Constraining high-redshift X-ray sources with next generation 21-cm power spectrum measurements
نویسندگان
چکیده
منابع مشابه
Weak Gravitational Lensing of High-redshift 21 Cm Power Spectra
We describe the effects of weak gravitational lensing by cosmological large scale structure on the diffuse emission of 21 centimeter radiation from neutral hydrogen at high redshifts during the era of reionization. The ability to observe radial information through the frequency, and thus threedimensional regions of the background radiation at different redshifts, suggests that 21 cm studies may...
متن کاملScintillation noise power spectrum and its impact on high-redshift 21-cm observations
Visibility scintillation resulting from wave propagation through the turbulent ionosphere can be an important source of noise at low radio frequencies (ν 200MHz). Many low-frequency experiments are underway to detect the power spectrum of brightness temperature fluctuations of the neutral-hydrogen 21-cm signal from the Epoch of Reionization (EoR: 12 z 7, 100 ν 175 MHz). In this paper, we derive...
متن کاملHigh redshift FRII radio sources : large - scale X - ray environment
We investigate the properties of the environment around 20 powerful radio galaxies and quasars at redshifts between 0.45 and 1. Using XMM-Newton and Chandra observations we probe the spatial distribution and the temperature of the cluster gas. We find that more than 60 per cent of powerful radio sources in the redshift range of our sample lie in a cluster of X-ray luminosity greater than 10 erg...
متن کاملRedshift Space 21 Cm Power Spectra from Reionization
We construct a simple but self-consistent analytic ionization model for rapid exploration of 21cm power spectrum observables in redshift space. It is fully described by the average ionization fraction xe(z) and HII patch size R(z) and has the flexibility to accommodate various reionization scenarios. The model associates ionization regions with dark matter halos of the number density required t...
متن کاملEnabling the next generation of cm-wavelength studies of high-redshift molecular gas with the SKA
Jeff Wagg∗1, Elisabete Da Cunha2, Christopher L. Carilli3,4, Fabian Walter2, Manuel Aravena5, Ian Heywood6,7, Jacqueline Hodge8, Eric Murphy9, Dominik Riechers10, Mark Sargent11, and Ran Wang12 1SKA Organisation, Lower Withington, UK; 2MPIA, Heidelberg, Germany; 3NRAO, Socorro, USA; 4Cavendish Astrophysics Group, Cambridge, UK; 5U. Diego Portales, Santiago, Chile; 6CASS, Sydney, Australia; 7RAT...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2016
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stw452