Enhancement of Space Plasma Images by Complex Wavelets

Author(s)

Souza, Vitor Moura ^[1] ; Domingues, Margarete Oliveira ^[1] ; Mendes, Odim ^[1] ; Pagamisse, Aylton ^[2] ; Stenborg, Guillermo Adrian ^[3]

Affiliation

^[1] INPE, Sao Paulo - Brazil

^[2] Univ Estadual Paulista, Fac Ciencias & Tecnol, Sao Paulo - Brazil

^[3] George Mason Univ, Coll Sci, Fairfax, VA 22030 - USA

• Document type: Journal article
• Source: Brazilian Journal of Physics; v. 45, n. 5, p. 510-517, OCT 2015.
• Web of Science Citations: 1

Abstract

The Sun is a natural laboratory for plasma processes. A myriad of instruments aboard satellites and on ground record(ed) the plasma emission in different ranges of the electromagnetic spectrum to help understand such processes. In particular, in the outer part of the solar atmosphere, the solar corona, we can observe a multitude of electrodynamical phenomena. There, the faint corona emission and the associated dynamic plasma structures (e.g., coronal mass ejections-CMEs) recorded in white-light images can be used as basis for some insight of this physical scenario. In order to characterize the dynamics and morphology of such structures in a better way, it seems crucial that some features of those images should be enhanced. To deal with this need, a new approach using a complex wavelet transform methodology was developed. With the proposed methodology, we can highlight the plasma ejections improving the identification of those structures. (AU)

• FAPESP's process: 07/07723-7 - Analysis of the electrodynamic coupling features between the solar plasma and earth magnetosphere based on the effect of planetary electric currents
• Grantee: Odim Mendes Junior
• Support type: Regular Research Grants
• FAPESP's process: 14/21229-9 - NUMERICAL AND OBSERVATIONAL ANALYSIS ON THE MACROSCOPIC ASPECT OF THE MAGNETIC RECONNECTION PROCESS AT EARTH'S DAYSIDE MAGNETOPAUSE
• Grantee: Vitor Moura Cardoso e Silva Souza
• Support type: Scholarships in Brazil - Post-Doctorate