A5103094344- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Advanced Data Storage Technologies
- Cosmology and Gravitation Theories
- Gamma-ray bursts and supernovae
- Astronomy and Astrophysical Research
University of Bologna
2016-2018
Osservatorio di Astrofisica e Scienza dello Spazio
2018
University of Wisconsin–Milwaukee
2018
Osservatorio astronomico di Bologna
2016
Deriving the expansion history of Universe is a major goal modern cosmology. To date, most accurate measurements have been obtained with Type Ia Supernovae (SNe) and Baryon Acoustic Oscillations (BAO), providing evidence for existence transition epoch at which rate changes from decelerated to accelerated. However, these results within framework specific cosmological models that must be implicitly or explicitly assumed in measurement. It therefore crucial obtain accelerated independently...
Abstract The expansion history of the universe can be constrained in a cosmology-independent way by measuring differential age evolution cosmic chronometers. This yields measurement Hubble parameter H ( z ) as function redshift. most reliable chronometers known so far are extremely massive and passively evolving galaxies. Age-dating these galaxies is, however, difficult task, even small contribution an underlying young stellar population could, principle, affect estimate its cosmological...