69051 - Clusters of Galaxies

Academic Year 2021/2022

  • Teaching Mode: Traditional lectures
  • Campus: Bologna
  • Corso: Second cycle degree programme (LM) in Astrophysics and cosmology (cod. 8018)

    Also valid for Second cycle degree programme (LM) in Astrophysics and Cosmology (cod. 5828)

Course contents

Physical components of Galaxy Clusters: dark matter, intracluster gas, galaxies, relativistic particles and magnetic field.

Intracluster medium: basics of plasma physics. Equilibrium configurations of the gas. Thermal and dynamical evolution of the gas: theory of cooling flow. Cooling flow problems. AGN feedback. Chemical enrichment of the intracluster medium. Use of clusters in Cosmology.

Galaxies: morphology-density relation. Dynamical interactions between galaxies: mergings and harassment. Interaction between galaxies and the intracluster medium: ram pressure stripping and evaporation. Formation of the central galaxy: dynamical friction.

Magnetic field and relativistic particles: synchrotron emission. Compton effect. Diffuse radio emission: halos, mini-halos and relics. Equipartition. Methods to estimate the magnetic field intensity. Radio emission from X-ray cavities.

Readings/Bibliography

SLides of the lectures + scientific papers (quoted in the slides).

Specific chapters of several books, quoted during the lectures.

Teaching methods

Lectures and discussion on the theory and observations, using both slides and blackboard.

Assessment methods

Oral exam. The first part of the exam is a discussion on a subject chosen by the student. The second part concerns discussions and questions on other topics covered in the class.

Teaching tools

Slides and blackboard.

Office hours

See the website of Fabrizio Brighenti