Alfvèn wave Detection at first Lagrangian Point with Magnetic Field Measurements. Issue 1 (2nd January 2020)

• Record Type: Journal Article
• Authors: Yadav, Vipin K.
• Is Part Of: IETE technical review. Volume 37:Issue 1(2020)
• Page Start: 3
• Page End: 11
• Publication Date: 2020-01-02
• Subjects: ACE -- Alfvèn waves -- Fluxgate magnetometer -- Interplanetary magnetic field (IMF) -- Lagrangian point (L1) -- Plasma waves -- Solar plasma -- WIND; Telecommunication -- Periodicals; Electronics -- Periodicals; Electronics; Telecommunication; Periodicals; 621.38
• DOI: 10.1080/02564602.2018.1541767
• Languages: English
• ISSNs: 0256-4602

Abstract

ABSTRACT: Plasma wave is one of the special features of any space plasma system. One such wave, namely Alfvèn wave, is a magnetic disturbance which during its propagation picks ions from the background plasma in such a way that the ions stick to the magnetic field lines moving along the propagation direction. Alfvèn waves are generated in the presence of a strong background magnetic field and are observed emanating from the Sun and are predicted to exist in the interplanetary medium, interstellar medium and supergiant stars. A number of exotic phenomena, including generation of a variety of plasma waves, take place in the vicinity of the sun. However, the in-situ measurements are not possible due to the hostile conditions existing near the Sun. The solar plasma waves emanating from the Sun spread out in all directions and moves towards Earth also. The first Lagrangian (L1) point is an ideal location to study the solar plasma processes remotely. Magnetic field measurements from two missions WIND and ACE operating at the L1 point are analysed to decipher the signatures of plasma waves existing there. The effect of Alfvèn wave on the local magnetic environment is clearly observed from the magnetic field measurements along with the solar wind parameters at the L1 point which are presented in this paper.