Publications (8)
Super-resolution in map-making based on a physical instrument model and regularized inversion. Application to SPIRE/Herschel
F. Orieux, J. -F. Giovannelli, T. Rodet +3
We investigate super-resolution methods for image reconstruction from data provided by a family of scanning instruments like the Herschel observatory. To do this, we constructed a…
Data inversion for over-resolved spectral imaging in astronomy
T. Rodet, F. Orieux, J. -F. Giovannelli +1
We present an original method for reconstructing a three-dimensional object having two spatial dimensions and one spectral dimension from data provided by the infrared slit spectro…
Planck 2013 results. XV. CMB power spectra and likelihood
Planck collaboration, P. A. R. Ade, N. Aghanim +257
We present the Planck likelihood, a complete statistical description of the two-point correlation function of the CMB temperature fluctuations. We use this likelihood to derive the…
Planck 2013 results. VI. High Frequency Instrument data processing
Planck Collaboration, P. A. R. Ade, N. Aghanim +235
We describe the processing of the 531 billion raw data samples from the High Frequency Instrument (hereafter HFI), which we performed to produce six temperature maps from the first…
Planck 2013 results. I. Overview of products and scientific results
Planck Collaboration, P. A. R. Ade, N. Aghanim +398
The ESA's Planck satellite, dedicated to studying the early Universe and its subsequent evolution, was launched 14 May 2009 and has been scanning the microwave and submillimetre sk…
Physical properties of the Sh2-104 HII region as seen by Herschel
J. A. Rodón, A. Zavagno, J. -P. Baluteau +46
Context: Sh2-104 is a Galactic H ii region with a bubble morphology, detected at optical and radio wavelengths. It is considered the first observational confirmation of the collect…
Efficient sampling of high-dimensional Gaussian fields: the non-stationary / non-sparse case
F. Orieux, O. Féron, J. -F. Giovannelli
This paper is devoted to the problem of sampling Gaussian fields in high dimension. Solutions exist for two specific structures of inverse covariance : sparse and circulant. The pr…
Estimating hyperparameters and instrument parameters in regularized inversion. Illustration for SPIRE/Herschel map making
F. Orieux, J. -F. Giovannelli, T. Rodet +1
We describe regularized methods for image reconstruction and focus on the question of hyperparameter and instrument parameter estimation, i.e. unsupervised and myopic problems. We…