NASA Logo Jet Propulsion Laboratory California Institute of Technology View the NASA Portal
NASA Banner
NASA Banner
NASA Banner
JPL HOME EARTH SOLAR SYSTEM STARS & GALAXIES SCIENCE & TECHNOLOGY
NASA Banner
JPL Science
JPL Science Division Home
Planetary Science Planetary Science
Astrophysics & Space Sciences Astrophysics & Space Sciences
Exoplanet Discovery and Science (3262)
Interstellar and Heliospheric Physics (3263)
People
Projects
Structure of the Universe (3266)
Origin of the Universe (3268)
Earth Science Earth Science
Directorate Science Affiliates Directorate Science Affiliates
Open Postdoc Positions Open Postdoc Positions
Brochures Brochures
 Interstellar and Heliospheric Physics (3263): People
Wladimir  Lyra's Picture
Address:
Jet Propulsion Laboratory
M/S 169-506
4800 Oak Grove Drive
Pasadena, CA 91109
Phone:
818.393.2487
Fax:
818.354.8895
Email Contact:

Wladimir Lyra

Education
  • Ph.D. Astronomy, Uppsala University, Sweden (2009)
  • Ph. Lic., Astronomy, Uppsala University, Sweden (2007)
  • B. Sc. Astronomy, Federal University of Rio de Janeiro, Brazil (2003)

Research Interests
  • Planet formation
  • Accretion disks
  • Supercomputing

Professional Experience
  • Sagan Postdoctoral fellow, Jet Propulsion Laboratory (2012 - Present)
  • Postdoctoral fellow, American Museum of Natural History (2009-2011)
  • Research assistant, Max-Planck Institute for Astronomy (2009)
  • Graduate researcher, Uppsala University (2004-2009)
  • Research Assistant, Cerro Tololo Interamerican Observatory (2003-2004)
  • Summer intern, Space Telescope Science Institute (2002)
  • Undergraduate Researcher, Federal University of Rio de Janeiro (2000-2003)

Selected Awards
  • NSF award (2010-2013)
  • Sagan fellowship - NASA Exoplanet Science Institute

Selected Publications
  1. Particle trapping and streaming instability in vortices in protoplanetary disks. Raettig, N., Klahr H., & Lyra, W. 2014, ApJ, accepted.
  2. Rossby wave instability does not require sharp resistivity gradients. Lyra, W., Turner, N.J., McNally, C.P. 2014, A&A, accepted.
  3. Convective overstability in accretion disks: Three-dimensional linear analysis and nonlinear saturation. Lyra, W. 2014, ApJ, 789, 77.
  4. Intermediate mass black holes in AGN disks II. Model predictions and observational constraints. McKernan, B., Ford, K.E.S., Kocsis, B., Lyra, W., Perets, H.B. & Winter, L.M. 2014, MNRAS, 441, 900.
  5. Steady state of dust distributions in disk vortices: Observational predictions and applications to transitional disks., W. Lyra & M.-K. Lin 2013, ApJ, 775, 17.
  6. Formation of sharp eccentric rings in debris disks with gas but without planets. W. Lyra & M. J. Kuchner 2013, Nature, 499, 184.
  7. A parameter study for baroclinic vortex amplification. N. Raettig, W. Lyra, Klahr, H. 2013, ApJ, 765, 115.
  8. Rossby wave instability at dead zone boundaries in 3D resistive magnetohydrodynamical global models of protoplanetary disks. W. Lyra & M.-M. Mac Low 2012, ApJ, 756, 62.
  9. Intermediate mass black holes in AGN disks I. Production and growth. B. McKernan, K.E.S. Ford, W. Lyra, H.B. Perets 2012, MNRAS, 425, 460.
  10. A well-posed Kelvin-Helmholtz instability test and comparison. C. McNally, W. Lyra, J.-C. Passy 2012, ApJS, 201, 18.
  11. On the connection between the magneto-elliptic and magneto-rotational instabilities. K. A. Mizerski & W. Lyra 2012, Journal of Fluid Mechanics, 698, 358.
  12. Orbital migration of interacting low-mass planets in evolutionary radiative turbulent models. B. Horn, W. Lyra, M.-M. Mac Low, Zs. Sándor 2012, ApJ, 750, 34.
  13. On rapid migration and accretion within disks around supermassive black holes. B. McKernan, K.E.S. Ford, W. Lyra, H.B. Perets, L. M. Winter, T. Yaqoob 2011, MNRAS, 417L, 103.
  14. Meridional circulation in turbulent protoplanetary disks. S. Fromang, W. Lyra, F. Masset 2011, A&A, 534, 107.
  15. Formation of planetary cores at Type I migration traps. Zs. Sándor, W. Lyra, C. Dullemond 2011, ApJ, 728L, 9.
  16. The baroclinic instability in the context of layered accretion. Self-sustained vortices and their magnetic stability in local compressible unstratified models of protoplanetary disks.W. Lyra & H. Klahr 2011, A&A, 527, 138.
  17. Orbital migration of low-mass planets in evolutionary radiative models: Avoiding catastrophic infall.W. Lyra, S.-J. Paardekooper, M.-M. Mac Low 2010, ApJ, 715, L68.
  18. Planet formation bursts at the borders of the dead zone in 2D numerical simulations of circumstellar disks. W. Lyra, A. Johansen, A. Zsom, H. Klahr & N. Piskunov 2009, A&A, 497, 869.
  19. Standing on the shoulders of giants: Trojan Earths and vortex trapping in low-mass selfgravitating protoplanetary disks of gas and solids. W. Lyra, A. Johansen, H. Klahr & N. Piskunov 2009, A&A, 493, 1125.
  20. Turbulent stresses as a function of shear rate in a local disk model. A. J. Liljeström, M. J. Korpi, P. J. Käpylä, A. Brandenburg & W. Lyra 2009, AN, 330, 92.
  21. Embyros grown in the dead zone: Assembling the first protoplanetary cores in low-mass selfgravitating circumstellar disks of gas and solids. W. Lyra, A. Johansen, H. Klahr & N. Piskunov 2008, A&A, 491, L41.
  22. The Alpha-Centauri binary system: Atmospheric parameters and element abundances. G .F. Porto de Mello, W. Lyra, & G.R.R. Keller 2008, A&A, 488, 653.
  23. Global magnetohydrodynamical models of turbulence in protoplanetary disks: I. A cylindrical potential on a Cartesian grid and transport of solids. W. Lyra, A. Johansen, H. Klahr & N. Piskunov 2008, A&A, 479, 883.
  24. Spiral structure of the Third Galactic Quadrant and the solution to the Canis Majoris debate. A. Moitinho, R. A. Vázquez, G. Carraro, G. Baume, E. E. Giorgi & W. Lyra 2006, MNRAS, 368, 77.
  25. A comparative study of disc-planet interaction. M. de Val-Borro, R. Edgar, P. Artymowicz, P. Ciecielag, P. Cresswell, G. D'Angelo, E. Delgado-Donate, G. Dirksen, S. Fromang, A. Gawryszczak, H. Klahr, W. Kley, W. Lyra, F. Masset, G. Mellema, R. Nelson, S. J. Paardekooper, A. Peplinski, A. Pierens, T. Plewa, K. Rice, C. Schäfer, R. Speith 2006, MNRAS, 370, 529.
  26. On the difference between nuclear and contraction ages. W. Lyra, A. Moitinho, N. S. van der Bliek, J. Alves 2006, A&A, 453, 101.
  27. A link between stellar metallicity and the semi-major axis of extrasolar planets. R. Pinotti, L. I. Arany-Prado, W. Lyra & G. F. Porto de Mello 2005, MNRAS, 364, 29.
  28. Fine structure of the chromospheric activity in Solar-type stars: The H-alpha line. W. Lyra & G. F. Porto de Mello 2005, A&A, 431, 329.

Group Home Page
People in this Group
Group Projects

JPL Privacy Statement Sitemap Contact Site Manager
FIRST GOV NASA Home Page