Maximum likelihood kinetic Sunyaev-Zel’dovich velocity reconstruction

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...

Sunyaev–Zeldovich Effect

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...

Maximum Likelihood Cluster Reconstruction

We present a novel method to reconstruct the mass distribution of galaxy clusters from their gravitational lens effect on background galaxies. The method is based on a least-x 2 fit of the two-dimensional gravitational cluster potential. The method combines information from shear and magnification by the cluster lens and is designed to easily incorporate possible additional information. We desc...

Sunyaev-Zeldovich Contributions from Early Supernova Winds

The purpose of this research was to determine the contributions to the Sunyaev-Zeldovich effect from supernova winds at high redshift. In order to accomplish this, the shells were modeled individually to study the dependance of their behavior on the basic input parameters of the system, such as initial redshift and initial dark matter halo mass, especially at asymptotic bounds. Finally, the Com...