Search Publications
Constraints from thermal Sunyaev-Zel'dovich cluster counts and power spectrum combined with CMB
Salvati, Laura; Douspis, Marian; Aghanim, Nabila
The thermal Sunyaev-Zel'dovich (tSZ) effect is one of the recent probes of cosmology and large-scale structures. We update constraints on cosmological parameters from galaxy clusters observed by the Planck satellite in a first attempt to combine cluster number counts and the power spectrum of hot gas; we used a new value of the optical depth and, …
DustPedia: Multiwavelength photometry and imagery of 875 nearby galaxies in 42 ultraviolet-microwave bands
Bianchi, S.; Fritz, J.; De Looze, I. +16 more
Aims: The DustPedia project is capitalising on the legacy of the Herschel Space Observatory, using cutting-edge modelling techniques to study dust in the 875 DustPedia galaxies - representing the vast majority of extended galaxies within 3000 km s-1 that were observed by Herschel. This work requires a database of multiwavelength im…
Dust models compatible with Planck intensity and polarization data in translucent lines of sight
Miville-Deschênes, M. -A.; Boulanger, F.; Levrier, F. +6 more
Context. Current dust models are challenged by the dust properties inferred from the analysis of Planck observations in total and polarized emission.
Aims: We propose new dust models compatible with polarized and unpolarized data in extinction and emission for translucent lines of sight (0.5 < AV < 2.5).
Methods: We amen…
The XMM Cluster Outskirts Project (X-COP): Thermodynamic properties of the intracluster medium out to R200 in Abell 2319
Hurier, G.; Pointecouteau, E.; Molendi, S. +5 more
Aims: We present the joint analysis of the X-ray and Sunyaev-Zel'dovich (SZ) signals in Abell 2319, the galaxy cluster with the highest signal-to-noise ratio in SZ Planck maps and that has been surveyed within our XMM-Newton Cluster Outskirts Project (X-COP), a very large program which aims to grasp the physical condition in 12 local (z < …
Gas and galaxies in filaments between clusters of galaxies. The study of A399-A401
Aghanim, N.; Douspis, M.; Salomé, P. +2 more
We have performed a multi-wavelength analysis of two galaxy cluster systems selected with the thermal Sunyaev-Zel'dovich (tSZ) effect and composed of cluster pairs and an inter-cluster filament. We have focused on one pair of particular interest: A399-A401 at redshift z ~ 0.073 seperated by 3 Mpc. We have also performed the first analysis of one l…
The Local Bubble: a magnetic veil to our Galaxy
Boulanger, F.; Alves, M. I. R.; Montier, L. +1 more
The magnetic field in the local interstellar medium does not follow the large-scale Galactic magnetic field. The local magnetic field has probably been distorted by the Local Bubble, a cavity of hot ionized gas extending all around the Sun and surrounded by a shell of cold neutral gas and dust. However, so far no conclusive association between the…
Star formation history from the cosmic infrared background anisotropies
Lagache, G.; Béthermin, M.; Maniyar, A. S.
We present a linear clustering model of cosmic infrared background (CIB) anisotropies at large scales that is used to measure the cosmic star formation rate density up to redshift 6, the effective bias of the CIB, and the mass of dark matter halos hosting dusty star-forming galaxies. This is achieved using the Planck CIB auto- and cross-power spec…
The dense cores and filamentary structure of the molecular cloud in Corona Australis: Herschel SPIRE and PACS observations from the Herschel Gould Belt Survey
White, G. J.; André, Ph.; Arzoumanian, D. +16 more
We present a catalogue of prestellar and starless cores within the Corona Australis molecular cloud using photometric data from the Herschel Space Observatory. At a distance of d 130 pc, Corona Australis is one of the closest star-forming regions. Herschel has taken multi-wavelength data of Corona Australis with both the Spectral and Photometric I…
The magnetic environment of the Orion-Eridanus superbubble as revealed by Planck
Soler, J. D.; Bracco, A.; Pon, A.
Using the 353-GHz polarization observations by the Planck satellite we characterize the magnetic field in the Orion-Eridanus superbubble, a nearby expanding structure that spans more than 1600 square degrees in the sky. We identify a region of both low dispersion of polarization orientations and high polarization fraction associated with the outer…
Evidence of a truncated spectrum in the angular correlation function of the cosmic microwave background
López-Corredoira, M.; Melia, F.
Aim. The lack of large-angle correlations in the fluctuations of the cosmic microwave background (CMB) conflicts with predictions of slow-roll inflation. But while probabilities (≲0.24%) for the missing correlations disfavour the conventional picture at ≳3σ, factors not associated with the model itself may be contributing to the tension. Here we a…