Research Interests
Signal and image processing in Astrophysics:
- Astrophysics: Weak Lensing Mass Maps, Clusters of galaxies
- Data analysis: multiscale methods, sparse representation, statistical methods.
I'm involved in the following projects:
CV
- 1995: Science high school degree, Noyon (France)
- 1999: Bachelor's degree in Physics, Université d'Amiens (France)
- 2001: Master's degree in Signal Processing, ENSPM (Ecole Nationale Supérieure de Physique de Marseille, France)
- 2002: DRT degree in Image Processing (Diplome de Recherche Technologique), INPG (Institut National de Physique de Grenoble, France)
- since 2003: Ingineer-researcher, CEA Saclay
- 2006-2008 : PhD in Astrophysics
Software
- Software MRLens: New filtering method for weak lensing reconstruction.
- Software FASTLens Inpainting method dedicated to weak lensing.
- Software K-Inpainting: Inpainting for Kepler.
- Software ICON: Inpainting for Microscope
Scientific Publications
- "Microscope Mission: Statistics and impact of glitches on the test of the weak equivalence principle", J. Bergé, Q. Baghi, A. Robert, M. Rodrigues, B. Foulon, E. Hardy, G. Métris, S. Pires, P. Touboul, submitted to CQG, 2021
- "Microscope Mission: Data Analysis Principle", J. Bergé, Q. Baghi, E. Hardy, G. Métris, A. Robert, M. Rodrigues, P. Touboul, R. Chhun, P.-Y. Guidotti, S. Pires, S. Reynaud, L. Serron, J.-M. Travert, submitted to CQG, 2021
- "The Cluster HEritage project with XMM-Newton: Mass Assembly and Thermodynamics at the Endpoint of structure formation I. Programe overview, The CHEX-MATE Collaboration: M. Arnaud, S. Ettori, G.W. Pratt, M. Rossetti, D. Eckert, F. Gastaldello, R. Gavazzi, S.T. Kay, L. Lovisari, B. J. Maughan, E. Pointecouteau, M. Sereno, I. Bartalucci, A. Bonafede, H. Bourdin, R. Cassano, R.T. Duffy, A. Iqbal, S. Maurogordato, E. Rasia, J. Sayers, F. Andrade-Santos, H. Aussel, D.J. Barnes, R. Barrena, S. Borgani, S. Burkutean, N. Clerc, P.-S. Corasaniti, J.-C. Cuillandre, S. De Grandi, M. De Petris, K. Dolag, M. Donahue, A. Ferragamo, M. Gaspari, S. Ghizzardi, M. Gitti, C.P. Haines, M. Jauzac3, M. Johnston-Hollitt, C. Jones, F. Kéruzoré, A.M.C. LeBrun, F. Mayet, P. Mazzotta, J.-B. Melin, S. Molendi, M. Nonino, N. Okabe, S. Paltani, L. Perotto, S. Pires, M. Radovich, J.-A. Rubino-Martin, L. Salvati, A. Saro, B. Sartoris, G. Schellenberger, A. Streblyanska, P. Tarrío, P. Tozzi, K. Umetsu, R.F.J. van der Burg, F. Vazza, T. Venturi, G. Yepes, S. Zarattini, A&A in press, October 2020
- "Euclid: Reconstruction of Weak Lensing mass maps for non-Gaussianity studies", S. Pires, V. Vandenbussche, V. Kansal, R. Bender, L. Blot, D. Bonino, A. Boucaud, J. Brinchmann, V. Capobianco, J. Carretero, M. Castellano, S. Cavuoti, R. Clédassou, G. Congedo, L. Conversi, L. Corcione, F. Dubath, P. Fosalba, M. Frailis, E. Franceschi, M. Fumana, F. Grupp, F. Hormuth, S. Kermiche, M. Knabenhans, R. Kohley, B. Kubik, M. Kunz, S. Ligori, P.B. Lilje, I. Lloro, E. Maiorano, O. Marggraf, R. Massey, G. Meylan, C. Padilla, S. Paltani, F. Pasian, M. Poncet, D. Potter, F. Raison, J. Rhodes, M. Roncarelli, R. Saglia, P. Schneider, A. Secroun, S. Serrano, J. Stadel, P. Tallada Crespí, I. Tereno, R. Toledo-Moreo, Y. Wang, A&A 638, A141, June 2020
- "Space test of the Equivalence Principle: first results of the MICROSCOPE mission", P. Touboul, G. Metris, M. Rodrigues, Y. André, Q. Baghi, J. Bergé, D. Boulanger, S. Bremer, R. Chhun, B. Christophe, V. Cipolla, T. Damour, P. Danto, H. Dittus, P. Fayet, B. Foulon, P.-Y. Guidotti, E. Hardy, P.-A. Huynh, C. Lämmerzahl, V. Lebat, F. Liorzou, M. List, I. Panel, S. Pires, B. Pouilloux, P. Prieur, S. Reynaud, B. Rievers, A. Robert, H. Selig, L. Serron, T. Sumner, P. Viesser, CQG, 36, 225006, November 2019
- "Dealing with missing data in the MICROSCOPE space mission: An adaptation of inpainting to handle colored-noise data", S. Pires, J. Bergé, Q. Baghi, P. Touboul, G. Métris, Physical Review D, 94, 123015, December 2016
- "A new model to predict weak-lensing peak counts III. Filtering technique comparisons", C. Lin, M. Kilbinger, S. Pires, A&A 593, A88, September 2016
- "High Resolution Weak Lensing Mass-Mapping Combining Shear and Flexion", F. Lanusse, J.-L. Starck, A. Leonard, S. Pires, A&A, 591, A2, 12, June 2016
- "Dealing with missing data: An inpainting application to the MICROSCOPE space mission", J. Bergé, S. Pires, Q. Baghi, P. Touboul, G. Metris, Physical Review D, 92, 11, December 2015
- "Sparsely Sampling the Sky: Regular vs Random Sampling", P. Paykari, S. Pires, J.-L. Starck, A.H. Jaffe, A&A, 581, A113, 6, September 2015
- "Gap interpolation by inpainting methods : Application to Ground and Space-based Asteroseismic data", S. Pires, S. Mathur, R.A. Garcia, J. Ballot, D. Stello, K. Sato, A&A, 574, A18, February 2015
- "Impact on asteroseismic analyses from regular gaps in Kepler data", R.A. Garcia, S. Mathur, S. Pires, C. Régulo, B. Bellamy, P.L. Pallé, J. Ballot, S. Barcelo Forteza, P.G. Beck, T.R. Bedding, T. Ceillier, T. Roca Cortés, D. Salabert, and D. Stello, A&A, 568, A10, 8, August 2014
- "A PCA-based automated finder for galaxy-scale strong lenses", R. Joseph, F. Courbin, R.B. Metcalf, C. Giocoli, P. Hartley, N. Jackson, F. Bellagamba, J.-P. Kneib, L. Koopmans, G. Lemson, M. Meneghetti, G. Meylan, M. Petkova, S. Pires, A&A, 566, A63, 10, June 2014
- "Weak lensing Galaxy Cluster Field Reconstruction", E. Jullo, S. Pires, M. Jauzac, J.-P. Kneib, MNRAS, 437, 4, 3969-3979, February 2014
- "Origins of weak lensing systematics, and requirements on future instrumentation (or knowledge of instrumentation)", R. Massey, H. Hoekstra, T. Kitching, J. Rhodes, M. Cropper, J. Amiaux, D. Harvey, Y. Mellier, M. Meneghetti, L. Miller, S. Paulin-Henriksson, S. Pires, R. Scaramella and T. Schrabback, MNRAS, 429, 1, 661-678, 2013.
- "Defining a Weak Lensing Experiment in Space", M. Cropper, H. Hoekstra, T. Kitching, J. Amiaux, R. Massey, L. Miller, Y. Mellier, J. Rhodes, B. Rowe, S. Pires, C. Saxton and R. Scaramella, MNRAS, 431, 4, 3103-3126, 2013.
- "Fast Calculation of the Weak Lensing Aperture Mass Statistic", A. Leonard, S. Pires, J.-L. Starck, MNRAS, 423, 4, 3405-3412, 2012.
- "Cosmological constraints from the capture of non-Gaussianity in Weak Lensing data", S. Pires, A. Leonard, J.-L. Starck, MNRAS, 423, 1, 983-992, 2012.
- "Wavelet Helmholtz decomposition for weak lensing mass map reconstruction", E. Deriaz, S. Pires, J.-L. Starck, A&A, 540, A34, 2012
- "Towards a fast, model-independent Cosmic Microwave Background bispectrum estimator", S. Pires, S. Plaszczynski and A. Lavabre, Statistical Methodology, 9, 71-84, 2012
- "Spectral evolution and polarization of variable structures in the pulsar wind nebula of PSR B0540-69.3", N. Lundqvist, P. Lundqvist, C.-I. Björnsson, G. Olofsson, S. Pires, Yu. A. Shibanov and D.A. Zyuzin, MNRAS, 413, 1, 611-627, 2011
- "Weak Lensning Mass Reconstruction: Flexion vs Shear", S. Pires and A. Amara, ApJ, 723, 2, 1507-1511, 2010
- "Light on Dark Matter with Weak Gravitational Lensing", S. Pires, J.-L. Starck and A. Réfrégier, IEEE Signal Processing Magazine, 27, 1, 76-85, 2010.
- " ", S. Pires, J.-L. Starck, A. Amara, A. Réfrégier and R. Teyssier, A&A, 505, 3, 969-979, 2009.
- "On the contribution of large scale structure to strong gravitational lensing", C. Faure, J.-P. Kneib, S. Hilbert, R. Massey, G. Covone, A. Finoguenov, A. Leauthaud, J.E. Taylor, S. Pires, N. Scoville, Anton M. Koekemoe, ApJ, 695, 2, 1233-1243, 2009.
- "Handbook for the GREAT08 Challenge: An image analysis competition for cosmological lensing", S. Bridle, J. Shawe-Taylor, A. Amara, D. Applegate, S.-T. Balan, G. Bernstein, J. Berge, H. Dahle, T. Erben, M. Gill, A. Heavens, C. Heymans, W. High, H. Hoekstra, M. Jarvis, T. Kitching, J.-P. Kneib, K. Kuijken, D. Lagattuta, R. Mandelbaum, R. Massey, Y. Mellier, B. Moghaddam, Y. Moudden, R. Nakajima, S. Paulin-Henriksson, S. Pires, A. Rassat, A. Refregier, J. Rhodes, T. Schrabback, E. Semboloni, M. Shmakova, L. van Waerbeke, L. Voigt, D. Wittman, Annals of Applied Statistics, 3, 6-37, 2009.
- "FASTLENS (FAst STatistics for weak Lensing): Fast method for Weak Lensing Statistics and map making", S. Pires, J.-L. Starck, A. Amara, R. Teyssier, A. Réfrégier and J. Fadili, MNRAS, 395, 3, 1265-1279, 2009.
- "Full-sky Weak Lensing Simulation with 70 Billions Particles", R. Teyssier, S. Pires, D. Aubert, C. Pichon, S. Prunet, A. Amara, K. Benabed, S. Colombi, A. Réfrégier and J.-L.Starck, A&A, 497, 2, 335-341, 2009.
- "Dark matter maps reveal cosmic scaffolding", R. Massey, J. Rhodes, R. Ellis, N. Scoville, A. Leathaud, A. Finoguenov, P. Capak, D. Bacon, H. Aussel, J.-P. Kneib, A. Koekemoer, H. McCracken, B. Mobasher, S. Pires, A. Réfrégier, S. Sasaki, ,J.-L. Starck, Y. Taniguchi and J. Taylor, Nature, 445, 7125, 286-290, 2007
- "Curvelet applications to asteroseismic data", P. Lambert, S. Pires, J. Ballot, R.A. García and J.L. Starck, A&A, 454, 3, 1021-1027, 2006
- "Sunyaev-Zel'dovich clusters reconstruction in multiband bolometer camera survey", S. Pires, J.B. Juin, D. Yvon, Y. Moudden, S. Anthoine, and E. Pierpaoli, A&A, 455, 2, 741-755, 2006
- "Weak Lensing Mass Reconstruction using Wavelets", J.-L. Starck, S. Pires, and A. Refregier, A&A, 451, 3, 1139-1150, 2006
Others
- Scientific communication CEA/DRF, "En chute libre dans le vide", December, 2019
- Chapter in book: "Weak Gravitational Lensing", S. Pires, J.-L. Starck, A. Leonard, and A. Refregier, in Advances in Machine Learning and Data Mining for Astronomy, Chapman and Hall, Edtitors M. Way, J. Scargle, K. Ali, A. Srivastava, March 2012
- Euclid definition study Report (Red Book), Mapping the geometry of the dark Universe", Laureijs, R.; Amiaux, J.; Arduini, S.; Auguères, J. -L.; Brinchmann, J.; Cole, R.; Cropper, M.; Dabin, C.; Duvet, L.; Ealet, A.; Garilli, B.; Gondoin, P.; Guzzo, L.; Hoar, J.; Hoekstra, H.; Holmes, R.; Kitching, T.; Maciaszek, T.; Mellier, Y.; Pasian, F.; Percival, W.; Rhodes, J.; Saavedra Criado, G.; Sauvage, M.; Scaramella, R.; Valenziano, L.; Warren, (Report, Euclid Red Book Editorial Team) S.; Bender, R.; Castander, F.; Cimatti, A.; Le Fèvre, O.; Kurki-Suonio, H.; Levi, M.; Lilje, P.; Meylan, G.; Nichol, R.; Pedersen, K.; Popa, V.; Rebolo Lopez, R.; Rix, H. -W.; Rottgering, H.; Zeilinger (Euclid Consortium Board), W.; Grupp, F.; Hudelot, P.; Massey, R.; Meneghetti, M.; Miller, L.; Paltani, S.; Paulin-Henriksson, S.; Pires, S.; Saxton, C.; Schrabback, T.; Seidel, G.; Walsh (Other Euclid Tiger Team members), et al (165 additional authors), September, 2011
- PhD manuscript: "Application des méthodes multi-échelles aux effets de lentille gravitationnelle faibles: reconstruction et analyse des cartes de matière noire", S. Pires, Sedi-Sap/CEA Saclay, defended in December 15, 2008.
Conference Organization
Invited talks
- « Euclid: Weak Lensing Mass Maps», Laboratoire Astoparticules et Cosmologie, Paris (France), April 12, 2021
- « The Microscope mission: dealing with missing data », CEA/IRFU, Saclay (France) November 17, 2020
- « Euclid: Weak Lensing Mass Maps», NASA/Goddard Space Flight Center, Greenbelt (USA), July 1-5, 2019
- Journée GdR ISIS « Estimation de données manquantes», Marseille (France), "Les données manquantes en Astrophysique", October 8, 2015
- Conference MissData, Rennes (France), "Missing Data in Astrophysics", June 18-19, 2015
- Mini-workshop on Kepler mission « Signal Processing with Sparse Representations », School of Physics, University of Sydney, Australia, Nov 19-23, 2012
- Conference NDIP (New Developments In Photodetection), Lyon (France), «Image Processing in Astrophysics», July 4-8, 2011
- Workshop PPF-PSI on missing data, « Missing Data Interpolation in Weak Lensing », Toulouse (France), Avril 28, 2009
- « Application of multiscale methods to Weak Lensing: Reconstruction and analysis of Dark Matter mass maps », JPL/Caltech, Pasadena (USA), Feb 25-March 16, 2009
- « FASTLens Fast method for Weak Lensing Statistics and map making », Institut Astrophysique de Paris, Paris (France), July 9, 2008
- « Dark Matter mass map Reconstruction and Analysis using sparsity», University Observatory, Munich (Germany), June 17-19, 2008
Contributions
- Workshop Cosmology with Maps, « Weak Lensing Mass Maps in Euclid», London (UK), February 12, 2016
- Journée GdR ISIS « Estimation de données manquantes», Marseille (France), "Les données manquantes en Atsrophysique", October 8, 2015
- Conference MissData, Rennes (France), "Missing Data in asttrophysics", June 18-19, 2015
- Workshop « Missing Data in Physics »,, Nice (France), "Missing Data in asteroseismology", May 11-12, 2015
- Workshop « Weak Lensing beyond the ordinary», Nice (France), "Optimizing non-Gaussian statistics ", June 3-5, 2013
- Conference, ADA VII (Astronomical Data Analysis), Cargese (France), «Improving Cosmological constraints from non-Gaussianity in Weak Lensing » May 14-18, 2012
- Conference NDIP (New Developments In Photodetection), Lyon (France), « Image processing in Astrophysics », July 4-8, 2011
- Conference, ADA VI (Astronomical Data Analysis), Monastir (Tunisia), «Cosmological model discrimination from Weak Lensing » , May 3-6 , 2010
- Workshop DEUS (DARK ENERGY UNIVERSE SIMULATIONS), «Cosmological model discrimination with Weak Lensing », December, 4, 2009, IAP, Paris (France)
- Conference Invisible Univers, «Cosmological model discrimination with Weak Lensing » , Paris (France), June 29 - July 3, 2009
- Workshop PPF-PSI on missing data, « Missing data interpolation in Weak Lensing », Toulouse (France), Avril 28, 2009
- Conference, ADA V (Astronomical Data Analysis), Heraklion (Crete), May 7-9 , 2008
- Colloquium Stellar physics and cosmology, « Dark matter maps reconstruction from weak lensing data - Application to COSMOS data- », Paris (France), May, 24-25, 2007
- Conference, ADA IV (Astronomical Data Analysis), Marseille (France), September 18-20 , 2006
- Workshop on Nongaussianity in Cosmology, Miramare-Trieste (Italy), July 24-28, 2006
- Conference, Les rencontres de Moriond : "Contents and structures of the Universe", La Thuile (Italie), March 18-25, 2006
- Advanced Lectures, "a Pan-Chromatic View of Clusters of Galaxies and the Large-Scale Structure", Instituto Nacional de Astrofísica, Óptica y Electrónica of Puebla (Mexico), June 27- July 8, 2005
- Summer School in Statistics for Astronomers & Physicists, Penn State's University (USA), June 5-17, 2005
- Workshop "Contenu informatif des images numeriques", ENS Cachan (France), November 25-26, 2004
- Summer School, "Wavelet And Multifractal Analysis", Institut d'Etude Scientifique de Cargese, Corsica, June 19-31, 2004
Teaching and outreach
- MOOC (since 2016) for the doctoral school PHENIICS of Paris-Saclay
- Course on statistical methods, University of Sydney, Australia, November 22, 2012
- ADA7 summer school: Practical works in Signal and Image Processing in Astrophysics (Cargèse, May 7-11, 2012)
- Tutorial « Image processing in Astrophysics », Conference NDIP (New Developments In Photodetection), Lyon (France), July 4-8, 2011
- Participation to CEA « journées portes ouvertes » open to the general public, in November 21-22, 2009
- Participation to the « salon de la culture et des jeux mathématiques » open to the general public, in May 28, 2009
- Signal and image processing practical work at Paris XI post MASTER (2005-2012)
- Summer School in Statistics for Astronomers and Physicists in Penn State's University, USA, June 5-17, 2005: Practical works in Spatial Processes and Image Analysis
Scientific and administrative responsabilities
- Member of the AIM laboratory Council (since 2011)
- Responsible of the (bi-weekly) Postdoc Seminars of the Department of Astrophysics (2012-2020)
- Euclid SDC-DEV FR OULE3: national coordinator for the development of the LEVEL 3 Euclid products (since 2011)
- Euclid WL-SWG Mass Mapping WP lead : coordinates the scientific exploitation of the weak lensing mass maps (since 2012)
- Euclid 2D-MASS-WL PF lead: in charge of the integration of the codes to produce the weak lensing mass maps (since 2014)
- Euclid PF lead of the 3D-MASS-WL PF: in charge of the integration of the codes to produce the catalogue of galaxy clusters detected with weak lensing (since 2014)
- Euclid CL-SWG Weak Lensing Selected Clusters WP lead : coordinates the scientific exploitation of the catalogue of galaxy clusters detected with weak lensing (since 2016)
- Member of the maturity assessment team in Euclid in charge to follow-up the development of the Euclid processing pipeline (since 2020)