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J. Americo Gonzalez-Esparza started work in solar wind data analyzing in-situ observations of the magnetic field experiment on board Ulysses, which resulted in a Ph.D. thesis in 1995 at the Imperial College-University of London. The thesis had as its main topic the study of interplanetary shock waves and heliospheric large-scale structures (e.g., corotating interaction regions, interplanetary counterparts of coronal mass ejections, heliospheric current sheet crossings, etc.) observed by the Ulysses spacecraft during the first phase of the mission. During this period he also studied the problem of inferring the shock local parameters from the in-situ spacecraft data. During 1995-1997 he worked for two years at the Space Physics Group, Jet Propulsion Laboratory NASA-Caltech, in a postdoctoral project based on the comparison of solar wind observations by different interplanetary missions (Helios 1 & 2, Pioneer 11, Voyager 1 & 2, Ulysses). He also has experience working with numerical simulations of interplanetary shocks and solar wind disturbances. Currently, he is a Reasearcher at the Instituto de Geofisica of the Universidad Nacional Autonoma de Mexico (UNAM) and the Principal Investigator of the Mexican Array Radio Telescope (MEXART), which main scientific object is to perform Interplanetary Scintillation (IPS) observations to study large-scale solar wind disturbances.

Education:

1995-1997 Posdoctoral grant NSF Jet Propulsion Laboratory, NASA-CALTECH

1995 Ph.D. (Space Physics) Imperial College, University of London

1977 B.A. (Physics) Universidad Nacional Autonoma de Mexico (UNAM), Mexico

Recent Research Experience:

1997-current Resident Researcher, Instituto de Geofisica-UNAM.

Selected publications:

Gonzalez-Esparza, J.A., " Numeric simulations of in situ observations of interacting ejecta near 1 AU", Advances in Space Research, Volume 35, p. 2162-2166, doi: 10.1016/j.asr.2005.04.062, 2005.

Canto, J., R. F. Gonzalez, A. C. Raga, E. M. de Gouveia dal Pino, A. Lara, J. A. Gonzalez-Esparza, "The dynamics of velocity fluctuations in the solar wind- I. coronal mass ejections", Mon. Not. R. Astron. Soc., Volume 357, Issue 2, pp. 572-578, doi:10.1111/j.1365-2966.2005.08670.x, 2005.

Gonzalez-Esparza, J.A., A. Santillan, J. Ferrer, "A numerical study of the interaction between two ejecta in the interplanetary medium: one and two dimensional hydrodynamic simulations", Annales Geophysicae, vol. 22, Issue 10, pp. 3741 - 3749, 2004.

Gonzalez-Esparza, J.A., A. Lara, E. Perez-Tijerina, A. Santillan, and N. Gopalswamy, "A numerical study on the accleration and transit time of coronal mass ejections in the interplanetary medium", J. Geophys. Res.-Space Physics, vol. 108 (A1), 1039, doi:10.1029/2001JA009186, 2003.

Gonzalez-Esparza, J.A. "Interplanetary Shocks and Solar Wind Structure Approaching Solar Maximum: Helios, IMP-8 and Voyager Observations", Space Science Reviews, Vol. 97, pp. 197-200, 2001.

Gonzalez-Esparza, J.A., M. Neugebauer,  E.J. Smith, and J.L. Phillips, "Radial evolution of ejecta characteristics and transient shocks: Ulysses in-ecliptic observations", J. Geophys. Res., vol. 103 (A3), 10.1029/97JA03271, pp. 4767-4774, 1998.

Gonzalez-Esparza, J.A. , and  E.J. Smith, "Solar cycle dependence of large-scale solar wind dynamics: Pioneer, Voyager, and Ulysses from 1 to 6 AU", J. Geophys. Res., vol. 101 (A11), pp. 24359-24371, 10.1029/96JA02458, 1996

Gonzalez-Esparza, J.A., A. Balogh, R.J. Forsyth, M. Neugebauer, E.J. Smith, and J.L. Phillips, "Interplanetary shock waves and large-scale structures: Ulysses' observations in and out of the ecliptic plane", J. Geophys. Res., vol. 101 (A8), pp. 17057-17072, 10.1029/96JA00685, 1996 .

Balogh, A., J.A. Gonzalez-Esparza, R.J. Forsyth, M.E. Burton,  B.E. Goldstein, E.J. Smith and S.J. Bame,  "Interplanetary shock waves:  Ulysses observations in and out of the ecliptic plane", Space Sci.  Rev., vol. 72, pp. 171-180, 1995.