The evidence for the existence of dark energy is conclusive, but its nature remains one of the most puzzling mysteries in all of physics. Astronomical surveys...
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CharlaFrom Cosmology to Galaxies and Back Again
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PublicaciónFundamental physics with ESPRESSO: Constraining a simple parametrisation for varying α
Context. The spectrograph ESPRESSO recently obtained a limit on the variation of the fine-structure constant, α, through measurements along the line of sight of...
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CharlaHow to use a cosmological N-body simulation as a theoretical model
A key problem that we are facing in cosmology nowadays is that we cannot make accurate predictions with our current theoretical models. We have all of the...
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CharlaHow well does galaxy clustering constrain cosmology?
On the LCDM cosmology, dark matter collapses into virialised objects called haloes. The abundance and distribution of these haloes are a direct consequence of...
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CharlaMeasuring Dark Energy with Massive Redshift Surveys
The Baryon Oscillation Spectroscopic Survey (BOSS) is a Stage III dark energy experiment on the Sloan Telescope. For the five years from 2009-2014, we are...
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PublicaciónNonextensive scalar field theories and dark energy models
Current astronomical measurements indicate that approximately 73% of the universe is made up of dark energy. Stochastically quantized self-interacting scalar...
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NoticiaNueva luz sobre la materia bariónica perdida y la gravedad en escalas cósmicas
Los científicos estiman que la materia oscura y la energía oscura representan el 95% del Universo y que el 5% restante está constituida por la materia bariónica...
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CharlaOpen questions and Non-Standard models
I will review some theoretical ideas in Cosmology different to the standard "Big Bang": the Quasi-steady State model, Plasma Cosmology model, non-cosmological...
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PublicaciónOverview of the Instrumentation for the Dark Energy Spectroscopic Instrument
The Dark Energy Spectroscopic Instrument (DESI) embarked on an ambitious 5 yr survey in 2021 May to explore the nature of dark energy with spectroscopic...