96392 - GRAVITATIONAL LENSING

Anno Accademico 2024/2025

  • Modalità didattica: Convenzionale - Lezioni in presenza
  • Campus: Bologna
  • Corso: Laurea Magistrale in Astrophysics and Cosmology (cod. 5828)

Conoscenze e abilità da conseguire

At the end of the course, the student will acquire the basic knowledge of the theory of gravitational lensing, and will be able to discuss the applications of lensing in different astrophysical branches. In particular, the student will be able to distinguish between different regimes of lensing (strong, weak, etc) and will learn through examples how to carry out lensing analyses. The basics of the Python programming language will also be taught to allow the students to better understand the examples and work on small projects.

Contenuti

The course covers:

The propagation of light in a gravitational field.

The lensing equation & lensing potential.

Shear & convergence

Microlensing in our galaxy

detection of planets

Strong Gravitational lensing by galaxies

lens models and their properties

Strong Gravitational lensing by galaxy clusters

  Lens modelling

Weak gravitational lensing

density reconstruction

cosmic shear & cosmology

The gravitational lensing of the cosmic microwave background

Testi/Bibliografia

"Introduction to Gravitational Lensing - with python examples", M. Meneghetti, 2021, Springer-Verlag

"Principles of Gravitational Lensing" - Congdon & Keeton

"Gravitational Lensing" - Dodelson

"Gravitational Lensing: strong, weak and micro" - Schneider, Kochaneck & Wambsganss


Metodi didattici

The course will have a combination of lectures and practical computer projects.

Modalità di verifica e valutazione dell'apprendimento

Oral exam

Strumenti a supporto della didattica

Blackboard

Slides

Python Notebooks

Orario di ricevimento

Consulta il sito web di Robert Benton Metcalf