Study of coronal mass ejections and their interplanetary counterparts combining observations of ground cosmic ray detectors and coronagraphs

• Grant number: 12/05436-9
• Support Opportunities: Scholarships in Brazil - Doctorate
• Effective date (Start): December 01, 2012
• Effective date (End): February 28, 2015
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geophysics
• Principal Investigator: Alisson Dal Lago
• Grantee: Carlos Roberto Braga
• Host Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovações (Brasil). São José dos Campos , SP, Brazil
• Associated scholarship(s): 13/02712-8 - Study of interplanetary magnetic structures using cosmic ray data from the global muon detector network, BE.EP.DR

Abstract

This project aims to study coronal mass ejections (CMEs) and their interplanetary counterparts (ICMEs) using observations from both ground-based cosmic ray detectors and coronagraphs. It is known that CMEs are one of the main sources of geomagnetic disturbances (Gosling et al. 1990, 1991), being a central role on space weather research. The combination of ground-based cosmic ray (muon) detectors allow us to determine the tridimensional distribution in the Earth vicinity, as well as its gradients (Okazaki et al. 2008). Preliminary studies indicate that comparing the gradient and density with theoretical models of cosmic ray distribution inside the interplanetary counterparts of CMEs, it is possible to determine geometry and orientation of the structure (Kuwabara et al. 2009). On the other hand, the magnetic cloud, as well as its correspondent solar structure, like a coronal mass ejection, can be studied thanks to use of coronagraphs, like LASCO (Large Angle and Spectroscopic Coronagraph), onboard the SOHO spacecraft and the heliospheric imagers SECCHI (Sun Earth Connection and Heliospheric Investigator), onboard the STEREO twin spacecrafts. Using these instruments it is possible to reconstruct its tridimensional structure. The current project aims to a better understanding of interplanetary structures, since the solar corona up to the Earth's vicinity.

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)

ADHIKARI, BINOD; SAPKOTA, NIRAKAR; BARUWAL, PRASHRIT; CHAPAGAIN, NARAYAN P.; BRAGA, CARLOS ROBERTO. Impacts on Cosmic-Ray Intensity Observed During Geomagnetic Disturbances. SOLAR PHYSICS, v. 292, n. 10, OCT 2017. (13/02712-8, 14/24711-6, 12/05436-9)

BRAGA, CARLOS ROBERTO; DAL LAGO, ALISSON; ECHER, EZEQUIEL; STENBORG, GUILLERMO; SOUZA DE MENDONCA, RAFAEL RODRIGUES. Pseudo-automatic Determination of Coronal Mass Ejections' Kinematics in 3D. ASTROPHYSICAL JOURNAL, v. 842, n. 2, JUN 20 2017. (12/20594-0, 14/24711-6, 13/02712-8, 12/05436-9, 13/03530-0)

KOZAI, M.; MUNAKATA, K.; KATO, C.; KUWABARA, T.; ROCKENBACH, M.; DAL LAGO, A.; SCHUCH, N. J.; BRAGA, C. R.; MENDONCA, R. R. S.; AL JASSAR, H. K.; et al. AVERAGE SPATIAL DISTRIBUTION OF COSMIC RAYS BEHIND THE INTERPLANETARY SHOCK-GLOBAL MUON DETECTOR NETWORK OBSERVATIONS. ASTROPHYSICAL JOURNAL, v. 825, n. 2, JUL 10 2016. (12/20594-0, 08/08840-0, 14/24711-6, 13/02712-8, 12/05436-9, 13/03530-0)