Sunyaev-Zel'dovich effect from quasar-driven blast waves

Sunyaev-Zeldovich Effect from Quasar-driven Blast-waves

Quasar-driven winds are currently the best candidates for accounting for the preheating of the intergalactic medium in clusters. Such winds, occurring during early phases of the evolution of spheroidal galaxies, shock-heat the interstellar gas, thus inducing a detectable Sunyaev-Zeldovich effect. We estimate the amplitude and the angular scale of such effect as well as its counts as a function ...

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...

A Measurement of H0 from the Sunyaev-zeldovich Effect

We present a determination of the Hubble constant, H0, from measurements of the Sunyaev-Zeldovich effect in an orientation-unbiased sample of seven galaxy clusters. With improved X-ray models and a more z ! 0.1 accurate 32 GHz calibration, we obtain km s 1 Mpc 1 for a standard cold dark matter (CDM) 14 H p 64 14 0 11 sys cosmology, or km s 1 Mpc 1 for a flat LCDM cosmology. In combination with ...

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...