variation of the large-scale structure of the solar and interplanetary magnetic fields and the cycle of solar activity.

Original languageEnglish
JournalAstrophysical Journal
Volume415
Issue number2 PART 2
Publication statusPublished - 1993 Oct 1
Externally publishedYes

Fingerprint

interplanetary magnetic fields
cosmic ray
cosmic rays
sun
magnetic field
solar magnetic field
solar position
solar activity
Moon
interplanetary space
Tibet
sea level
cosmic ray showers
moon
air
polarity
sectors
effect
cycles

Keywords

  • Magnetic fields
  • Solar wind
  • Solar-terrestrial relations
  • Sun: cosmic rays

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Amenomori, M., Cao, Z., Ding, L. K., Feng, Z. Y., Hibino, K., Hotta, N., ... Zhou, W. D. (1993). Direct evidence of the interplanetary magnetic field effect on the cosmic-ray shadow by the Sun. Astrophysical Journal, 415(2 PART 2).

Direct evidence of the interplanetary magnetic field effect on the cosmic-ray shadow by the Sun. / Amenomori, M.; Cao, Z.; Ding, L. K.; Feng, Z. Y.; Hibino, K.; Hotta, N.; Huang, Q.; Huo, A. X.; Jia, H. G.; Jiang, G. Z.; Jiao, S. Q.; Kajino, F.; Kasahara, K.; Labaciren; Mei, D. M.; Meng, L.; Meng, X. R.; Mimaciren; Mizutani, K.; Mu, J.; Nanjo, H.; Nishizawa, M.; Nusang; Oguro, A.; Ohnishi, M.; Ohta, I.; Ouchi, T.; Ren, J. R.; Saito, T.; Sakata, M.; Shi, Z. Z.; Shibata, M.; Shirai, T.; Sugimoto, H.; Sun, X. X.; Taira, K.; Tan, Y. H.; Tateyama, N.; Torii, Shoji; Wang, H.; Wen, C. Z.; Yamamoto, Y.; Yao, X. Y.; Yu, G. C.; Yuan, P.; Yuda, T.; Zeng, J. G.; Zhang, C. S.; Zhang, H. M.; Zhang, L.; Zhasang; Zhaxiciren; Zhou, W. D.

In: Astrophysical Journal, Vol. 415, No. 2 PART 2, 01.10.1993.

Research output: Contribution to journalArticle

Amenomori, M, Cao, Z, Ding, LK, Feng, ZY, Hibino, K, Hotta, N, Huang, Q, Huo, AX, Jia, HG, Jiang, GZ, Jiao, SQ, Kajino, F, Kasahara, K, Labaciren, Mei, DM, Meng, L, Meng, XR, Mimaciren, Mizutani, K, Mu, J, Nanjo, H, Nishizawa, M, Nusang, Oguro, A, Ohnishi, M, Ohta, I, Ouchi, T, Ren, JR, Saito, T, Sakata, M, Shi, ZZ, Shibata, M, Shirai, T, Sugimoto, H, Sun, XX, Taira, K, Tan, YH, Tateyama, N, Torii, S, Wang, H, Wen, CZ, Yamamoto, Y, Yao, XY, Yu, GC, Yuan, P, Yuda, T, Zeng, JG, Zhang, CS, Zhang, HM, Zhang, L, Zhasang, Zhaxiciren & Zhou, WD 1993, 'Direct evidence of the interplanetary magnetic field effect on the cosmic-ray shadow by the Sun', Astrophysical Journal, vol. 415, no. 2 PART 2.
Amenomori M, Cao Z, Ding LK, Feng ZY, Hibino K, Hotta N et al. Direct evidence of the interplanetary magnetic field effect on the cosmic-ray shadow by the Sun. Astrophysical Journal. 1993 Oct 1;415(2 PART 2).
Amenomori, M. ; Cao, Z. ; Ding, L. K. ; Feng, Z. Y. ; Hibino, K. ; Hotta, N. ; Huang, Q. ; Huo, A. X. ; Jia, H. G. ; Jiang, G. Z. ; Jiao, S. Q. ; Kajino, F. ; Kasahara, K. ; Labaciren ; Mei, D. M. ; Meng, L. ; Meng, X. R. ; Mimaciren ; Mizutani, K. ; Mu, J. ; Nanjo, H. ; Nishizawa, M. ; Nusang ; Oguro, A. ; Ohnishi, M. ; Ohta, I. ; Ouchi, T. ; Ren, J. R. ; Saito, T. ; Sakata, M. ; Shi, Z. Z. ; Shibata, M. ; Shirai, T. ; Sugimoto, H. ; Sun, X. X. ; Taira, K. ; Tan, Y. H. ; Tateyama, N. ; Torii, Shoji ; Wang, H. ; Wen, C. Z. ; Yamamoto, Y. ; Yao, X. Y. ; Yu, G. C. ; Yuan, P. ; Yuda, T. ; Zeng, J. G. ; Zhang, C. S. ; Zhang, H. M. ; Zhang, L. ; Zhasang ; Zhaxiciren ; Zhou, W. D. / Direct evidence of the interplanetary magnetic field effect on the cosmic-ray shadow by the Sun. In: Astrophysical Journal. 1993 ; Vol. 415, No. 2 PART 2.
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title = "Direct evidence of the interplanetary magnetic field effect on the cosmic-ray shadow by the Sun",
abstract = "The Tibet air-shower array, being successively operated at an altitude of 4300 m above sea level since 1990, has detected the shadows of the Sun and Moon in the 10 TeV cosmic-ray flux. In particular, the shadow of the Sun was observed in the direction significantly away from the apparent solar position, under the influence of the solar and interplanetary magnetic fields. A further analysis shows that the shadows by cosmic rays coming from the away and toward field sectors in the interplanetary space are shifted in opposite directions to one another according to the polarity of the fields. This is the first direct observation of the influence of the interplanetary magnetic field on the shadow's displacement. The results imply that observation of the cosmic-ray shadow by the Sun can produce new information on the relation between a time variation of the large-scale structure of the solar and interplanetary magnetic fields and the cycle of solar activity.",
keywords = "Magnetic fields, Solar wind, Solar-terrestrial relations, Sun: cosmic rays",
author = "M. Amenomori and Z. Cao and Ding, {L. K.} and Feng, {Z. Y.} and K. Hibino and N. Hotta and Q. Huang and Huo, {A. X.} and Jia, {H. G.} and Jiang, {G. Z.} and Jiao, {S. Q.} and F. Kajino and K. Kasahara and Labaciren and Mei, {D. M.} and L. Meng and Meng, {X. R.} and Mimaciren and K. Mizutani and J. Mu and H. Nanjo and M. Nishizawa and Nusang and A. Oguro and M. Ohnishi and I. Ohta and T. Ouchi and Ren, {J. R.} and T. Saito and M. Sakata and Shi, {Z. Z.} and M. Shibata and T. Shirai and H. Sugimoto and Sun, {X. X.} and K. Taira and Tan, {Y. H.} and N. Tateyama and Shoji Torii and H. Wang and Wen, {C. Z.} and Y. Yamamoto and Yao, {X. Y.} and Yu, {G. C.} and P. Yuan and T. Yuda and Zeng, {J. G.} and Zhang, {C. S.} and Zhang, {H. M.} and L. Zhang and Zhasang and Zhaxiciren and Zhou, {W. D.}",
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TY - JOUR

T1 - Direct evidence of the interplanetary magnetic field effect on the cosmic-ray shadow by the Sun

AU - Amenomori, M.

AU - Cao, Z.

AU - Ding, L. K.

AU - Feng, Z. Y.

AU - Hibino, K.

AU - Hotta, N.

AU - Huang, Q.

AU - Huo, A. X.

AU - Jia, H. G.

AU - Jiang, G. Z.

AU - Jiao, S. Q.

AU - Kajino, F.

AU - Kasahara, K.

AU - Labaciren,

AU - Mei, D. M.

AU - Meng, L.

AU - Meng, X. R.

AU - Mimaciren,

AU - Mizutani, K.

AU - Mu, J.

AU - Nanjo, H.

AU - Nishizawa, M.

AU - Nusang,

AU - Oguro, A.

AU - Ohnishi, M.

AU - Ohta, I.

AU - Ouchi, T.

AU - Ren, J. R.

AU - Saito, T.

AU - Sakata, M.

AU - Shi, Z. Z.

AU - Shibata, M.

AU - Shirai, T.

AU - Sugimoto, H.

AU - Sun, X. X.

AU - Taira, K.

AU - Tan, Y. H.

AU - Tateyama, N.

AU - Torii, Shoji

AU - Wang, H.

AU - Wen, C. Z.

AU - Yamamoto, Y.

AU - Yao, X. Y.

AU - Yu, G. C.

AU - Yuan, P.

AU - Yuda, T.

AU - Zeng, J. G.

AU - Zhang, C. S.

AU - Zhang, H. M.

AU - Zhang, L.

AU - Zhasang,

AU - Zhaxiciren,

AU - Zhou, W. D.

PY - 1993/10/1

Y1 - 1993/10/1

N2 - The Tibet air-shower array, being successively operated at an altitude of 4300 m above sea level since 1990, has detected the shadows of the Sun and Moon in the 10 TeV cosmic-ray flux. In particular, the shadow of the Sun was observed in the direction significantly away from the apparent solar position, under the influence of the solar and interplanetary magnetic fields. A further analysis shows that the shadows by cosmic rays coming from the away and toward field sectors in the interplanetary space are shifted in opposite directions to one another according to the polarity of the fields. This is the first direct observation of the influence of the interplanetary magnetic field on the shadow's displacement. The results imply that observation of the cosmic-ray shadow by the Sun can produce new information on the relation between a time variation of the large-scale structure of the solar and interplanetary magnetic fields and the cycle of solar activity.

AB - The Tibet air-shower array, being successively operated at an altitude of 4300 m above sea level since 1990, has detected the shadows of the Sun and Moon in the 10 TeV cosmic-ray flux. In particular, the shadow of the Sun was observed in the direction significantly away from the apparent solar position, under the influence of the solar and interplanetary magnetic fields. A further analysis shows that the shadows by cosmic rays coming from the away and toward field sectors in the interplanetary space are shifted in opposite directions to one another according to the polarity of the fields. This is the first direct observation of the influence of the interplanetary magnetic field on the shadow's displacement. The results imply that observation of the cosmic-ray shadow by the Sun can produce new information on the relation between a time variation of the large-scale structure of the solar and interplanetary magnetic fields and the cycle of solar activity.

KW - Magnetic fields

KW - Solar wind

KW - Solar-terrestrial relations

KW - Sun: cosmic rays

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