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Apurva Oza

Photo of Apurva Oza

Address:

4800 Oak Grove Drive

M/S 183-301

Pasadena, CA 91109

Phone:

626.344.1255

Curriculum Vitae:

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Website:

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Member of:

Small Bodies

Biography

Apurva Oza is an [exo]planetary astrophysicist working in the Small Bodies group at JPL/Caltech to better understand the physical properties of Jupiter’s volcanic satellite Io while also leading an international quest to search for small bodies orbiting nearby planetary systems (e.g. exo-Ios). Inspired by the gravitational tides and electromagnetic ions that are actively melting and evaporating the Laplacian satellite surfaces (Io, Europa, and Ganymede), Oza and his then undergraduate student (A. Gebek; U Ghent) developed a unique technique ‘evaporative transmission spectroscopy’ to illuminate powerful volcanic and plasma signatures venting from otherwise hidden exomoons & exorings. Hence, Desorbing Interiors via Satellite Heating to Observe Outgassing Model (DISHOOM) has now been developed to continue Oza’s all sky exoplanet survey (embarked at the University of Virginia) using ground and space based spectrographs, altogether benchmarked to in-situ infrared spectrograph data from JPL’s JUNO/JIRAM camera currently at Jupiter.

Oza’s PhD thesis entitled ‘Detection and Dynamics of Satellite Exospheres’ at the Sorbonne Université in Paris, France described the first evidence of diurnal atmospheric evolution on Europa and Ganymede via a dusk-over-dawn O2 asymmetry identified by HST.

At the University of Bern, Switzerland, Oza developed a new curriculum for the graduate course ‘Planet Formation and Evolution’ where he was part of the ‘Planets in Time’ group studying sub-Neptune to super-Earth evolution. Full circle, Oza’s 1st planet project was also on small bodies where he studied the volatile loss and evolution of the distant and mysterious Kuiper Belt Objects.

Education

  • Sorbonne Université: PhD Astronomy & Astrophysics (2017);
  • University of Virginia: M.S. Astronomy (2014);
  • University of North Carolina at Chapel Hill: B.S. Physics & Astronomy summa cum laude (2012)

Professional Experience

  • Visiting Lecturer, University of Bern (2020 - )
  • Postdoctoral Researcher , Physikalisches Institut, Universität Bern (2017-2020)

Community Service

Research Interests

  • Extrasolar Volcanism
  • Tides
  • Atmospheric escape/evolution
  • Exomoons & Exoplanets
  • Io, Europa, Ganymede
  • Spectroscopy

Selected Awards

  • 2nd place presentation , National Solar & Terrestrial Conference (PNST) Hendaye, France (2016)
  • Hearst Fellowship in the Biological and Physical Sciences, UVA (2013-2014)
  • Robert Shelton Award for Outstanding Research, UNC Department of Physics & Astronomy North Carolina, USA (2012)
  • NASA Space Grant Research Fellowship (2009-2012), North Carolina, USA
  • Best Undergraduate Poster, American Physical Society (2007)

Selected Publications

FIRST & DUAL-AUTHOR PEER-REVIEWED PUBLICATIONS

  1. A.V. Oza, D J. Bower, B.-O. Demory, K. Hakim, S. Carberry-Mogan , A. Ridden-Harper, E. Lellouch, N. Jggi, C.Dorn, H. J. Hoeijmakers, S. Charnoz, T. Bertrand, S. S. Suriano, D. U. Gamborino, Y.Alibert, and C. Mordasini Currently Active Extrasolar Volcanism and Volatile Evolution on a Super-Io Orbiting 55 Cancri A. 2021 in prep.
  2. A.V. Oza & C. Mordasini Planet Evolution with Atmospheric Photoevaporation II: Sub-Neptune to Super-Earth Transition Triggered by a Critical Energy Column Density Regardless of Stellar Type . 2021, Astronomy & Astrophysics, in prep.
  3. A.Gebek & A.V. Oza. Alkaline Exospheres of Exoplanet Systems: Evaporative Transmission Spectra. 2020, Monthly Notices of the Royal Astronomical Society, Volume 497, Issue 4, Pages 5271–5291 https://doi.org/10.1093/mnras/staa2193
  4. A.V. Oza, R.E. Johnson, E. Lellouch, C.Schmidt, N.Schneider, C.Huang, D.Gamborino, A.Gebek, A.Wyttenbach, B.-O. Demory, C.Mordasini, P. Saxena, D.Dubois, A.Moullet, and N.Thomas. Sodium and Potassium Signatures of Volcanic Satellites Orbiting Close-in Gas Giant Exoplanets. 2019, The Astrophysical Journal, 885(2), 168. https://iopscience.iop.org/article/10.3847/1538-4357/ab40cc
  5. R.E. Johnson, A.V. Oza, F.Leblanc, C.Schmidt, T.A. Nordheim, and T.A. Cassidy. The Origin and Fate of O2 in Europa’s Ice: An Atmospheric Perspective. 2019, Space Science Reviews, 215(1), 20. https://link.springer.com/article/10.1007%2Fs11214-019-0582-1
  6. A.V. Oza, F. Leblanc, R.E. Johnson, C. Schmidt, L. Leclercq, T.A. Cassidy, and J.Y. Chaufray. Dusk-Over Dawn O2 Asymmetry in Europa‘s Near-Surface Atmosphere. 2019, Planetary and Space Science, 167, 23-32. https://doi.org/10.1016/j.pss.2019.01.006
  7. A.V. Oza, R.E. Johnson, and F. Leblanc. Dusk/dawn atmospheric asymmetries on tidally-locked satellites: O2 at Europa. 2018, Icarus, Volume 305, p.50-55. https://doi.org/10.1016/j.icarus.2017.12.032
  8. F. Leblanc, A.V. Oza, L. Leclercq, C. Schmidt, T.A. Cassidy, R. Modolo, J.Y. Chaufray, and R.E. Johnson. On the Orbital Variability of Ganymede’s Atmosphere. 2017, Icarus 293, 185-198. https://doi.org/10.1016/j.icarus.2017.04.025
  9. R. E. Johnson, A.V. Oza, L. A. Young, A. N. Volkov, and C. Schmidt. Volatile Loss and Classification of Kuiper Belt Objects. 2015, The Astrophysical Journal, Volume 809, Issue 1, article id. 43, 9 pp.

PEER-REVIEWED GROUP PUBLICATIONS

  1. LIFE collaboration et al. incl. A.V. Oza . Large Interferometer For Exoplanets (LIFE): I. Improved exoplanet detection yield estimates for a large mid-infrared space-interferometer mission 2021, eprint arXiv:2101.07500, Astronomy & Astrophysics, in review.
  2. T. Bertrand, E. Lellouch, B.J. Holler et al. incl. A.V. Oza . Volatile Transport Modeling on Triton With New Observational Constraints 2021, Icarus, in press.
  3. N. Jäggi et al. incl. A.V. Oza . Evolution of Mercury’s Earliest Atmosphere 2021, Planetary Science Journal, in press.
  4. S. Charnoz et al. incl. A.V. Oza . Tidal pull of the Earth strips the proto-Moon of its volatiles. 2021, Icarus, Volume 364, 114451. https://doi.org/10.1016/j.icarus.2021.114451
  5. H. Jens Hoeijmakers et al. incl. A.V. Oza . Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS). IV. A spectral inventory of atoms and molecules in the high-resolution transmission spectrum of WASP-121 b. 2020, Astronomy & Astrophysics, Volume 641, id.A123, 26 pp https://doi.org/10.1051/0004-6361/202038365
  6. D.J. Bower et al. and A.V. Oza Linking the evolution of terrestrial interiors and an early outgassed atmosphere to astrophysical observations. 2019, Astronomy & Astrophysics, Volume 631, A103. https://doi.org/10.1051/0004-6361/201935710
  7. J. Stone, A. Skemer, P. Hinz, et al. incl. A.V. Oza The LEECH Exoplanet Imaging Survey: Limits on Planet Occurrence Rates Under Conservative Assumptions. 2018, The Astronomical Journal, 156 (6), 286.
  8. A.Skemer, C. Morley, N. Zimmerman, et al. incl. A.V. Oza. The LEECH Exoplanet Imaging Survey: Characterization of the Coldest Directly Imaged Exoplanet, GJ 504 b, and Evidence for Superstellar Metallicity. 2016, The Astrophysical Journal, Volume 817, Issue 2, article id. 166, 10 pp.
  9. A.-L Maire, A. Skemer, P.M. Hinz, et al. incl. A.V.Oza. The LEECH Exoplanet Imaging Survey. Further constraints on the planet architecture of the HR 8799 system. 2015, Astronomy & Astrophysics, Volume 576, id.A133, 10 pp.
  10. Edward L. Wright, J. Davy Kirkpatrick, Christopher R. Gelino, Sergio Fajardo-Acosta, Gregory Mace, Peter R. Eisenhardt, Daniel Stern, Ian S. McLean, M. F. Skrutskie, Apurva V. Oza, M. J. Nelson, Michael C. Cushing, I. Neil Reid, Michele Fumagalli, Adam J. Burgasser. The First AllWISE Proper Motion Discovery: WISEA J070720.50+170532.7. 2014, The Astronomical Journal ,Volume 147, Issue 3, article id. 61, 8.
  11. P. Petit, F. Ligniéres, G.A. Wade, M. Auriére, D. Alina, T. Böhm, A.V. Oza. Weak magnetic fields of intermediate-mass stars. 2011, Astronomische Nachrichten, Vol.332, Issue 9/10, p.943.
  12. P. Petit, F. Ligniéres, M. Auriére, G.A. Wade, D. Alina, J. Ballot, T. Böhm, L. Jouve, A.V. Oza, F. Paletou, S. Théado. Detection of a weak surface magnetic field on Sirius A: are all tepid stars magnetic? 2011, Astronomy & Astrophysics, Volume 532, id.L13.

CONFERENCE PROCEEDINGS & SELECTED PRESENTATIONS

  1. Oza, Apurva V. On the Origin of Evaporating Metals at Exoplanet Systems: Evaporating Exomoons? (Invited Virtual) NYU, Space Science Series, Abu Dhabi (Dec. 2020).
  2. Apurva V. Oza. and Robert E. Johnson. A common origin of oxygen at Jupiter’s icy moons and comets: Modeling thermal outgassing at Europa. (Talk), AAS Division of Planetary Science meeting 52, id. 215.01. Bulletin of the American Astronomical Society, Vol. 52, No. 6. (Oct. 2020)
  3. D. Dubois, Apurva V. Oza., and J. Radebaugh. The Sulfur Conundrum on Titan: Cryovolcanism, Outgassing, and Chemical Impact on the Atmosphere. AAS Division of Planetary Science meeting 52, id. 218.04. Bulletin of the American Astronomical Society, Vol. 52, No. 6. (Oct. 2020)
  4. Gamborino, D. et al. including Oza, A.V.. A Magma Ocean Origin for Mercury’s Earliest Exosphere. 14th Europlanet Science Congress 2020, held virtually, id. EPSC2020-571 (Sep. 2020).
  5. Oza, Apurva V. Observing Above Exoplanets: Sodium Signatures of Volcanically-Active Exomoons. (Invited Virtual) Tata Institute for Fundamental Research, TIFR Seminar, Mumbai, India (Sep. 2020).
  6. Oza, A.V., Charnoz, S., and Johnson, R.E. Detection of Exomoons or Debris Orbiting Exoplanets. Exoplanets in Our Backyard: Solar System and Exoplanet Synergies on Planetary MAY 25, 2021 APURVA V. OZA · RÉSUMÉ 5 Formation, Evolution, and Habitability (Feb. 2020)
  7. Rubin, M. et al. including Oza, A.V. Irradiation of water ice samples in the laboratory: Implications for surface processes on icy moons and comets AGU Fall Meeting Abstracts (Dec. 2019)
  8. Oza, A.V. & Mordasini, C. Planetary Evolution Driven by Atmospheric Escape: Sub-Neptune to Super-Earth Transition over a Range of Stellar Types (Talk). DPS/EPSC, Geneva (Sep. 2019)
  9. Oza, A.V. et al. 2019. Extrasolar Volcanic Activity on the Magmatic Super Earth 55 Cancri-e (Poster). DPS/EPSC, Geneva (Sep. 2019)
  10. Gebek, A. & Oza, A.V.. Nonhydrostatic Density Profiles of Sodium & Potassium at Close-in Gas Giant Exoplanets (Talk) DPS/EPSC, Geneva (Sep. 2019)
  11. Leblanc, F. et al. 2019 including Oza, A.V.. Modelling of Europa’s Plume (Poster). DPS/EPSC, Geneva (Sep. 2019)
  12. Gamborino,D. et al. 2019 including Oza, A.V.. Silicate Atmospheres: A study of proto-Mercury (Poster). DPS/EPSC, Geneva (Sep. 2019)
  13. Bower, D.J. et al. 2019 including Oza, A.V.. Linking the evolution of terrestrial interiors and an early outgassed atmosphere to astrophysical observations (Poster). DPS/EPSC, Geneva (Sep. 2019)
  14. Galli, A. et al. 2019 including Oza, A.V.. Laboratory analogues for the icy moons of Jupiter – The added value of a time-of-flight mass spectrometer (Poster). DPS/EPSC, Geneva (Sep. 2019)
  15. Johnson, R.E. & Oza, A.V. Sodium Signatures of Satellites Orbiting Close-in Gas Giant Exoplanets (Solicited Talk). DPS/EPSC, Geneva (Sep. 2019)
  16. Bolmont, E., Oza, A.V., et al. 2019. Survival of satellites during the migration of a Hot Jupiter: the influence of tides (Talk). DPS/EPSC, Geneva (Sep. 2019)
  17. Oza, A.V. et al. 2019. Alkaline Signatures of Active Exomoons (Poster). Extreme Solar Systems IV, Reykjavik, Iceland.
  18. Oza, A.V. & C. Dorn et al. 2019 . A New Class of Super-Earths (Talk). Extreme Solar Systems IV, Reykjavik, Iceland.
  19. Oza, A.V. et al. 2019. Rocky Exomoon Signatures Hidden in the Spectra of Close-in Gas Giant Exoplanets. (Invited Talk) Indian Institute of Astrophysics, Seminar, Bangalore, India.
  20. Apurva V. Oza 2019. Evaporating Exomoons. (Talk) University of Chicago, Chicago, USA.
  21. Oza, A.V. et al. 2019. Illuminating the Magnetospheres of Close-in Giant Exoplanets: Metallic Signatures of Volcanic Exomoons. (Invited Talk) Raman Research Institute, Bangalore, India.
  22. Oza, A.V. et al. 2018. Na & K at Close-in Exoplanets: Evidence for Geologically-Active Satellites? (Talk) New York University, New York, USA.
  23. Oza, A.V. et al. 2018. O2 Outgassing at Icy Satellites and Comets. (Talk) American Astronomical Society, DPS meeting 50, id.403.03
  24. Oza, A.V. et al. 2018. Exogenic Volatiles in the Extended Exospheres of Extrasolar Giant Planets. (Talk) European Planetary Science Congress, Berlin, Germany.
  25. Oza, A.V. et al. 2018. Distinguishing Exogenic and Endogenic Volatiles in Extrasolar Giant Planet Exospheres. (Invited Talk) NASA Goddard, Maryland.
  26. Oza, A.V. et al. 2018. Volcanic Extrasolar Satellite Signatures. (Invited Talk) Observatory of Geneva, Switzerland.
  27. Galli, A. et al. 2018 including Oza, A.V. Simulating the plasma - ice interaction in the lab for Jupiter’s icy moons 20th EGU General Assembly, EGU2018, Proceedings from the conference held 4-13 April, 2018 in Vienna, Austria, p.4802
  28. Apurva V. Oza. Outgassing Ocean Worlds. (Invited Talk) Indian Space Research Organization (ISRO), PRL, Ahmedebad, India, Jan. 2018.
  29. Oza, A.V. et al. 2017. Atmospheric Bulges on Tidally-Locked Satellites. (Talk) American Astronomical Society, DPS meeting 49, id.203.12 MAY 25, 2021 APURVA V. OZA · RÉSUMÉ 6
  30. Oza, A.V. et al. 2017. Rotation-Driven Icy Galilean Satellite Exospheres. (Invited Talk) Center for Space and Habitability. Bern, Switzerland
  31. Oza, A.V. et al. 2017. Les Bosses Atmospheriques. (Invited Talk) LESIA. Meudon, France.
  32. Oza, A.V. et al. 2017. Europa and Ganymede’s Water-Product Exospheres. (Poster) European Planetary Science Congress 2017, held 17-22 September, 2017 in Riga Latvia, id. EPSC2017-626
  33. Oza, A.V. et al. 2017. Rotation-Driven Icy Galilean Satellite Exospheres. (Talk) Ices in the Solar System. ESA-AC. Madrid, Spain.
  34. Oza, A.V et al. 2016. Directly Detecting Molecular Oxygen Exospheres at Europa and Ganymede. (Poster). Canary Islands Winter School of Astrophysics
  35. Oza, A.V et al. 2016. Origin and Evolution of Europa’s Oxygen Exosphere. (Talk). AAS/Division for Planetary Sciences Meeting Abstracts, Vol. 48, 517.05.
  36. Oza, A.V et al. 2016. On the Direct Detection of Water Exospheres at Europa and Ganymede. (Poster). CNES Toulouse, France. 2016
  37. Leblanc, F., Oza, A.V et al. 2016. 3D Multispecies Collisional Model of Ganymede’s Atmosphere. (Poster). AAS/Division for Planetary Sciences Meeting Abstracts, Vol. 48, 429.09.
  38. Oza, A.V. et al. 2016 ”Development of a Carbon Nanotube Ionizer for Exosphere Exploration.” (Poster). Programme Nationale Soleil-Terre. Hendaye, France.
  39. Oza, A.V. et al. 2016 Capturing Atmospheres via Nanotechnology and 3D Exosphere Simulations. (Talk). ESEP: Space Instrumentation for planetary exploration. Observatoire de Paris, Meudon, France.
  40. Oza, A.V. et al. 2015 Towards a Carbon Nanotube Ionization Source for Planetary Atmosphere Exploration. (Poster). AGU Fall Meeting. San Francisco, California
  41. Oza, A.V. et al. 2015 ”Carbon Nanotube Ionization Source for Planetary Atmosphere Exploration.” (Talk). Institut d’Astrophysique de Paris. Paris, France.
  42. Schmidt, C. et al. 2015 including Oza, A.V. Plasma Parameters in Io’s Torus II: Measurements from Apache Point Observatory. European Planetary Science Congress 2015. Nantes, France.
  43. Troup, N. et al. 2015 including Oza, A.V. A Study of Statistical Binaries with SDSS/APOGEE. American Astronomical Society, AAS Meeting 225, id.340.06.
  44. Oza, A.V. et al. 2014, ”Exploration of Planetary Atmospheres : Simulation and Detection.” (Talk). Institut d’Astrophysique de Paris. Paris, France.
  45. Johnson, R.E.,Oza, A.V et al. 2014, Volatile Loss and Classification of Kuiper Belt Objects. American Astronomical Society, DPS meeting 46, id.510.01.
  46. Skemer, A. et al. 2014 incl. A.V.Oza High contrast imaging at the LBT: the LEECH exoplanet imaging survey. Proceedings of the SPIE, Volume 9148, id. 91480L 12 pp. (2014). (SPIE Homepage)
  47. Turner, J. et al. 2014 incl. A.V.Oza Plasma Parameters in Io’s Torus I: Measurements from Apache Point Observatory. American Geophysical Union, Fall Meeting 2014, abstract P13E-07.
  48. Skemer,A. et al. incl. Oza, A.V. LEECH: A 100 Night Exoplanet Imaging Survey at the LBT ” Exploring the Formation and Evolution of Planetary Systems, ” Proceedings of the International Astronomical Union, IAU Symposium, Volume 299, pp. 70-71, January 2014.
  49. Oza, A.V., Reichart, D., Trotter, A. Probing the Circumburst Environment & Jet of GRB 091018A : Modeling the Synchrotron Peak - Cooling Break Cross Over. American Astronomical Society meeting. Austin, TX, January 8-12, 2012.
  50. Oza, A.V. & Reichart, D. Afterglow Photometry and Modeling GRB 091018. American Physical Society, 78th Annual Meeting of the Southeastern Section of the APS; October 19-22, 2011; Roanoke, VA. MAY 25, 2021 APURVA V. OZA · RÉSUMÉ 7
  51. Oza, A.V. et al. First Detection of Polarization in the North Polar Spur with the NRAO 40 ft. telescope. Educational Research in Radio Astronomy, July 2010, Green Bank, WV.
  52. Oza, A. Exploring the Relationships of Optical Blazar and Quasar Variability Through a Range of Redshifts. Annual Meeting of the Southeastern Section of the APS, December 2007.

Projects

Juno