Response of the equatorial and low-latitude ionosphere during the space weather events of April 2002

by W. L. C. Lima, F. Becker-Guedes, Y. Sahai, P. R. Fagundes, J. R. Abalde, G. Crowley, J. A. Bittencourt
Published 2004-09-01

Geomagnetic storm and equatorial spread-F

by F. Becker-Guedes, Y. Sahai, P. R. Fagundes, W. L. C. Lima, V. G. Pillat, J. R. Abalde, J. A. Bittencourt
Published 2004-09-01

Unusual ionospheric effects observed during the intense 28 October 2003 solar flare in the Brazilian sector

by Y. Sahai, F. Becker-Guedes, P. R. Fagundes, W. L. C. Lima, A. J. de Abreu, F. L. Guarnieri, C. M. N. Candido, V. G. Pillat
Published 2007-01-01

Observations and modeling of post-midnight uplifts near the magnetic equator

by M. J. Nicolls, M. C. Kelley, M. N. Vlasov, Y. Sahai, J. L. Chau, D. L. Hysell, P. R. Fagundes, F. Becker-Guedes, W. L. C. Lima
Published 2006-07-01

The ionospheric response in the Brazilian sector during the super geomagnetic storm on 20 November 2003

by F. Becker-Guedes, Y. Sahai, P. R. Fagundes, E. S. Espinoza, V. G. Pillat, W. L. C. Lima, Su. Basu, Sa. Basu, Y. Otsuka, K. Shiokawa, E. M. MacKenzie, X. Pi, J. A. Bittencourt
Published 2007-05-01