A 100 años de la Relatividad General sugerimos estos dos articulos del ultimo numero de Science, que tienen acceso libre.
Giant gravitational lens formed by a large cluster of galaxies, RCS2 032727-132623
Science 6 March 2015:
Vol. 347 no. 6226 pp. 1103-1108
DOI: 10.1126/science.aaa4033
REVIEW
A century of general relativity: Astrophysics and cosmology
R. D. Blandford
Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, CA, USA.
ABSTRACT
One hundred years after its birth, general relativity has become a highly successful physical theory in the sense that it has passed a large number of experimental and observational tests and finds extensive application to a wide variety of cosmic phenomena. It remains an active area of research as new tests are on the way, epitomized by the exciting prospect of detecting gravitational waves from merging black holes. General relativity is the essential foundation of the standard model of cosmology and underlies our description of the black holes and neutron stars that are ultimately responsible for the most powerful and dramatic cosmic sources. Its interface with physics on the smallest and largest scales will continue to provide fertile areas of investigation in its next century.
http://www.sciencemag.org/content/347/6226/1103.full?utm_campaign=email-...
------------
Science 6 March 2015:
Vol. 347 no. 6226 pp. 1100-1102
DOI: 10.1126/science.aaa0980
The dark side of cosmology: Dark matter and dark energy
David N. Spergel
Princeton University, Princeton, NJ 08544, USA.
E-mail: dns@astro.princeton.edu
ABSTRACT
A simple model with only six parameters (the age of the universe, the density of atoms, the density of matter, the amplitude of the initial fluctuations, the scale dependence of this amplitude, and the epoch of first star formation) fits all of our cosmological data . Although simple, this standard model is strange. The model implies that most of the matter in our Galaxy is in the form of “dark matter,” a new type of particle not yet detected in the laboratory, and most of the energy in the universe is in the form of “dark energy,” energy associated with empty space. Both dark matter and dark energy require extensions to our current understanding of particle physics or point toward a breakdown of general relativity on cosmological scales.
http://www.sciencemag.org/content/347/6226/1100.full?utm_campaign=email-...