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7 papers · 2 filters
Dipolar Dark Matter and Cosmology
Luc Blanchet, David Langlois, Alexandre Le Tiec +1
The phenomenology of the modified Newtonian dynamics (MOND) can be recovered from a mechanism of "gravitational polarization" of some dipolar medium playing the role of dark matter…
The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological implications of the full shape of the clustering wedges in the data release 10 and 11 galaxy samples
Ariel G. Sanchez, Francesco Montesano, Eyal A. Kazin +25
We explore the cosmological implications of the angle-averaged correlation function, xi(s), and the clustering wedges, xi_perp(s) and xi_para(s), of the LOWZ and CMASS galaxy sampl…
What have we learned from observational cosmology ?
Jean-Christophe Hamilton
We review the observational foundations of the CDM model, considered by most cosmologists as the standard model of cosmology. The Cosmological Principle, a key assumption of the…
A Dust-Obscured Massive Maximum-Starburst Galaxy at a Redshift of 6.34
Dominik A. Riechers, C. M. Bradford, D. L. Clements +61
Massive present-day early-type (elliptical and lenticular) galaxies probably gained the bulk of their stellar mass and heavy elements through intense, dust-enshrouded starbursts -…
Can all cosmological observations be accurately interpreted with a unique geometry?
Pierre Fleury, Hélène Dupuy, Jean-Philippe Uzan
The recent analysis of the Planck results reveals a tension between the best fits for (Ωm0, H0) derived from the cosmic microwave background or baryonic acoustic oscillations on th…
Modelling narrow-line regions of active galaxies in the Sloan Digital Sky Survey - I.Sample selection and physical conditions
Zhitai Zhang, Yanchun Liang, François Hammer
We systematically determine the electron density and electron temperature of active galaxies and star-forming galaxies using spectroscopy from the SDSS DR7, while mainly focusing o…