SZ effect from radio-galaxy lobes: astrophysical and cosmological relevance

Abstract

We derive the SZ effect arising in radio-galaxy lobes that are filled with high-energy, non-thermal electrons. We provide here quantitative estimates for SZ effect expected from the radio galaxy lobes by normalizing it to the Inverse-Compton light, observed in the X-ray band, as produced by the extrapolation to low energies of the radio emitting electron spectrum in these radio lobes. We compute the spectral and spatial characteristics of the SZ effect associated to the radio lobes of two distant radio galaxies (3C294 and 3C432) recently observed by Chandra, and we further discuss its detectability with the next generation microwave and sub-mm experiments with arcsec and $\sim \mu$K sensitivity. We finally highlight the potential use of the SZE from radio-galaxy lobes in the astrophysical and cosmological context.

8 pages, 5 figures, MNRAS in press

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• Discovery of the low-energy cutoff in a powerful giant radio galaxy
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Cited by in corpus (8)

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• Relativistic inverse Compton scattering of photons from the early universe
• Non-thermal Sunyaev-Zeldovich signal from radio galaxy lobes
• Atacama Large Aperture Submillimeter Telescope (AtLAST) Science: Resolving the Hot and Ionized Universe through the Sunyaev-Zeldovich effect
• Constraining the average magnetic field in galaxy clusters with current and upcoming CMB surveys
• Scaling Laws in High-Energy Inverse Compton Scattering
• The non-thermal secondary CMB anisotropies from a cosmic distribution of radio galaxy lobes