Recently, Jan, Laura, and Radek submitted a paper proposing new techniques for solving a sequence of linear algebraic systems arising in time-domain component separation. The approach we have proposed combines: 1) two-level preconditioner where the second level is built progressively …
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3rd year kick-off scheduled !
The kick-off of the 3rd year activities is scheduled for March 6 and will take place at the APC Laboratory. More info soon !…
Centre Pierre Binétruy (part II)
Just got going. Officially. After the formal signing ceremony on Sept 26, 2019 the Center has officially begun its activities from Jan 01, 2020 !
Between many other science …
‘B-modes from space’, 2019 edition …
We have had notable presence during the bi-annual, ‘B-modes from space’ workshop which has taken place in Munich this time. Clara, Clément, Hamza and Josquin went there to check the state-of-play in …
Tour de Pologne
Radek gave three talks over two days early this week during his visit to Poland: (1) at the Copernicus Astronomical Center (Nov 18 at 11am), (2) at the National Center for Nuclear …
B3DCMB results presented during a meeting !
Radek has given an invited overview of some of the results produced by the B3DCMB project to a cosmological audience during the meeting held at Institute of Fundamental Physics of the Universe in Trieste, Italy, and focused on “Fundamental Physics …
So no …
the astrophysics are not completely useless they just need to … quit … (aka as ‘there is life after the astrophysics’) … check this article (and yes, – DISCLAIMER – we do know some of the characters !).…
Dominic got some title …
Dominic Beck, a graduate student at APC collaborating on the B3DCMB project and an author of the project logo and most of the graphics on this website, successfully defended …
Center Pierre Binetruy
Center Pierre Binetruy (CPB) for cosmological and astroparticule physics has just come to existence ! The official signing ceremony took place on Sept 27. The center is an International Research Laboratory (IRL) between CNRS (and specifically its Institute for Particle …
A new postdoc has just arrived …
Over the summer we have successfully completed the search for a new postdoc and are pleased to announce that our selected candidate, Clemént Leloup, has not only accepted our offer but started (effective Sept 01, 2019) his work as a …
Search for a postdoctoral researcher continues !!!
We continue looking for a postdoctoral researcher who will work at the APC Laboratory on CMB data analysis and in particular on component separation techniques. The post is now officially advertised on the National Center for Scientific Research website.…
Astronomy for kids!
Clara participated in an Astronomy Day at school for kids from 8 to 10, organized by Universciel. She hosted a workshop dedicated to the light: why is it so important in astronomy, what does the color of an object …
Lecture for “Teaching the Universe” program
Josquin Errard participated to Teaching the Universe (https://ikhone.wixsite.com/univers-teach), a program organized by the Paris Center for Cosmological Physics.
This two-day training aimed at providing an overview of the current research in astroparticles and cosmology to high school teachers.…
Lecture on HPC in cosmology for SUPELEC undergrads !
Om May 6, Radek gave a lecture on computational challenges in astrophysics and cosmology to the first year undergraduate students at CenteraleSupelec with a major in physics and nano-technologies to kick-off a course on statistics and machine learning for cosmology …
Laura gives plenary talk at SIAM Computational Science and Engineering conference
While this may not be the hottest news as the meeting took place in Spokane, WA, US in February, but the talk and the viewgraphs are finally on-line !
Check them out !
You may also want to see Jan’s …
New student joining the project
Baptiste Jost, a Master 2 student from the master program NPAC, has joined our group at APC and will work closely with the B3DCMB project. Baptiste is currently doing his M2 internship but, upon a successful completion of his M2 …
Students on the roll
Clara Vergès and Hamza El-Bouhargani, PhD students working within the B3DCMB project, have been awarded travel grants from Université Paris-Diderot under the “Aires Culturelles” program of the University. The funds are dedicated to support a long term, collaborative visit to …
Results of the B3DCMB project during SIAM CSE19
Some of our results and ideas concerning preconditioners and linear solvers were recently presented during SIAM Conference on Computational Science and Engineering in Spokane. Within the minisyposium organized by the NLAFET consortium (that includes a part of Laura Grigori’s team), …
2nd year kick-off scheduled !
The 2nd year kick-off meeting is scheduled to take place on Feb 21 at INRIA ! Check our meeting page for more details.…
All on board !
With Gabriel Ducrocq who officially started his doctoral studies at ENSAE on Dec 1, the project is at its full strength !
Gabriel joins other PhD students, Thibault Cimic (INRIA), Hamza El Bouhargani (APC), and, a postdoc, Aygul Jamal (APC), …
A talk featuring results of the B3DCMB project
Some of the results and contributions of the B3DCMB project including a brief overview of the MIDAPACK library were featured in an invited talk given by R. Stompor on “Computational challenges of the cosmic microwave background data analysis” …
and papers, papers, …
The paper by Giuseppe on “Iterative map-making with two-level preconditioning for polarized cosmic microwave background data sets. A worked example for ground-based experiments” (see Davide’s post here) has been just published (Puglisi et al, 2018, Astronomy & Astrophysics, …
meetings, meetings, and more meetings …
Next week members of the B3DCMB project get (nearly) evenly split between:
Masterclass in Bayesian Statistics co-organized by our very own Nicolas Chopin at CIRM in Marseille; Hamza and Nicolas will be there !
and
Cosmo lectures at LAL
Our collaborators at LAL (Sophie Henrot-Versille and Matt Tristram) are organizing a series of lectures on the physics of the cosmic microwave background. From an email from Sophie:
Dear all On the 15th, 16th and 17th of october, Eiichiro Komatsu,…
New PhD students have just started !
Thibault Cimic and Hamza El Bouhargani have just started their PhD work at INRIA (supervised by: L. Grigori) and APC (supervised by: R. Stompor and J. Errard), respectively. Thibault will work on novel solvers to linear systems of equations as …
Two postdoctoral positions available !!!
Next collaboration meeting, May 17
We will have our next collaboration meeting on May 17 at ENSAE. The focus will be on Bayesian computation techniques. On this occasion we will host Davide Poletti of SISSA for a week starting from May 16.…
Matching funds from DIM-ACAV
Good news ! We have received funding from DIM-ACAV for one extra year of a postdoc to complement the funding from the ANR. The job advert will be out very soon. Watch this space !!!…
New paper on linear solvers for the CMB data analysis
CMB data analysis commonly involves solution of large systems of equations. Finding appropriate solvers for these systems is a subject of ongoing research and one of the aims of B3DCMB project. The fact that, in general, the system matrix cannot …
One more step towards getting CMB maps in fewer steps
Cosmic microwave background (CMB) experiments chase faint signals from the primordial universe by continuously scanning the sky for years. Their cameras are typically read out hundreds of times per second, delivering the so-called time ordered data, which are nothing but …
B3DCMB github
The B3DCMB github team repository is up and running and free of charge thanks to the academic discount accorded to us by the GitHub organization. (Thanks !!!) We will use it for all the common software development tasks undertaken as …
New master students
We welcome Hamza El Bouhargani and Thibault Cimic who are joining the B3DCMB team as Master2 interns at APC and INRIA, respectively. They will start their internship in mid-April. We look forward to a long and fruitful collaboration !…
Project B3DCMB on the go !
As is, after a couple of hiccups and false starts, its website. Still very imperfect and under construction, but it is there !…