title: Anisotropy and corotation of galactic cosmic rays.
abstract: The intensity of Galactic cosmic rays is nearly isotropic because of the influence of magnetic fields in the Milky Way. Here, we present two-dimensional high-precision anisotropy measurement for energies from a few to several hundred teraelectronvolts (TeV), using the large data sample of the Tibet Air Shower Arrays. Besides revealing finer details of the known anisotropies, a new component of Galactic cosmic ray anisotropy in sidereal time is uncovered around the Cygnus region direction. For cosmic-ray energies up to a few hundred TeV, all components of anisotropies fade away, showing a corotation of Galactic cosmic rays with the local Galactic magnetic environment. These results have broad implications for a comprehensive understanding of cosmic rays, supernovae, magnetic fields, and heliospheric and Galactic dynamic environments.
authors.affiliation: Department of Physics, Hirosaki University, Hirosaki 036-8561, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Amenomori
authors.forename: S
authors.initials: S
authors.lastname: Ayabe
authors.forename: X J
authors.initials: XJ
authors.lastname: Bi
authors.forename: D
authors.initials: D
authors.lastname: Chen
authors.forename: S W
authors.initials: SW
authors.lastname: Cui
authors.lastname: Danzengluobu
authors.forename: L K
authors.initials: LK
authors.lastname: Ding
authors.forename: X H
authors.initials: XH
authors.lastname: Ding
authors.forename: C F
authors.initials: CF
authors.lastname: Feng
authors.forename: Zhaoyang
authors.initials: Z
authors.lastname: Feng
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Feng
authors.forename: X Y
authors.initials: XY
authors.lastname: Gao
authors.forename: Q X
authors.initials: QX
authors.lastname: Geng
authors.forename: H W
authors.initials: HW
authors.lastname: Guo
authors.forename: H H
authors.initials: HH
authors.lastname: He
authors.forename: M
authors.initials: M
authors.lastname: He
authors.forename: K
authors.initials: K
authors.lastname: Hibino
authors.forename: N
authors.initials: N
authors.lastname: Hotta
authors.forename: Haibing
authors.initials: H
authors.lastname: Hu
authors.forename: H B
authors.initials: HB
authors.lastname: Hu
authors.forename: J
authors.initials: J
authors.lastname: Huang
authors.forename: Q
authors.initials: Q
authors.lastname: Huang
authors.forename: H Y
authors.initials: HY
authors.lastname: Jia
authors.forename: F
authors.initials: F
authors.lastname: Kajino
authors.forename: K
authors.initials: K
authors.lastname: Kasahara
authors.forename: Y
authors.initials: Y
authors.lastname: Katayose
authors.forename: C
authors.initials: C
authors.lastname: Kato
authors.forename: K
authors.initials: K
authors.lastname: Kawata
authors.lastname: Labaciren
authors.forename: G M
authors.initials: GM
authors.lastname: Le
authors.forename: A F
authors.initials: AF
authors.lastname: Li
authors.forename: J Y
authors.initials: JY
authors.lastname: Li
authors.forename: Y-Q
authors.initials: YQ
authors.lastname: Lou
authors.forename: H
authors.initials: H
authors.lastname: Lu
authors.forename: S L
authors.initials: SL
authors.lastname: Lu
authors.forename: X R
authors.initials: XR
authors.lastname: Meng
authors.forename: K
authors.initials: K
authors.lastname: Mizutani
authors.forename: J
authors.initials: J
authors.lastname: Mu
authors.forename: K
authors.initials: K
authors.lastname: Munakata
authors.forename: A
authors.initials: A
authors.lastname: Nagai
authors.forename: H
authors.initials: H
authors.lastname: Nanjo
authors.forename: M
authors.initials: M
authors.lastname: Nishizawa
authors.forename: M
authors.initials: M
authors.lastname: Ohnishi
authors.forename: I
authors.initials: I
authors.lastname: Ohta
authors.forename: H
authors.initials: H
authors.lastname: Onuma
authors.forename: T
authors.initials: T
authors.lastname: Ouchi
authors.forename: S
authors.initials: S
authors.lastname: Ozawa
authors.forename: J R
authors.initials: JR
authors.lastname: Ren
authors.forename: T
authors.initials: T
authors.lastname: Saito
authors.forename: T Y
authors.initials: TY
authors.lastname: Saito
authors.forename: M
authors.initials: M
authors.lastname: Sakata
authors.forename: T K
authors.initials: TK
authors.lastname: Sako
authors.forename: T
authors.initials: T
authors.lastname: Sasaki
authors.forename: M
authors.initials: M
authors.lastname: Shibata
authors.forename: A
authors.initials: A
authors.lastname: Shiomi
authors.forename: T
authors.initials: T
authors.lastname: Shirai
authors.forename: H
authors.initials: H
authors.lastname: Sugimoto
authors.forename: M
authors.initials: M
authors.lastname: Takita
authors.forename: Y H
authors.initials: YH
authors.lastname: Tan
authors.forename: N
authors.initials: N
authors.lastname: Tateyama
authors.forename: S
authors.initials: S
authors.lastname: Torii
authors.forename: H
authors.initials: H
authors.lastname: Tsuchiya
authors.forename: S
authors.initials: S
authors.lastname: Udo
authors.forename: B
authors.initials: B
authors.lastname: Wang
authors.forename: H
authors.initials: H
authors.lastname: Wang
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: Y G
authors.initials: YG
authors.lastname: Wang
authors.forename: H R
authors.initials: HR
authors.lastname: Wu
authors.forename: L
authors.initials: L
authors.lastname: Xue
authors.forename: Y
authors.initials: Y
authors.lastname: Yamamoto
authors.forename: C T
authors.initials: CT
authors.lastname: Yan
authors.forename: X C
authors.initials: XC
authors.lastname: Yang
authors.forename: S
authors.initials: S
authors.lastname: Yasue
authors.forename: Z H
authors.initials: ZH
authors.lastname: Ye
authors.forename: G C
authors.initials: GC
authors.lastname: Yu
authors.forename: A F
authors.initials: AF
authors.lastname: Yuan
authors.forename: T
authors.initials: T
authors.lastname: Yuda
authors.forename: H M
authors.initials: HM
authors.lastname: Zhang
authors.forename: J L
authors.initials: JL
authors.lastname: Zhang
authors.forename: N J
authors.initials: NJ
authors.lastname: Zhang
authors.forename: X Y
authors.initials: XY
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.lastname: Zhaxisangzhu
authors.forename: X X
authors.initials: XX
authors.lastname: Zhou