The team

INRIA Paris:

Laura Grigori
Laura is an applied mathematician and high performance scientific computing expert. She is interested in novel iterative solvers for very large systems of equations and communication-avoiding and every-aware numerical algorithms. She is a leader of the INRIA-Paris partner of the B3DCMB project.

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Jan Papež
Jan is an applied mathematician working on iterative solvers for very large systems of equations. He is supported by the European project NLAFET and collaborates with the B3DCMB team. 

Since the fall of 2019 Jan is back in Czech Republic at the Institute of Mathematics of Czech Academy of Sciences. 
  
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Thibault Cimic
Thibault Cimic started as a Master 2 student who performed his Master thesis work within the B3DCMB project. Now, since October 1 he is a graduate student who continues working with us. His focus is on iterative solvers for large systems of linear equations. Thibault quit the project in the fall of 2021.

Niels Guilbert
Niels Guilbert is as a research engineer at INRIA-Paris (Alpines) and started in January 2022. The focus of his work is on iterative solvers and preconditioners for large systems of linear equations.

CREST/ENSAE:

Nicolas Chopin
Nicolas is a statistician working at École Nationale de la Statistique et de l’Administration Économique and a member of the Center for Research in Economics and Statistics. His research interest include Monte Carlo methods in statistics, Bayesian statistical methods. He is a leader of the CREST partner of the project.
     
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Gabriel Ducrocq
Gabriel wass a doctoral student in statistics working with Nicolas and developing novel statistical tools for analysis of very large data sets as, for instance, those expected from the next generation of the CMB experiments. Gabriel received his PhD title in May 2022 and will soon join Linköping University in Sweden as a postdoc.

APC:

Dominic Beck
Dominic is a cosmologist and a data analyst interested in modelling and scientific exploitation of the gravitational lensing effect on CMB photons with help of advanced data analysis techniques. He also works hands-on on analysis of the current CMB data sets. He is a member of POLARBEAR/Simons Array and Simons Observatory experiments. 

Since fall of 2019 Dominic is a postdoctoral researcher at Stanford University, where he continues working on analysis of CMB data sets.

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Clara Vergès
Clara is a cosmologist and an aspiring data analyst with interests in modeling instrumental effects typical of modern CMB experiments and developing novel data analysis techniques for their removal. She is involved in POLARBEAR/Simons Array and Simons Observatory experiments.

Since November 2020 Clara is a postdoctoral researcher at Harvard University, working on analysis of CMB data sets as collected by the BICEP observatory.

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Hamza El Bouhargani
Hamza started as a Master 2 student doing his Master thesis work as part of the B3DCMB project. On finishing his Master courses in September 2018 he become a PhD student and continues working with us. His area of interest are methods suitable for on the map-making problem. He is also a member of the Simons Array and Simons Observatory experiments.

Since November 2021 Hamza is a postdoctoral researcher at Lawrence Berkeley National Laboratory, where he will work on the largest of the forthcoming ground-based CMB experiments, CMB-S4, hopefully employing the tools of the B3DCMB project.
Baptiste Jost
Baptiste started as a Master 2 student at the APC Laboratory at the beginning of 2019 and transitioned to a PhD status on Oct 1, 2019. His interests are in novel techniques for the scientific exploitation of the CMB data sets. Baptiste is a member of the Simons Array, Simons Observatory, and CMB-S4 experiments. Baptiste is supported by an international studentship from CNRS and shares his time between Berkeley, working in the group of prof. A. T. Lee, and Paris.
Aygul Jamal
Aygul is a postdoctoral researcher who will join the B3DCMB project staring on November 1, 2018. Aygul received her PhD degree in computer science from the Paris-Sud University. She is an expert in solving, large linear systems of equations and looks forward to applying them to the CMB data analysis problems.

Aygul's post ended in the fall of 2020. Thanks Aygul for all the hard work !
Clément Leloup
Clément Leloup is a postdoctoral researcher who joined our group on Sept 1, 2019. He is a cosmologist with an expertise in scientific exploitation of the CMB data. He is supported by the BxB project but will work closely with the B3Dcmb team. He will focus on component separation techniques and their applications. He is a member of LiteBIRD and CMB-S4 collaborations. 

Josquin Errard
Josquin is a cosmologist and a data analyst with interest in modeling and subtracting  foreground emissions from CMB data and realistic forecasting of performance of future CMB experiments. He works on numerous current and future CMB experiments including POLARBEAR/Simons Array, Simons Observatory, LiteBIRD.

Since December 2021 Josquin has replaced Radek as an overall coordinator of the B3DCMB project.

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Maude Le Jeune
Maude is a software engineer working on novel data analysis techniques and their applications to cosmological and astrophysical data sets. Though mostly working on a gravitational waves experiment, LISA, these days, she still is happy to lend us a helping hand whenever needed.

Radek Stompor
Radek is a cosmologist and a data analyst working on diverse aspects of CMB data analysis and their scientific exploitation. He works on POLARBEAR/ Simons Array, Simons Observatory and LiteBIRD experiments. He has an overall coordinator of the B3DCMB project till his departure to the Centre Pierre Binétruy. He continues collaborating on the project as a scientific advisor. 

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LAL:

Matthieu Tristram
Matt is a cosmologist and a CMB data analyst and specific expertise in the map-making and power spectrum estimation procedures. He works currently on LiteBIRD experiment.

IAS:

Julien Grain
Julien is a cosmologist working on cosmological theory and data analysis, where he developed a particular expertise in power spectrum estimation technique

Center for Computational Astrophysics

Giulio Fabbian
Giulio is a cosmologist and a data analyst working on both CMB data sets and galaxy surveys and their interface. He is a member of POLARBEAR/Simons Array and Simons Observatory as well as future European mission, Euclid. After a stint at Sussex, Giulio is now a Global MSCA Fellow working at New York based Center for Computational Astrophysics.

We also enjoy interacting very closely with our collaborators at large:

• at Astrophysics Sector of Scoula Internazionale Superiore di Studi Avanzati (SISSA) in Trieste, Italy: Carlo Baccigalupi and Davide Poletti.
• in the Computational Cosmology Center (C3) of the Lawrence Berkeley National Laboratory (LBNL) at Berkeley, US: Julian Borrill, Reijo Keskitalo and Ted Kisner.