IS THE GALACTIC COSMIC-RAY SPECTRUM CONSTANT IN TIME?

被引：4
|
作者：
Eichler, David [1 ]
Kumar, Rahul [1 ]
Pohl, Martin [2 ,3 ]
机构：
[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel
[2] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany
[3] DESY, D-15738 Zeuthen, Germany
来源：
ASTROPHYSICAL JOURNAL | 2013年 / 769卷 / 02期
基金：
以色列科学基金会;
关键词：
cosmic rays; ACCELERATION; ANISOTROPY; EARTH;
D O I：
10.1088/0004-637X/769/2/138
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The hypothesis is considered that the present, local Galactic cosmic-ray spectrum is, due to source intermittency, softer than average over time and over the Galaxy. Measurements of muogenic nuclides underground could provide an independent measurement of the time-averaged spectrum. Source intermittency could also account for the surprising low anisotropy reported by the IceCube Collaboration. Predictions for Galactic emission of ultrahigh-energy (UHE) quanta, such as UHE gamma rays and neutrinos, might be higher or lower than previously estimated.
引用
收藏
页数：4
相关论文
共 50 条
  • [1] Formation of the Cosmic-Ray Halo: Galactic Spectrum of Primary Cosmic Rays
    Dogiel, V. A.
    Ivlev, A. V.
    Chernyshov, D. O.
    Ko, C. -M.
    ASTROPHYSICAL JOURNAL, 2020, 903 (02)
  • [2] Models of Galactic Cosmic-Ray Spectrum during the Solar Cycle
    Buchvarova, M.
    Draganov, D.
    SPACE PLASMA PHYSICS, 2013, 1551
  • [3] The contribution of millisecond pulsars to the Galactic cosmic-ray lepton spectrum
    Venter, Christo
    Kopp, Andreas
    Harding, Alice K.
    Gonthier, Peter L.
    Buesching, Ingo
    ADVANCES IN SPACE RESEARCH, 2015, 55 (05) : 1529 - 1536
  • [4] Stochastic nature of Galactic cosmic-ray sources
    Evoli, Carmelo
    Amato, Elena
    Blasi, Pasquale
    Aloisio, Roberto
    PHYSICAL REVIEW D, 2021, 104 (12)
  • [5] Long-term modulation of the Galactic cosmic-ray fluctuation spectrum
    S. A. Starodubtsev
    I. G. Usoskin
    Astronomy Letters, 2003, 29 : 594 - 598
  • [6] Long-term modulation of the galactic cosmic-ray fluctuation spectrum
    Starodubtsev, SA
    Usoskin, IG
    ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS, 2003, 29 (09): : 594 - 598
  • [7] The Importance of Local Interstellar Conditions on the Galactic Cosmic-Ray Spectrum at Exoplanets
    Jasinski, Jamie M.
    Nordheim, Tom A.
    Hasegawa, Yasuhiro
    Murphy, Neil
    ASTROPHYSICAL JOURNAL LETTERS, 2020, 899 (01)
  • [8] The revival of galactic cosmic-ray nucleosynthesis?
    Fields, BD
    Olive, KA
    ASTROPHYSICAL JOURNAL, 1999, 516 (02) : 797 - 810
  • [9] The Galactic diffuse gamma-ray spectrum from cosmic-ray proton interactions
    Mori, M
    ASTROPHYSICAL JOURNAL, 1997, 478 (01) : 225 - 232
  • [10] Galactic Cosmic-Ray Bombardment of Europa's Surface
    Nordheim, Tom A.
    Jasinski, Jamie M.
    Hand, Kevin P.
    ASTROPHYSICAL JOURNAL LETTERS, 2019, 881 (02)
12345