Patrick Gaulme Email and Phone Number

Research in the field of stellar (asteroseismology, binary stars) and planetary science (atmospheric dynamics, giant-planet seismology). Observations: spectroscopy and photometry in the visible domain.

I was a software development manager at the data center of the ESA PLATO mission, scheduled to be launched in 2026 to discover and characterize thousands of exoplanetary systems. I'm in charge of developing data analysis support tools for the scientists of the consortium. The remaining 10% of my time I do research on the interior of stars and planets.I do research in the field of stellar physics (evolution of binary systems, seismology of stars) and planetary physics (atmospheric dynamics and seismology).

I was an astronomer for the Sloan Digital Sky Survey (SDSS) at the Apache Point Observatory, which is part of New Mexico State University (NMSU). My job wass divided into the three following duties:1) Observation service: in charge of night-time observations 80 nights a year, which includes telescope operations, data acquisition, and data quality control.2) Research: Science PI of two NASA granted projects that have both started during Fall 2014. The first aims at calibrating asteroseismic measurement thanks to red giant stars that belong to eclipsing binary systems, which I detected in data provided by the Kepler space telescope. The second is an instrument project - JOVIAL/JIVE - whose purpose is to detect the oscillations of Jupiter and Saturn in order to understand their interior structures. 3) Education: Graduate Faculty at the NMSU to advise graduate and PhD students. Co-advised three PhD students.

Stellar and exoplanetary science in the Astronomy department of NMSU

1. INSTRUMENT SCIENTIST of the Doppler spectro-imager DSI-ECHOES for the ESA-NASA space mission project EJSM (L-Class mission, Cosmic Vision)• In charge dimensioning and tolerancing of the instrument (Mach-Zehnder design) - Scientific specifications - Technical specification with mathematical modeling of the real instrument, which includes the main sources of spurious signal: optical distortions, thermal stability, photo response non uniformity (PRNU), pointing accuracy• Development of the instrument simulator - Estimate the instrument’s performance as function of the mission scenario proposed by the space agency - Estimate the influence of the image compression algorithm on the instrumental performance2. SCIENTIFIC EXPLOITATION of photometric data from the satellites CoRoT (CNES) and Kepler (NASA) in the fields of stellar seismology and exoplanets• Stellar seismology: modeling of the stellar oscillation spectrum- Fourier analysis (power spectrum, base-band autocorrelation)- Development of statistical analysis tools: hypothesis testing (H0, H1), Bayesian modeling (maximum a posteriori)• Exoplanets: modeling of transit light curves and radial velocity measurements to determine the planets’ radius, mass, albedo and orbital parameters- Development of an algorithm that performs Bayesian modeling (Markov-chain Monte-Carlo with parallel tempering).- Bayesian model comparison

1. RESEARCH ACTIVITY: study of Venus’ atmospheric dynamics in the context of ground-based observations to support ESA mission Venus Express. • In charge of observation campaigns at THEMIS Observatory (Tenerife). Doppler spectro-imaging of Venus’ atmosphere with the multi-wavelength (visible and near IR) slit spectrometer used in scanning mode. - Definition of the detailed test procedures from specifications - Instrument calibration and instrumental performance determination- Definition of observing sequences- Reduction and processing of scientific data: reconstruction of hyper-spectral maps from spectral images.- Publication of scientific results in peer review.• Work placement supervisor on Venus atmospheric study (3 months)2. TEACHING ACTIVITY at Observatoire de Paris and Université Pierre et Marie Curie• In charge of tutorials for the “Diplôme d’Université” in Astrophysics of the Observatoire de Paris- Image processing, scientific project managing• In charge of tutorials and lab demonstrations at Université Pierre et Marie Curie- Electromagnetism, non-linear optics, Fourier optics.• In charge of animation for public events (Fête de la Science) and conferences in high schools

CO-LEADER OF THE INSTRUMENTAL PROJECT SYMPA: a ground-based Doppler spectro-imager dedicated to seismic studies of Jupiter.• In charge of an observation campaign at San Pedro Martir Observatory (Mexico)- Setting up of the instrument at telescope focus and optical alignment- Informatics: data acquisition, time calibration, thermal control- Photometric and spectrometric calibration: definition of test procedures- Definition of observing sequences, then observation runs• Development of the data processing chain- Data pre-processing: correction of PRNU, CCD thermal drift, optical distortions - Data processing: disentangling of photometric/spectrometric informations by applying Wiener filtering in the 2D Fourier transform of interferograms- Deconvolution algorithm to cancel out spurious signals from the time series• In charge of scientific exploitation- Evaluation of the instrument concept and design with respect to technical specifications- Major scientific result: first discovery of Jupiter seismic waves

FEASIBILITY STUDY of the spatial photometer JOVIS: a CoRoT-like project for Jupiter seismic study (CNES micro-satellite program)• Modeling of the coupling of Jupiter’s clouds with seismic waves- Thermodynamic model of Jupiter’s troposphere and stratosphere- Cloud microphysics model- Atmospheric acoustic wave propagation model• Development of a mathematical method to identify Jupiter’s global seismic modes - Description of seismic patterns in the spherical harmonics base - Application of Graham-Schmidt algorithm to create an orthonormal base• Estimate of the expected performance of JOVIS - Comparative study of scientific specifications with technical capability