Nonlinear analysis of solar wind parameters

• Published in: Astrophysics and space science Vol. 365; no. 3
• Main Authors: Kiran, K., Ajithprasad, K. C., Ananda Kumar, V. M., Harikrishnan, K. P.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.03.2020; Springer Nature B.V
• Subjects: Advanced Composition Explorer; Astrobiology; Astronomy; Astrophysics; Astrophysics and Astroparticles; Charged particles; Cosmology; Earth orbits; Flow-density-speed relationships; Interplanetary magnetic field; Magnetic fields; Nonlinear analysis; Nonlinearity; Observations and Techniques; Original Article; Parameters; Physics; Physics and Astronomy; Solar maximum; Solar wind; Solar wind parameters; Solar wind velocity; Space Exploration and Astronautics; Space Sciences (including Extraterrestrial Physics; Time series; Wind speed; White and colored noise; Solar wind parameters; Nonlinear time series analysis
• ISSN: 0004-640X; 1572-946X
• DOI: 10.1007/s10509-020-03757-x

We have analyzed time series of solar wind speed, density, temperature and interplanetary magnetic field observed by ‘Advanced Composition Explorer’ (ACE) at the Earth orbits during solar maximum and minimum using nonlinear time series tools. Evidence for deterministic nonlinearity is present in all solar wind parameters. The dimension of the attractor obtained from each solar wind parameters varies from 2.5 to 4.5. Our result suggests that this variation is due to a different amount of noise in the solar wind parameters. We have also found that the dynamics of solar wind is almost identical during solar maximum and minimum at 1 AU. Our result supports the interaction of neighboring individual flow during its evolution from Sun and 1 AU.