Observing the Universe at millimetre wavelengths

Session

Friday P

30 juin 2023, 13:30

LPSC Grenoble

Présidents de session

Friday P

• Lindsey Bleem (Argonne National Laboratory)

Friday P

• Laurence Perotto (LPSC)

18. Probing the Evolution of the Intracluster Medium with Joint X-ray+SZ Surveys

Michael McDonald (MIT)

30/06/2023 13:30

I will discuss the progress that has been made by coming SZ data from the South Pole Telescope (SPT) with X-ray data from Chandra and XMM-Newton. To date, we have followed up hundreds of SPT-selected clusters with these two X-ray telescopes, providing the strongest constraints on the enrichment history of the intracluster medium (ICM), the dynamical evolution of clusters, the cooling and...

20. First massive galaxy clusters emerging from the cosmic web at z~2

Stefano Andreon (INAF-OA Brera)

30/06/2023 14:00

In this talk we report upon results the intracluster medium (ICM) of two galaxy clusters at the time the first objects start to emerge from the cosmic web, z~2. Results are derived from new high resolution, deep SZ and X-ray data providing us with the measurement of the two most distant resolved pressure profiles. IDCSJ1426 cluster at z=1.75 has a core whose properties has likely reached the...

84. The South Pole Telescope Strong Lensing Cluster Sample

Lindsey Bleem (Argonne National Laboratory)

30/06/2023 14:55

The strong gravitational lensing regime provides a unique probe of structure formation in the Universe. There has been significant effort to identify and characterize strong lensing clusters selected in the X-ray and optical wavelengths; here we extend such studies to a large sample of strong lensing clusters identified by the Sunyaev Zel'dovich (SZ) effect in >5,000 square degrees of South...

81. Prospects for Kinematic Sunyaev-Zeldovich Measurements from South Pole Telescope data.

Srinivasan Raghunathan (National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign)

30/06/2023 15:15

The Doppler boosting of cosmic microwave background (CMB) photons due to scattering off free electrons produces the Kinematic Sunyaev-Zeldovich (kSZ) effect. It offers a unique way to probe the epoch of reionisation. However, the kSZ signal is sub-dominant to other astrophysical signals, in particular the emission from dusty star forming galaxies that form the diffuse component of the cosmic...

91. Fluctuations in Galaxy Clusters at millimeter wavelengths

Charles Romero (Center for Astrophysics | Harvard & Smithsonian)

30/06/2023 15:40

Cosmological constraints from galaxy clusters are currently limited by the precision of mass estimation. Non-thermal pressure support is suspected to be the primary culprit in biasing mass estimations from the intracluster medium (ICM). Moreover, (quasi-)turbulent gas motions are thought to be the dominant source of non-thermal pressure, in which case high resolution X-ray spectrographs on...

107. Coffee Break