Ionization by early quasars and Cosmic Microwave Background anisotropies

Details Ionization by early quasars and Cosmic Microwave Background anisotropies Ionization by early quasars and Cosmic Microwave Background anisotropies

1996-04-16

arxiv.org/abs/astro-ph/9604083v1

Astronomy and Astrophysics

Astrophysics

11 pages, 9 postscript figures, using l-aa.sty (included), gziped tar tex files; accepted (1995) in Astron.Astrophys

Scientific paper

We discuss the photoionization of the intergalactic medium by early formed quasars and propose a mechanism which could generate measurable temperature fluctuations $\delta_{T }~=~\Delta T/T$ of the cosmic microwave background (CMB). Early quasars produce individual ionized regions around themselves. We evaluate both thermal and kinetic (first-order Doppler) Sunyaev-Zeldovich (SZ) effects associated with those ionized regions.

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