Forces acting during the propagation of coronal mass ejections

• Grant number: 17/21270-7
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• Start date: March 01, 2018
• End date: February 28, 2019
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geophysics
• Principal Investigator: Alisson Dal Lago
• Grantee: Carlos Roberto Braga
• Supervisor: Angelos Vourlidas
• Host Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovação (Brasil). São José dos Campos , SP, Brazil
• Institution abroad: Johns Hopkins University (JHU), United States
• Associated to the scholarship: 14/24711-6 - Study of coronal mass ejections and its corresponding interplanetary structures near the Earth, BP.PD

Abstract

Coronal mass ejections (CMEs) are the main drivers of geomagnetic storms. Hence, prediction of their arrival time at Earth is of primary interest for understanding and improving Space Weather. To do this it is necessary to understand the forces acting during their propagation from the Sun to the Earth, such as the Lorentz hoop force and the aerodynamic drag. Some models, such as the erupting flux-rope from Chen et al. (1996) and drag-based model have been used to assess these forces and their parameters have been fitted to the observed data to account for the acceleration and deceleration of some CMEs. Although several publications have analyzed the propagation of CMEs, the forces are not completely understood and it remains challenging to anticipate the arrival time of a given CME. This proposal aims to study the force balance of CMEs using observations from the Heliospheric Imagers onboard the STEREO mission. We are specially interested in studying how the flux ropes entrained within CMEs evolve in the inner heliosphere.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

KIHARA, W.; MUNAKATA, K.; KATO, C.; KATAOKA, R.; KADOKURA, A.; MIYAKE, S.; KOZAI, M.; KUWABARA, T.; TOKUMARU, M.; MENDONCA, R. R. S.; et al. A Peculiar ICME Event in August 2018 Observed With the Global Muon Detector Network. SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS, v. 19, n. 3, MAR 2021. (17/21270-7, 14/24711-6, 18/21657-1)

MENDONCA, R. R. S.; WANG, C.; BRAGA, C. R.; ECHER, E.; DAL LAGO, A.; COSTA, J. E. R.; MUNAKATA, K.; LI, H.; LIU, Z.; RAULIN, J-P; et al. Analysis of Cosmic Rays' Atmospheric Effects and Their Relationships to Cutoff Rigidity and Zenith Angle Using Global Muon Detector Network Data. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 124, n. 12, DEC 2019. (17/21270-7, 14/24711-6, 18/21657-1)

BRAGA, CARLOS ROBERTO; VOURLIDAS, ANGELOS; STENBORG, GUILLERMO; DAL LAGO, ALISSON; SOUZA DE MENDONCA, RAFAEL RODRIGUES; ECHER, EZEQUIEL. Predicting the Time of Arrival of Coronal Mass Ejections at Earth From Heliospheric Imaging Observations. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, v. 125, n. 9, SEP 2020. (18/21657-1, 14/24711-6, 17/21270-7)