Présidents de session
Monday P
- Jens Chluba
Monday P
- Tony Mroczkowski (European Southern Observatory (ESO))
Galaxy clusters are a powerful cosmological probe, being able to describe the latest evolution of large scale structure.
In recent years, cluster catalogs of thousands of objects have been detected in the mm wavelengths, through the thermal Sunyaev-Zeldovich effect.
In this talk I will show the results for the first combined analysis of clusters detected by the Planck satellite and the...
We report a high-precision detection of the cross-correlation of the thermal Sunyaev-Zel'dovich (tSZ) effect and gravitational lensing of the cosmic microwave background (CMB) using data from the Planck 2018 legacy release. This is only the second reported detection of this cross-correlation to date, following early work using the Planck nominal mission data (Hill & Spergel 2014). In our...
The Cosmic Microwave data at very small scales are known to probe not only primordial CMB fluctuations but also many extragalactic components such as tSZ, kSZ, CIB, points sources.
I will show how to use the cosmological dependent SZ signatures (tSZ and kSZ) at small scales coherently with the large scales and the cosmology framework in Planck and SPT experiments to retrieve both...
Class_sz is at the core of several pipelines for parameter inference in the Atacama Cosmology Telescope and the Simons Observatory. It enables a fast and accurate evaluation of SZ observables, such as the SZ power spectrum, cluster number counts and kinetic SZ cross-correlations, as well as cross and auto-correlations between a wide range of large-scale structure tracers, including CMB and...
Measuring the distribution of gas pressure in galaxy clusters is a key ingredient of cluster science, both from a cosmological and an astrophysical standpoint. Millimeter-wave observations offer highly valuable datasets for these measurements thanks to the thermal Sunyaev-Zeldovich (tSZ) effect, a spectral distorsion of the CMB with an amplitude directly proportional to the line of...
Three galaxy clusters selected from the XXL X-ray survey at high redshift and low mass (z ~ 1 and M500 ~ 1-2 x 10^14 Msun) were observed with NIKA2 to image their Sunyaev-Zel'dovich effect (SZE) signal. They all present an SZE morphology, together with the comparison with X-ray and optical data, that indicates dynamical activity related to merging events. Despite their disturbed intracluster...
