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- W4302577292 abstract "The spectra of the powerful 3CR radio galaxies present a typical distribution in the far-infrared (FIR). From the observed radio to X-ray spectral energy distribution (SED) templates, we propose to subtract the typical energy distributions of, respectively, the elliptical galaxy host and the synchrotron radiation. The resulting SED reveals that the main dust emission is well fitted by the sum of two blackbody components at the respective temperatures 340 K ± 50 K and 40 K ± 16 K. When the AGN is active, the energy rate released by hot dust is much more dissipative than cold dust and stellar emission, even when the elliptical galaxy emission is maximum at the age of 90 Myr. Hot dust appears as a huge cooling source which implies an extremely short time-scale , on balance with the short gravitational time-scale of massive galaxies. The dissipative self-gravitational models (Rees & Ostriker [CITE]) are favoured for radio sources. They justify the existence of massive radio galaxies discovered at z = 4 (Rocca-Volmerange et al. [CITE]). The synchrotron emission is emitted up to the X-ray wavelength range, so that Extreme X-ray Objects (EXO) could be identified with 3CR radio sources. To confirm these results in the infrared, an analysis of larger data samples from ISO and SPITZER is needed." @default.
- W4302577292 created "2022-10-06" @default.
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- W4302577292 date "2005-03-14" @default.
- W4302577292 modified "2023-10-18" @default.
- W4302577292 title "Evidence of intense hot ($mathsf{simeq}$340 K) dust emission in 3CR radio galaxies" @default.
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- W4302577292 doi "https://doi.org/10.1051/0004-6361:20042106" @default.
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