Observing the Universe at millimetre wavelengths

Session

Monday P

26 juin 2023, 14:00

Amphitheatre (LPSC Grenoble)

Présidents de session

Monday P

• Jens Chluba

Monday P

• Tony Mroczkowski (European Southern Observatory (ESO))

16. Planck and SPT cluster catalogs: a combined analysis

Laura Salvati (IAS, Paris-Saclay)

26/06/2023 14:00

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...

35. Detection of Thermal SZ -- CMB Lensing Cross-Correlation in Planck Legacy Data

Colin Hill (Columbia University)

26/06/2023 14:30

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...

25. Small scale CMB cosmological information

Marian Douspis (IAS (Orsay))

26/06/2023 15:00

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...

85. class_sz: a fast and accurate code for SZ and cross-correlations

Boris Bolliet (University of Cambridge)

26/06/2023 15:30

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...

92. Status of the NIKA2 Sunyaev-Zeldovich Large Program

Laurence Perotto (LPSC)

26/06/2023 16:30

The NIKA2 camera operating at the IRAM 30-m telescope has unique performance for the resolved observation of the Sunyaev-Zel’dovich effect towards galaxy clusters. As part of the NIKA2 guaranteed-time, the SZ Large Program (LPSZ) is devoted to the high-angular resolution SZ mapping of a representative sample of about 40 galaxy clusters drawn from the SZ-selected catalogues of the Planck...

79. panco2: ICM pressure profiles from tSZ observations in python

Florian Kéruzoré (Argonne National Laboratory)

26/06/2023 16:55

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...

49. NIKA2 observations of 3 low mass clusters at z ~ 1: P(r) and Y-M relation

Rémi Adam (Laboratoire Lagrange, Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Blvd de l'Observatoire, CS 34229, 06304 Nice cedex 4, France)

26/06/2023 17:15

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...