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5 papers · 2 filters
Aspherical galaxy clusters: effects on cluster masses and gas mass fractions
Rocco Piffaretti, Philippe Jetzer, Sabine Schindler
We present an investigation of the effects of asphericity on the estimates of total mass and gas mass fraction in galaxy clusters from X-ray observations. We model the aspherical s…
The influence of magnetic fields on the Sunyaev Zel'dovich effect in clusters of galaxies
P. M. Koch, Ph. Jetzer, D. Puy
We study the influence of intracluster large scale magnetic fields on the thermal Sunyaev-Zel'dovich (SZ) effect. In a macroscopic approach we complete the hydrostatic equilibrium…
Cooling flow bulk motion corrections to the Sunyaev Zel'dovich effect
P. M. Koch, Ph. Jetzer, D. Puy
We study the influence of converging cooling flow bulk motions on the Sunyaev-Zel'dovich (SZ) effect. To that purpose we derive a modified Kompaneets equation which takes into acco…
Microlensing towards the Large Magellanic Cloud
Ph. Jetzer, L. Mancini, G. Scarpetta
The nature and the location of the lenses discovered in the microlensing surveys done so far towards the LMC remain unclear. Motivated by these questions we compute the optical dep…
Morphology of Galaxy Clusters and Sunyaev-Zel'dovich effect
Ph. Jetzer, P. Koch, R. Piffaretti +2
Observations of the X-ray band wavelength reveal an evident ellipticity of many galaxy clusters atmospheres. The modeling of the intracluster gas with an ellipsoidal -model lead…