Carlos Garcia-Garcia

Biography

I am Beecroft Fellow at the Astrophysics department working on shedding light to one of the most pressing questions in Physics: ”What is the nature of dark energy and gravity on cosmological scales?”. Dark energy is the main energy component of the Universe and fuels its current phase of accelerated expansion. However, its nature is unknown.

I use the distribution of galaxies, their shape and light emitted by gas in the Universe to investigate the nature of dark energy and Gravity at cosmological scales. Galaxy positions and the deformation of their shapes due to the weak lensing effect (i.e. the deflection of light by matter between the emitting galaxy and us) are excellent probes of the Universe’s evolution and can be used to validate our theoretical models.

I am member of the Vera C. Rubin Observatory (Rubin) and Euclid missions, two big international collaborations that will observe billions of galaxies in the next decade, and will profoundly shape our understanding of the Universe. In particular, I am leading the main cosmological analysis working group of Rubin, and have earned the DESC Builder status due to my extensive contributions to its data analysis infrastructure.

Research Interests
Cosmology, dark energy and modified gravity, large scale structure of the Universe, data analysis