28 citations · 69 across the 7 of their papers we have counts for
6 papers
Sunyaev Zel'dovich effect in galaxy clusters cavities: thermal or non-thermal origin?
P. Marchegiani
Several galaxy clusters host X-ray cavities, often filled with relativistic electrons emitting in the radio band. In the cluster MS 0735.6+7421 the cavities have been detected thro…
Thermal and non-thermal Sunyaev-Zel'dovich effect in the cavities of the galaxy cluster MS 0735.6+7421: the role of the thermal density in the cavity
P. Marchegiani
The galaxy cluster MS 0735.6+7421 hosts two large X-ray cavities, filled with radio emission, where a decrease of the Sunyaev-Zel'dovich (SZ) effect has been detected, without esta…
Simulated differential observations of the Sunyaev-Zel'dovich Effect: Probing the Dark Ages and Epoch of Reionization
Charles Mpho Takalana, Paolo Marchegiani, Geoff Beck +1
This work presents an analytical approach for studying the cosmological 21cm background signal from the Dark Ages (DA) and subsequent Epoch of Reionization (EoR). We simulate diffe…
The application of the adiabatic compression scenario to the radio relic in the galaxy cluster Abell 3411-3412
Charissa Button, Paolo Marchegiani
Although radio relics are understood to originate in intracluster shock waves resulting from merger shocks, the most widely used model for describing this (re-)acceleration process…
Effect of turbulent reacceleration on electrons produced by dark matter annihilation in the Coma cluster
P. Marchegiani
In this paper we study the effect of reacceleration provided by turbulences on electrons produced by dark matter (DM) annihilation in the Coma cluster. We use a simplified phenomen…
Warming rays in cluster cool cores
S. Colafrancesco, P. Marchegiani
We present a model of cosmic ray heating of clusters' cores that reproduces the observed temperature distribution in clusters by using an energy balance condition in which the emit…