Acceleration of interstellar pickup protons at the heliospheric termination shock:Voyager 1/2energetic proton fluxes in the inner heliosheath | Zendy

S. V. Chalov | Zendy; Y. G. Malama | Zendy; D. B. Alexashov | Zendy; V. Izmodenov | Zendy

Open Access

Acceleration of interstellar pickup protons at the heliospheric termination shock:Voyager 1/2energetic proton fluxes in the inner heliosheath

Author(s) -

S. V. Chalov,

Y. G. Malama,

D. B. Alexashov,

V. Izmodenov

Publication year - 2015

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/stv2323

Subject(s) - physics , heliosphere , solar wind , energetic neutral atom , interplanetary medium , interstellar medium , bow shock (aerodynamics) , shock (circulatory) , astrophysics , interplanetary spaceflight , magnetohydrodynamics , interplanetary magnetic field , magnetic field , shock wave , astronomy , plasma , nuclear physics , mechanics , medicine , galaxy , quantum mechanics

Fluxes of energetic protons in the range from 30 keV up to several MeV measured at the Voyager 1/2 spacecraft downstream of the heliospheric termination shock can be explained by shock-drift acceleration theory, which includes variations of the magnetic field direction in a vicinity of the shock. The variations can be connected with the sector structure of the interplanetary magnetic field near the solar equatorial plane. Theoretical fluxes of accelerated protons are calculated numerically in the framework of a 3D kinetic-magnetohydrodynamic model of the interaction of the solar wind and local interstellar medium.

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