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26 April 2024 |
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Article overview
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Predictions for high-frequency radio surveys of extragalactic sources | | Gianfranco De Zotti
; Roberto Ricci
; Dino Mesa
; Laura Silva
; Pasquale Mazzotta
; Luigi Toffolatti
; Joaquin Gonzalez-Nuevo
; | | Date: |
28 Oct 2004 | | Subject: | astro-ph | | Abstract: | We present detailed predictions of the contributions of the various source populations to the counts at frequencies of tens of GHz. New evolutionary models are worked out for flat-spectrum radio quasars, BL Lac objects, and steep-spectrum sources. Source populations characterized by spectra peaking at high radio frequencies, such as extreme GPS sources, ADAF/ADIOS sources and early phases of gamma-ray burst afterglows are also dealt with. The counts of different populations of star-forming galaxies (normal spirals, starbursts, high-z galaxies detected by SCUBA and MAMBO surveys, interpreted as proto-spheroidal galaxies) are estimated taking into account both synchrotron and free-free emission, and dust re-radiation. Our analysis is completed by updated counts of Sunyaev-Zeldovich effects in clusters of galaxies and by a preliminary estimate of galactic-scale Sunyaev-Zeldovich signals associated to proto-galactic plasma. | | Source: | arXiv, astro-ph/0410709 | | Services: | Forum | Review | PDF | Favorites | |
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