Modified gravity: the CMB, weak lensing and general parameterisations
نویسندگان
چکیده
منابع مشابه
Second-order weak lensing from modified gravity
R. Ali Vanderveld, Robert R. Caldwell, and Jason Rhodes Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA Kavli Institute for Cosmological Physics, Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA Department of Physics and As...
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The idea that we live in a Universe undergoing a period of acceleration is a new, yet strongly held, notion in cosmology. As this can, potentially, be explained with a modification to General Relativity we look at current cosmological data with the purpose of testing aspects of gravity. Firstly we constrain a phenomenological model (mDGP) motivated by a possible extra dimension. This is charact...
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Weak gravitational lensing has several important effects on the cosmic microwave background (CMB): it changes the CMB power spectra, induces non-Gaussianities, and generates a B-mode polarization signal that is an important source of confusion for the signal from primordial gravitational waves. The lensing signal can also be used to help constrain cosmological parameters and lensing mass distri...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2011
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2011/03/036