Kinetic Sunyaev-Zeldovich effect from galaxy cluster rotation

Kinetic Sunyaev-Zeldovich effect from galaxy cluster rotation

We show how the temperature and the polarisation of the cosmic microwave background are affected by bulk rotation of clusters of galaxies owing to the kinetic Sunyaev-Zeldovich effect. The main effects of rotation are (i) a shift of the position of the peak of the temperature fluctuation relative to the center of the cluster by a few percent of the core radius and (ii) a tilt of the direction o...

Kinetic Sunyaev-zel’dovich Effect from Halo Rotation

We discuss the kinetic Sunyaev-Zel’dovich (SZ) contribution to cosmic microwave background (CMB) temperature fluctuations due to the coherent rotational velocity component of electrons within halos. For typical clusters of mass a few times 10 M , this rotational scattering effect produces a distinct dipole-like temperature distribution with a peak fluctuation of the order a few μK, depending on...

Sunyaev–Zeldovich Effect

Are Clusters Standard Candles? Galaxy Cluster Scaling Relations with the Sunyaev-zeldovich Effect

An extensive sample of galaxy clusters will be available in the coming years, detected through their Sunyaev–Zeldovich effect (SZE). We use a semi–analytic model to study the scientific yield of combining SZE data with X-ray and optical follow-up observations. If clusters at a given redshift zo can be identified with virialized, spherical halos, they populate a well–defined ”fundamental plane” ...

The Sunyaev - Zeldovich Effect

During passage through a cluster of galaxies some of the photons of the cosmic microwave background (CMB) radiation are scattered by electrons in the hot intracluster (IC) gas. The scattering slightly modifies the incident Planck spectrum, imprinting on it a unique spectral signature that was first described by Sunyaev & Zeldovich (1972). [The impact of hypothetical hot intergalactic gas on the...