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Adolfo Figueroa-Viñas

January 30, 2023

Adolfo Figueroa-Viñas, Ph.D. is the first Puerto Rican astrophysicist at the National Aeronautics and Space Administration (NASA) and is an expert in solar and space plasma physics at the Heliophysics Science Division. As a staff scientist his research interests include studying plasma kinetic physics and magnetohydrodynamics of the solar wind, heliosphere, shock waves, MHD and kinetic simulation of plasma instabilities, and turbulent processes associated with space, solar and astrophysical plasmas.[1]

Adolfo Figueroa-Viñas
Born1 January 1949
Arecibo, Puerto Rico
Alma materUniversity of Puerto Rico
Massachusetts Institute of Technology
Scientific career
FieldsAstrophysicist
InstitutionsGoddard Space Flight Center

Early years

Viñas was born in Arecibo, Puerto Rico. He studied at the University of Puerto Rico-R.U.M. where he received a B.S. and M.S. in physics in 1970 and 1972, respectively. He later studied at the Massachusetts Institute of Technology (MIT), where he received a Ph.D. in physics in 1980. Between 1970 and 1974, he worked as an instructor and assistant professor of physics at the University of Puerto Rico. He joined Goddard Space Flight Center in 1980, where he has held multiple positions. He currently is a staff scientist in the Geospace Physics Laboratory of the Heliophysics Science Division at Goddard. He has served as Adjunct Visiting Physics Professor at the Universidad de Concepcion (Chile), at the Universidade do Estado do Rio de Janeiro (Brazil), and at the Universidad de Alcalá de Henáres-Madrid (Spain).[1]

NASA

Viñas has pioneered methods for the analysis of plasma particle detectors on board spacecraft. He has conceived and developed a technique for the determination of the fluid moments of velocity distribution function in space plasma measurements from particle detectors. This method is currently being tested for implementation on board any satellite CPU processing unit with particle detectors, to reduce the amount of data required to compute the moments on ground with only a small amount of measurements required via telemetry to unpack the physical quantities on ground. Viñas has also pioneer work to resolve the geometrical properties, propagation velocity, and characteristics of shock waves from simple conservation principles. His work has received national and international recognition (known as the Viñas-Scudder Method) because it is the most accurate and robust method for in-situ shock characteristics determination from space plasma measurements. The Viñas-Scudder method have been implemented into an Interactive Data Language (IDL) visualization tool named SDAT (Shock and Discontinuities Analysis Tool) for distribution to the scientific community and investigators interested in shock physics.[1]

Currently

Viñas is a staff astrophysicist at the Geospace Physics Laboratory of the Heliophysics Science Division at the NASA Goddard Space Flight Center. Viñas continues actively in research and lecturing at various national and international research centers and universities, He is also a post-doctoral mentor and adviser to many national and international young scientists. He is currently an active member of the American Physical Society (APS), the American Geophysical Union (AGU), and a founding member of the Latin American Association for Space Geophysics (ALAGE).[1]

Selected publications

  • Viñas, A F; Gurgiolo, C (2009). "Spherical harmonic analysis of particle velocity distribution function: Comparison of moments and anisotropies using Cluster data". Journal of Geophysical Research. 114 (A1): A01105. Bibcode:2009JGRA..114.1105V. doi:10.1029/2008JA013633.
  • Nieves-Chinchilla, T; Viñas, A F (2008). "Kappa-like distribution functions inside magnetic clouds". Geofísica Internacional. 47 (3): 245–249. ISSN 0016-7169.
  • Nieves-Chinchilla, T; Viñas, A F (2008). "Solar wind electron distribution functions inside magnetic clouds". J. Geophys. Res. Space Phys. 113 (A2): A02105. Bibcode:2008JGRA..113.2105N. doi:10.1029/2007JA012703.
  • Burlaga, L F; Viñas, A F; Wang, C (2007). "Tsallis distributions of magnetic field strength variations in the heliosphere: 5 to 90 AU". J. Geophys. Res. Space Phys. 112 (A7): A07206. Bibcode:2007JGRA..112.7206B. doi:10.1029/2006JA012213.
  • Ofman, L; Viñas, A F (2007). "Two-dimensional hybrid model of wave and beam heating of multi-ion solar wind plasma". J. Geophys. Res. Space Phys. 112 (A6): A06104. Bibcode:2007JGRA..112.6104O. doi:10.1029/2006JA012187.
  • Burlaga, L F; Viñas, A F (2007). "Tsallis distribution functions in the solar wind: Magnetic field and velocity observations". AIP Conference Proceedings. 965: 259–266. doi:10.1063/1.2828742.
  • Burlaga, L F; Viñas, A F; Ness, N F; Acuña, M H (2006). "Tsallis statistics of the magnetic field in the heliosheath". Astrophys. J. 644 (1): L83–L86. Bibcode:2006ApJ...644L..83B. doi:10.1086/505577.
  • Viñas, A F; Mace, R L; Benson, R F (2005). "Dispersion characteristics for plasma resonances of Maxwellian and Kappa distribution plasmas and their comparisons to the IMAGE/RPI observations". J. Geophys. Res. Space Phys. 110 (A06202): A06202. Bibcode:2005JGRA..110.6202V. doi:10.1029/2004JA010967.
  • Araneda, J A; Viñas, A F; Astudillo, H F (2002). "Proton core temperature effects on the relative drift and anisotropy evolution of the ion beam instability in the fast solar wind". J. Geophys. Res. Space Phys. 107 (1453): SSH 8–1. Bibcode:2002JGRA..107.1453A. doi:10.1029/2002JA009337. hdl:10533/173396.
  • Viñas, A F; Wong, H K; Klimas, A J (2000). "Generation of electron suprathermal tails in the upper solar atmosphere: Implications for coronal heating". Astrophys. J. 528 (1): 509–523. Bibcode:2000ApJ...528..509V. doi:10.1086/308151.
  • Viñas, A F; Wong, H K; Klimas, A J (1998). "Generation of electron plasma and ion acoustic waves by long wavelength, field aligned electric field fluctuations". Physics of Space Plasmas: Multiscale Phenomena. MIT Center for Theoretical Geo/Cosmo Plasma Physics. 15: 325.
  • Fung, S F; Viñas, A F (1994). "Excitation of high-frequency electromagnetic waves by energetic electrons with a loss cone distribution in a field-aligned potential drop". J. Geophys. Res. 99 (A5): 8671–8686. Bibcode:1994JGR....99.8671F. doi:10.1029/94JA00251. ISSN 0148-0227.
  • Miller, J A; Viñas, A F (1993). "Ion acceleration and abundance enhancements by electron beam instabilities in impulsive solar flares". Astrophys. J. 412 (1): 386–400. Bibcode:1993ApJ...412..386M. doi:10.1086/172928. ISSN 0004-637X.
  • Miller, J A; Viñas, A F; Reames, D V (1993). "Heavy ion acceleration and abundance enhancements in impulsive solar flares". Proceedings of 23rd International Cosmic Ray Conference. 3: 17.
  • Miller, J A; Viñas, A F; Reames, D V (1993). "Selective 3He and Fe acceleration in impulsive solar flares". Proceedings of 23rd International Cosmic Ray Conference. 3: 13.
  • Viñas, A F (1990). "NASA's space physics theory program: An opportunity for collaboration". Proceedings of the Space Conference of the Americas. 2: 54.
  • Viñas, A F; Goldstein, M L (1991). "Parametric instabilities of circularly polarized large-amplitude dispersive Alfvén waves: excitation of parallel-propagating electromagnetic daughter waves". J. Plasma Phys. 46 (1): 107–127. Bibcode:1991JPlPh..46..107V. doi:10.1017/S0022377800015981.
  • Viñas, A F; Goldstein, M L (1991). "Parametric instabilities of circularly polarized large-amplitude dispersive Alfvén waves: excitation of obliquely-propagating electromagnetic daughter waves". J. Plasma Phys. 46 (1): 129–152. Bibcode:1991JPlPh..46..129V. doi:10.1017/S0022377800015993.
  • Leubner, M P; Viñas, A F (1986). "Stability analysis of double-peaked proton distribution functions in the solar wind". J. Geophys. Res. 91 (A12): 13366–13372. Bibcode:1986JGR....9113366L. doi:10.1029/JA091iA12p13366.
  • Viñas, A F; Scudder, J D (1985). "Fast and optimal solution to the 'Rankine-Hugoniot problem'". J. Geophys. Res. 91 (A1): 39–58. Bibcode:1986JGR....91...39V. doi:10.1029/JA091iA01p00039. hdl:2060/19850022411.
  • Viñas, A F; Madden, T R (1985). "Shear flow-ballooning instability as a possible mechanism for hydromagnetic fluctuations". J. Geophys. Res. 91 (A2): 1519–1528. Bibcode:1986JGR....91.1519V. doi:10.1029/JA091iA02p01519.
  • Fairfield, D H; Viñas, A F (1984). "The inner edge of the plasma sheet and the diffuse aurora". J. Geophys. Res. 89 (A2): 841–854. Bibcode:1984JGR....89..841F. doi:10.1029/JA089iA02p00841. hdl:2060/19830024324.
  • Viñas, A F; Goldstein, M L; Acuña, M H (1984). "Spectral analysis of magnetohydrodynamic fluctuations near interplanetary shocks". J. Geophys. Res. 89 (A6): 3762–3774. Bibcode:1984JGR....89.3762V. doi:10.1029/JA089iA06p03762.

See also

References

  1. ^ a b c d "Dr. Adolfo Figueroa Viñas". NASA.gov. October 13, 2006. from the original on 21 March 2009. Retrieved March 23, 2009.
  • López, Margarita Santori (September 15, 2003). "Colegiales en la NASA". Prensa RUM. Retrieved November 9, 2006.

External links

  • Adolfo Figueroa-Viñas profile () at NASA.gov

January 30, 2023
adolfo, figueroa, viñas, first, puerto, rican, astrophysicist, national, aeronautics, space, administration, nasa, expert, solar, space, plasma, physics, heliophysics, science, division, staff, scientist, research, interests, include, studying, plasma, kinetic. Adolfo Figueroa Vinas Ph D is the first Puerto Rican astrophysicist at the National Aeronautics and Space Administration NASA and is an expert in solar and space plasma physics at the Heliophysics Science Division As a staff scientist his research interests include studying plasma kinetic physics and magnetohydrodynamics of the solar wind heliosphere shock waves MHD and kinetic simulation of plasma instabilities and turbulent processes associated with space solar and astrophysical plasmas 1 Adolfo Figueroa VinasBorn1 January 1949Arecibo Puerto RicoAlma materUniversity of Puerto Rico Massachusetts Institute of TechnologyScientific careerFieldsAstrophysicistInstitutionsGoddard Space Flight Center Contents 1 Early years 2 NASA 3 Currently 4 Selected publications 5 See also 6 References 7 External linksEarly years EditVinas was born in Arecibo Puerto Rico He studied at the University of Puerto Rico R U M where he received a B S and M S in physics in 1970 and 1972 respectively He later studied at the Massachusetts Institute of Technology MIT where he received a Ph D in physics in 1980 Between 1970 and 1974 he worked as an instructor and assistant professor of physics at the University of Puerto Rico He joined Goddard Space Flight Center in 1980 where he has held multiple positions He currently is a staff scientist in the Geospace Physics Laboratory of the Heliophysics Science Division at Goddard He has served as Adjunct Visiting Physics Professor at the Universidad de Concepcion Chile at the Universidade do Estado do Rio de Janeiro Brazil and at the Universidad de Alcala de Henares Madrid Spain 1 NASA EditVinas has pioneered methods for the analysis of plasma particle detectors on board spacecraft He has conceived and developed a technique for the determination of the fluid moments of velocity distribution function in space plasma measurements from particle detectors This method is currently being tested for implementation on board any satellite CPU processing unit with particle detectors to reduce the amount of data required to compute the moments on ground with only a small amount of measurements required via telemetry to unpack the physical quantities on ground Vinas has also pioneer work to resolve the geometrical properties propagation velocity and characteristics of shock waves from simple conservation principles His work has received national and international recognition known as the Vinas Scudder Method because it is the most accurate and robust method for in situ shock characteristics determination from space plasma measurements The Vinas Scudder method have been implemented into an Interactive Data Language IDL visualization tool named SDAT Shock and Discontinuities Analysis Tool for distribution to the scientific community and investigators interested in shock physics 1 Currently EditVinas is a staff astrophysicist at the Geospace Physics Laboratory of the Heliophysics Science Division at the NASA Goddard Space Flight Center Vinas continues actively in research and lecturing at various national and international research centers and universities He is also a post doctoral mentor and adviser to many national and international young scientists He is currently an active member of the American Physical Society APS the American Geophysical Union AGU and a founding member of the Latin American Association for Space Geophysics ALAGE 1 Selected publications EditVinas A F Gurgiolo C 2009 Spherical harmonic analysis of particle velocity distribution function Comparison of moments and anisotropies using Cluster data Journal of Geophysical Research 114 A1 A01105 Bibcode 2009JGRA 114 1105V doi 10 1029 2008JA013633 Nieves Chinchilla T Vinas A F 2008 Kappa like distribution functions inside magnetic clouds Geofisica Internacional 47 3 245 249 ISSN 0016 7169 Nieves Chinchilla T Vinas A F 2008 Solar wind electron distribution functions inside magnetic clouds J Geophys Res Space Phys 113 A2 A02105 Bibcode 2008JGRA 113 2105N doi 10 1029 2007JA012703 Burlaga L F Vinas A F Wang C 2007 Tsallis distributions of magnetic field strength variations in the heliosphere 5 to 90 AU J Geophys Res Space Phys 112 A7 A07206 Bibcode 2007JGRA 112 7206B doi 10 1029 2006JA012213 Ofman L Vinas A F 2007 Two dimensional hybrid model of wave and beam heating of multi ion solar wind plasma J Geophys Res Space Phys 112 A6 A06104 Bibcode 2007JGRA 112 6104O doi 10 1029 2006JA012187 Burlaga L F Vinas A F 2007 Tsallis distribution functions in the solar wind Magnetic field and velocity observations AIP Conference Proceedings 965 259 266 doi 10 1063 1 2828742 Burlaga L F Vinas A F Ness N F Acuna M H 2006 Tsallis statistics of the magnetic field in the heliosheath Astrophys J 644 1 L83 L86 Bibcode 2006ApJ 644L 83B doi 10 1086 505577 Vinas A F Mace R L Benson R F 2005 Dispersion characteristics for plasma resonances of Maxwellian and Kappa distribution plasmas and their comparisons to the IMAGE RPI observations J Geophys Res Space Phys 110 A06202 A06202 Bibcode 2005JGRA 110 6202V doi 10 1029 2004JA010967 Araneda J A Vinas A F Astudillo H F 2002 Proton core temperature effects on the relative drift and anisotropy evolution of the ion beam instability in the fast solar wind J Geophys Res Space Phys 107 1453 SSH 8 1 Bibcode 2002JGRA 107 1453A doi 10 1029 2002JA009337 hdl 10533 173396 Vinas A F Wong H K Klimas A J 2000 Generation of electron suprathermal tails in the upper solar atmosphere Implications for coronal heating Astrophys J 528 1 509 523 Bibcode 2000ApJ 528 509V doi 10 1086 308151 Vinas A F Wong H K Klimas A J 1998 Generation of electron plasma and ion acoustic waves by long wavelength field aligned electric field fluctuations Physics of Space Plasmas Multiscale Phenomena MIT Center for Theoretical Geo Cosmo Plasma Physics 15 325 Fung S F Vinas A F 1994 Excitation of high frequency electromagnetic waves by energetic electrons with a loss cone distribution in a field aligned potential drop J Geophys Res 99 A5 8671 8686 Bibcode 1994JGR 99 8671F doi 10 1029 94JA00251 ISSN 0148 0227 Miller J A Vinas A F 1993 Ion acceleration and abundance enhancements by electron beam instabilities in impulsive solar flares Astrophys J 412 1 386 400 Bibcode 1993ApJ 412 386M doi 10 1086 172928 ISSN 0004 637X Miller J A Vinas A F Reames D V 1993 Heavy ion acceleration and abundance enhancements in impulsive solar flares Proceedings of 23rd International Cosmic Ray Conference 3 17 Miller J A Vinas A F Reames D V 1993 Selective 3He and Fe acceleration in impulsive solar flares Proceedings of 23rd International Cosmic Ray Conference 3 13 Vinas A F 1990 NASA s space physics theory program An opportunity for collaboration Proceedings of the Space Conference of the Americas 2 54 Vinas A F Goldstein M L 1991 Parametric instabilities of circularly polarized large amplitude dispersive Alfven waves excitation of parallel propagating electromagnetic daughter waves J Plasma Phys 46 1 107 127 Bibcode 1991JPlPh 46 107V doi 10 1017 S0022377800015981 Vinas A F Goldstein M L 1991 Parametric instabilities of circularly polarized large amplitude dispersive Alfven waves excitation of obliquely propagating electromagnetic daughter waves J Plasma Phys 46 1 129 152 Bibcode 1991JPlPh 46 129V doi 10 1017 S0022377800015993 Leubner M P Vinas A F 1986 Stability analysis of double peaked proton distribution functions in the solar wind J Geophys Res 91 A12 13366 13372 Bibcode 1986JGR 9113366L doi 10 1029 JA091iA12p13366 Vinas A F Scudder J D 1985 Fast and optimal solution to the Rankine Hugoniot problem J Geophys Res 91 A1 39 58 Bibcode 1986JGR 91 39V doi 10 1029 JA091iA01p00039 hdl 2060 19850022411 Vinas A F Madden T R 1985 Shear flow ballooning instability as a possible mechanism for hydromagnetic fluctuations J Geophys Res 91 A2 1519 1528 Bibcode 1986JGR 91 1519V doi 10 1029 JA091iA02p01519 Fairfield D H Vinas A F 1984 The inner edge of the plasma sheet and the diffuse aurora J Geophys Res 89 A2 841 854 Bibcode 1984JGR 89 841F doi 10 1029 JA089iA02p00841 hdl 2060 19830024324 Vinas A F Goldstein M L Acuna M H 1984 Spectral analysis of magnetohydrodynamic fluctuations near interplanetary shocks J Geophys Res 89 A6 3762 3774 Bibcode 1984JGR 89 3762V doi 10 1029 JA089iA06p03762 See also Edit Puerto Rico portal Biography portalList of Puerto Ricans Puerto Rican scientists and inventors University of Puerto Rico at Mayaguez people List of Puerto Ricans in the United States Space ProgramReferences Edit a b c d Dr Adolfo Figueroa Vinas NASA gov October 13 2006 Archived from the original on 21 March 2009 Retrieved March 23 2009 Lopez Margarita Santori September 15 2003 Colegiales en la NASA Prensa RUM Retrieved November 9 2006 External links EditAdolfo Figueroa Vinas profile archived version at NASA gov Retrieved from https en wikipedia org w index php title Adolfo Figueroa Vinas amp oldid 1048278346, wikipedia, wiki, book, books, library,

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