Stefano Camera

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The large-scale structure of the Universe supplies crucial information about the physical processes at play at early times. Unresolved maps of the intensity of 21 cm emission from neutral hydrogen HI at redshifts z=/~1-5 are the best hope of accessing the ultralarge-scale information, directly related to the early Universe. A purpose-built HI intensity(More)
Weak gravitational lensing is a powerful tool for studying both the geometry and the dynamics of the Universe. Its power spectrum contains information on the sources emitting photons and on the large-scale structures that these photons cross. We calculate the weak lensing cosmic convergence and shear power spectra, in linear theory and Limber’s(More)
In the last few decades, cosmological measurements have reached an unprecedented level of precision, and cosmology is now on the threshold of a new era of observational evidence. In the next future, a vast number of telescopes, satellites and surveys will provide us with accurate, multi-wavelength data that will allow us to investigate the fundaments of our(More)
Filipe B. Abdalla∗1,2, Philip Bull3, Stefano Camera4, Aurélien Benoit-Lévy1, Benjamin Joachimi1, Donnacha Kirk1, Hans-Rainer Klöckner5, Roy Maartens 6,7, Alvise Raccanelli8,9, Mario G. Santos4,6,10, Gong-Bo Zhao11,7 on behalf of the Cosmology SWG. 1Department of Physics and Astronomy, University College London, London WC1E 6BT, UK 2Department of Physics and(More)
In this paper we explore the impact of including redshift information on cosmological applications with the forthcoming generation of large-scale, deep radio continuum surveys. By cross-matching these radio surveys with shallow optical to near-infrared surveys we can essentially separate the source distribution into a low redshift sample and the high-z tail(More)
We show how future gravitational-wave detectors would be able to discriminate between the concordance Λ cold dark matter cosmological model and up-to-date competing alternatives, e.g., dynamical dark energy (DE) models or modified gravity (MG) theories. Our method consists of using the weak-lensing magnification effect that affects a standard-siren signal(More)
1 Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA 2 California Institute of Technology, Pasadena, California 91125, USA 3 Institute of Cosmology & Gravitation, University of Portsmouth, Portsmouth P01 3FX, UK 4 Physics Department, University of the Western Cape, Cape Town 7535, South Africa 5 SKA SA, 3rd Floor,(More)
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