Contact: simon.coude (at) nao.ac.edu
LinkedIn: https://www.linkedin.com/in/simoncoude/
GitHub: https://github.com/coude/
My name is Simon Coudé, and I am currently a Project Assistant Professor for the East Asian ALMA Regional Center at the National Astronomical Observatory of Japan near Tokyo (東京).
My research interests focus on the study of the cold interstellar medium, and the role it plays in the formation of stellar systems in our galaxy. Specifically, I work to bring an observational perspective to better understand how interstellar turbulence and magnetic fields influence the fragmentation of dense filaments.
I completed my Ph.D. in Astrophysics in 2018 under the supervision of Pierre Bastien at the Université de Montréal in Québec, Canada. While in graduate school, I was a student member of the Institute for Research on Exoplanets (iREx) and the Center for Research in Astrophysics of Québec (CRAQ).
The Atacama Large Millimeter/submillimeter Array (ALMA) is one of the most powerful facilities we have available today to study the Universe, from early galaxies to to the formation of planets around young stars.
With its unparalleled resolution and sensitivity, combined with its polarization capabilities, ALMA is uniquely suited for the study of how magnetic fields evolve from scale of giant molecular clouds to that of proto-stellar cores.
As one of the staff scientists for the East Asian ALMA Regional Center (EA-ARC) at the National Astronomical Observatory of Japan (NAOJ), I contribute to the operations of ALMA and support the scientific community in its use.
Panoramic image of the ALMA antenna array with the Milky Way in the background.
SOFIA landing at the Köln airport in Germany.
I was previously Instrument Scientist for the Stratospheric Observatory for Infrared Astronomy (SOFIA). I was affiliated with Universities Space Research Association (USRA) and based at the NASA Ames Research Center.
As instrument scientist, my main responsibility was to provide technical and scientific support for the High-resolution Airborne Wideband Camera Plus (HAWC+) polarimetric camera. I also had significant experience supporting the German REceiver for Astronomy at Terahertz Frequencies (GREAT), an heterodyne array designed for spectroscopy in the far-infrared.
As a Postdoctoral Researcher at Worcester State University and at the Center for Astrophysics | Harvard & Smithsonian, I was the co-lead for the Filaments Extremely Long and Dark: a Magnetic Polarization Survey (FIELDMAPS) of infrared dark filaments with the HAWC+ instrument on SOFIA.
My primary goal with the FIELDMAPS survey was to systematically produce the largest polarization data set of infrared dark filaments using the best practices for HAWC+ data reduction. These data are publicly available on the FIELDMAPS Dataverse for anyone to use.
The FIELDMAPS survey showed that magnetic fields in these star-forming dark clouds were dynamically important in resisting gravity along the length of the filaments, except in regions of massive enough to actively undergo star formation.
Magnetic field structure in the dense filament G21.3-0.15, one of many "bones" of our Milky Way Galaxy.
The summit of Maunakea as viewed from the JCMT.
During my doctoral studies, I had the opportunity to work with SCUBA-2 continuum, HARP spectroscopic, and POL-2 polarimetric observations taken at the James Clerk Maxwell Telescope (JCMT). I was also directly involved in the commissioning process for the SCUBA-2 polarimeter, POL-2.
As a professional astronomer, I have experience observing at optical, infrared, far-infrared, submillimeter, and radio wavelengths using both ground-based and airborne observatories. These include the Observatoire du Mont-Mégantic (OMM) in Québec, the James Clerk Maxwell Telescope (JCMT) in Hawaii, the Stratospheric Observatory for Infrared Astronomy (SOFIA) in California, and the Greenbank Telescope (GBT) in West Virginia.
The full list of my publications can be found on this public library hosted by NASA's Astrophysical Data System.
Highlights
Coudé et al. "FIELDMAPS Data Release: Far-Infrared Polarization in the "Bones" of the Milky Way." 2025, accepted in ApJS, arXiv:2509.25832
Stephens et al. "Magnetic Fields in the Bones of the Milky Way." 2025, accepted in ApJ, arXiv:2510.05933
Myers, Stephens & Coudé. "Most-likely DCF Estimates of Magnetic Field Strength." 2024, ApJ, 962, 64
Bešlić et al. "The magnetic field in the Flame nebula." 2024, A&A, 684, A212
Coudé et al. "The JCMT BISTRO Survey: The Magnetic Field of the Barnard 1 Star-forming Region." 2019, ApJ, 877, 88
The magnetic field in Barnard 1 from Coudé et al. (2019).