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Sergi  Hildebrandt Rafels's Picture
Jet Propulsion Laboratory
M/S 169-320
4800 Oak Grove Drive
Pasadena, CA 91109
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Sergi Hildebrandt Rafels

  • PhD in Theoretical Physics - University of Barcelona

Research Interests
  • CMB data analysis and cosmology. Polarization and Inflation.
  • Direct imaging and characterization of exoplanets from space
  • Visible Adaptive Optics (Palomar)
  • Gravitational physics: Intermediate mass black holes, regularized black holes


Starshade Icon Starshade
Starshade is a giant shade which could help in the search for life on planets outside our Solar System.

Wide Field Infrared Survey Telescope (WFIRST) Icon Wide Field Infrared Survey Telescope (WFIRST)
The Wide-Field Infrared Survey Telescope (WFIRST) is a NASA observatory designed to perform wide-field imaging and surveys of the near infrared (NIR) sky.

BICEP3 will provide the most sensitive map of the CMB & polarized foregrounds at 95 GHz at the spatial scales where the imprint of primordial Inflation may be found. It is supported by The Office of the Chief Scientist & Chief Technologist.

BICEP2 / Keck Array Icon BICEP2 / Keck Array
BICEP2 and Keck Array follow BICEP and probe more deeply in the polarization of the CMB.

Ten MilliArcsec is a simple visible-light imager system to enable high-angular-resolution science with PALM-3000.

Planck Icon Planck
Planck is the first European mission to study the birth of the Universe. Planck was launched on May 14, 2009.

Professional Experience
  • Jet Propulsion Laboratory, Pasadena, Calif., Research Scientist, Astrophysics Element (2013-Present)
  • California Institute of Technology, Pasadena, Calif. (2011-Present)
    • Visiting Faculty Associate (2014-Present). Lecturer in Physics (2014-Present)
    • Member of the BICEP ARRAY bolometer telescope collaboration, California Institute of Technology (2016-Present)
    • Member of the Bicep2 bolometer telescope collaboration, California Institute of Technology (2011-Present)
    • Member of the Keck array collaboration, California Institute of Technology (2011-Present)
    • Principal Investigator of The Ten MilliArcSecond (TMAS) camera, The Hale Telescope, at Palomar Observatory, California Institute of Technology (2012-Present)
    • Visitor (2013-2014)
    • Senior Research fellow (2011-2012)
  • Senior Research Fellow. Laboratoire Astrophysique et Cosmologie. (2010)
  • Core Team member of the HFI instrument in Planck (2010-2015)
  • Core Team member of the LFI Instrument in Planck (2007-2015)
    • Planck Scientist (2007-2017)
  • Project Scientist of FastCam, European Nothern Observatory (2006-2010)
  • Project Scientist of COSMOSOMAS, 11-19 GHz multiple radiometer. Instituto de Astrofisicade de Canarias (2003-2008)

Selected Awards
  • NASA Group Achievement Award (2019) "for the substantial and effective scientific, technical, and management work in developing the Large Mission Concept Studies for the 2020 Astrophysics Decadal Survey
  • Voyager Award (2018, individual): For the creation of the first Starshade imaging simulation tool
  • Gruber Cosmology Prize to the Planck Team (2018)
  • Royal Academy Group Achievement Award for the Planck Satellite Team (2018)
  • Group Achievement Award to BICEP2 and Planck Mission Joint Data Analysis Team (2015)
  • Group Achievement Award to U.S. Planck Data Analysis Team (2014)
  • Group Achievement Award to BICEP2 Data Analysis Team (2014)

Selected Publications
  1. BK-V: Measurements of B-mode Polarization at Degree Angular Scales and 150 GHz by Keck Array The BICEP2 and Keck Array Collaborations, ApJ 811, 126, 2015.
  2. A Joint Analysis of BICEP2/Keck Array and Planck Data The BICEP2/Keck and Planck Collaborations, Phys. Rev. Lett. 114, 101301, 2015.
  3. BK-IV: Optical Characterization and Performance of the BICEP2 and Keck Array Experiments The BICEP2 and Keck Array Collaborations, ApJ 806, 206, 2015.
  4. Antenna-coupled TES Bolometers used in BICEP2, Keck Array, and SPIDER The BICEP2, Keck Array, and SPIDER Collaborations, 2015.
  5. BICEP2 Collaboration: BICEP2 II: Experiment and Three-Year Data Set. URL BICEP2 Collaboration: BICEP2 I: Detection Of B-mode Polarization at Degree Angular Scale (2014) URL0
  6. Planck Collaboration Papers (over 100 papers with some most cited papers in astrophysics).
  7. Planck 2013 results. XVI. Cosmological parameters. Planck Collaboration (>3,500 cites).
  8. Palm-3000: Exoplanet Adaptive Optics for the 5 m Hale Telescope", Richard Dekany, et al., The Astrophysical Journal, Volume 776, Number 2 (2013).
  9. "Detection of Anomalous Microwave Emission in the Pleiades Reflection Nebula with Wilkinson Microwave Anisotropy Probe and the COSMOSOMAS Experiment." G'enova-Santos, R.; Rebolo, R.; Rubiño-Mart'in, J. A.; L'opez-Caraballo, C. H.; Hildebrandt, S. R. (2011), ApJ 743 67G.
  10. "COSMOSOMAS observations of the cosmic microwave background and Galactic foregrounds at 11 GHz: evidence for anomalous microwave emission at high Galactic latitude" Hildebrandt, S. R.; Rebolo, R.; Rubiño-Martín, J. A.; Watson, R. A.; Gutiérrez, C. M.; Hoyland, R. J.; Battistelli, E. S., (2007), MNRAS 382 594H.
  11. "New type of regular black holes and particlelike solutions from nonlinear electrodynamics", Burinskii, A., Hildebrandt, S.R., Phys. Rev. D 65, 104017 (2002)
  12. "Kerr-Schild and generalized metric motions" Hildebrandt, S. R., Gen. Rel. Grav., vol. 34 (2002) 65118.

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