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Research outline

Search for extrasolar planets

Microlensing effectThe light of a background source can be focused by the microlensing effect if a planetary system passes close to the line of sight. I have been working on the characterization of light curves for binary and planetary lenses. I have realized the first fully automatic system for real-time modeling of microlensing events without human intervention. I participate in the MiNDSTEp collaboration for exoplanet search through microlensing.
As responsible of the Astronomical Observatory at Salerno University, I participate in projects for exoplanet search through microlensing and transit methods.

Gravitational lensing by Black Holes

A caustic generated by a black holeThe gravitational field of black holes can bend the trajectory of light rays in a dramatic way. I have derived a universal formula for light bending by black holes in the strong deflection limit. By observing higher order images it is possible to test alternative theories of gravity. We have considered the specific case of the  supermassive black hole Sgr A*, predicting the position and the luminosity of higher order images for known stars.

Early Universe Cosmology

The Big Bang singularity can be cured and replaced by a cosmic bounce in the context of String Theory. I have been working on models for bouncing cosmologies (in particular Pre-Big Bang cosmology with Gabriele Veneziano), the evolution of perturbations and anisotropies in bouncing cosmologies, Trans-Planckian effects on the primordial perturbation spectrum.

Research groups:

Dott. Valerio Bozza   


OGLE-2008-BLG-510: first automated real-time detection of a weak microlensing anomaly - brown dwarf or stellar binary?
V. Bozza et al.
MNRAS 424 (2012) 902 -918

Gravitational lensing by black holes
V. Bozza
General Relativity and Gravitation 42 (2010) 2269-2300. Invited Review

Frequency of Solar-Like Systems and of Ice and Gas Giants Beyond the Snow Line from High-Magnification Microlensing Events in 2005-2008
A. Gould, ..., V. Bozza, et al.
Astrophysical Journal 720 (2010) 1073-1089 .

A general solution for scalar perturbations in bouncing cosmologies
V. Bozza
Journal of Cosmology and Astroparticles 0602 (2006) 009, 23 pages.

Cosmological Perturbations from a New-Physics Hypersurface
V. Bozza, M. Giovannini, G. Veneziano
 Journal of Cosmology and Astroparticles 05 (2003) 001, 12 pages.

Gravitational lensing in the strong field limit
V. Bozza
Physical Review D66 (2002) 103001, 10 pages.


in costruzione ....


in costruzione ...

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