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Reinier Janssen

Photo of Reinier Janssen


4800 Oak Grove Drive

Pasadena, CA 91109

Curriculum Vitae:

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Member of:

Interstellar and Heliospheric Physics


Reinier Janssen is a NASA Postdoctoral Fellow at JPL working on the development of astronomical instrumentation based on novel superconducting detectors. In particular, he is leading the detector design for the Terahertz Intensity Mapper balloon mission. Reinier obtained his PhD at Delft, University of Technology, where he developed Kinetic Inductance Detectors made from NbTiN and Al and was the first to show photon noise limited performance at astronomically relevant loading. After his PhD, Reinier did a 2-year post-doc at the Institut d’Astrophysique Spatiale in Paris developing a system to test the effect of high-energy particles on new cryogenic detector technologies. Throughout his career Reinier has also performed research on the properties of radio-loud active galactic nuclei, their interactions with their host galaxy and their influence on galaxy evolution.


  • BSc Applied Physics (Delft, University of Technology, 2007)
  • MSc Applied Physics (Delft, University of Technology, 2011)
  • MSc Astronomy (Leiden University, 2011)
  • PhD Applied Physics (Delft, University of Technology, 2017)

Professional Experience

Feb 2017 - Dec 2018: Postdoctoral researcher (Institut d'Astrophysique Spatiale, Université Paris-Sud XI)

Research Interests

Superconducting detectors for astronomy, active galactic nuclei, galaxy evolution

Selected Awards

NASA Postdoctoral Program Fellowship (2018)

Selected Publications

  1. JJA Baselmans, et al., A kilo-pixel imaging system for future space based far-infrared observatories, Astronomy & Astrophysics 601, A89 (2017)
  2. RMJ Janssen, et al., Equivalence of Optical and Electrical Noise Equivalent Power of Hybrid NbTiN-Al Microwave Kinetic Inductance Detectors, Applied Physics Letters 105, 193504 (2014)
  3. RMJ Janssen, et al., High optical efficiency and photon noise limited sensitivity of microwave kinetic inductance detectors using phase readout, Applied Physics Letters 103, 203503 (2013)
  4. RMJ Janssen, et al., The triggering probability of radio-loud AGN: A comparison of high and low excitation radio galaxies in hosts of different colors, Astronomy & Astrophysics 541, A62 (2012)