Dr Mathieu Remazeilles
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From 2009 to 2011 I was postdoc at the Laboratoire AstroParticule et Cosmologie in Paris, then at the Institut d'Astrophysique Spatiale in Orsay from 2011 to 2013. I obtained my PhD in theoretical cosmology at the Laboratoire de Physique Théorique in Orsay under the supervision of Martin Bucher.
I have looked at a broad range of topics in Cosmology, going from theoretical aspects, including extra-dimensions and cosmological perturbations, to observational aspects, including CMB lensing, Sunyaev-Zeldovich effects, Component separation, 21 cm intensity mapping, CMB B-mode polarization, primordial spectral distortions, and Planck data analysis (also here, here, and here).
We propose a solution to detect foreground-obscured µ-type spectral distortion anisotropies at redshifts z > 104 and constrain the scale-dependent primordial non-Gaussianity with future CMB satellites.Remazeilles and Chluba, "Extracting foreground-obscured µ-distortion anisotropies to constrain primordial non-Gaussianity", arXiv:1802.10101 (2018)
A comprehensive study of the foregrounds and the component separation problem for primordial CMB B-modes search with the space mission proposal CORE.Remazeilles et al., for the CORE collaboration, "Exploring Cosmic Origins with CORE: B-mode Component Separation", arXiv:1704.04501, accepted by JCAP (2017)
By applying the GNILC component-separation method (Remazeilles et al 2011b) to Planck data, we have significantly reduced the cosmic infrared background (CIB) contamination in the Planck all-sky dust model and improved the estimates of the dust temperature and spectral index at high latitude. We also have extracted the CIB anisotropies on a large fraction of the sky.
The GNILC dust and CIB maps are now publicly released as Planck products on the Planck Legacy Archive (see Release PR2 - 2015, Foreground maps, dust or CIB).
(corresponding author: M. Remazeilles)
The Planck GNILC dust map is shown on the front page of A&A, vol. 596 (December 2016).
We have compared the sensitivity to the tensor-to-scalar ratio of different CMB B-mode satellite concepts after foreground removal.
We also have quantified the impact on the tensor-to-scalar ratio of incorrect foreground modelling.
The Planck SZ all-sky map I have produced by implementing a Needlet Internal Linear Combination algorithm -- NILC -- (Remazeilles et al 2011a) has been made publicly available by the Planck collaboration as part of the Planck 2015 Release of scientific products. Please follow this link to download the Planck NILC SZ map.Planck Collaboration, "Planck 2015 results. XXII. A map of the thermal Sunyaev-Zeldovich effect", A&A 594, A22 (2016)
(corresponding authors: B. Comis, M. Remazeilles)
This is a reprocessed version of the Haslam et al map, showing the Galactic synchrotron emission at 408 MHz, in which I significantly improved the destriping and the subtraction of extra-galactic radio sources.
Please follow this link to download the 2014 reprocessed Haslam map, or download it at the NASA LAMBDA dedicated webpage.
Jodrell Bank Centre for Astrophysics
School of Physics & Astronomy
The University of Manchester
Manchester M13 9PL, U.K.
phone: +44 (0)161 275 4142
E-mail: mathieu "dot" remazeilles "at" manchester "dot" ac "dot" uk