Organizzazione della Didattica


Multimessenger astrophysics


Physics of the Universe


Frontali Esercizi Laboratorio Studio Individuale
ORE: 48 0 0 85


II anno1 semestre






Calendario Attività Didattiche



caratterizzanteAstrofisico, geofisico e spazialeFIS/056

Responsabile Insegnamento

Prof.ssa BERNARDINI ELISAFIS/01Dipartimento di Fisica e Astronomia "Galileo Galilei"

Altri Docenti

Non previsti

Attività di Supporto alla Didattica

Non previste


Il corso è indirizzato a studenti con basi di fisica delle particelle elementari e fisica nucleare.

This course is an introduction to “multi-messenger” astrophysics, from a mostly experimental perspective. It covers different aspects connecting particle physics with astrophysics and cosmology. Numerous experimental findings recently obtained through the study of high-energy particles will be illustrated. Topics include: * the dark Universe * particle interactions in matter * cosmic rays and their interactions * cosmic rays measurements * particles and radiation in the cosmos * Dark Matter * neutrino masses and oscillations.

Frontal lectures and exercises.

The term "multi-messenger" is quite new and increasingly used in astronomy and astroparticle physics. It refers to the combination of various techniques at different photon wavelengths and with different 'messengers', to get a deep understanding of the astrophysical objects we observe in the sky. Visible light only reveals a very small portion of the mysteries of the Universe. Astronomical observations are nowadays routinely performed with different telescopes across the electromagnetic spectrum, from radio waves through visible light, all the way to gamma-rays. At the highest energies, the most violent processes in the Universe are at work. Whatever produces high energy gamma-rays, is expected to accelerate particles to energies that exceed the capabilities of man-made accelerators a billion times. Such particles can reach the Earth as cosmic rays, first discovered more than 10 years ago, still nowadays one of the most misterious "messages" from our Universe. Cosmic rays may interact in the vicinity or their sources or even along their way to Earth, to produce elusive particles called neutrinos. Neutrinos are extremely difficult to detect, but the year 2013 has seen the first clear observation of neutrinos from distant astrophysical objects by the IceCube detector at the South Pole, opening a new observational window to the Universe. Finally, most known sources of gamma-rays (and likely cosmic-rays and neutrinos) are associated with black holes or neutron stars. Whenver two such compact objects orbit around each other they are expected to produce gravitational waves. Most recently, in 2015, gravitational waves were first onserved by the LIGO detectors in the USA from the merger of two black holes. The Nobel-prize winning direct detection of gravitational waves opened another window through which astronomers can observe the violent Universe.

Oral examination.

Bergstrom, Lars; Goobar, Ariel, Cosmology and particle astrophysicsLars Bergstrom, Ariel Goobar. Berlin [etc.]: Springer, 2004 Grupen, Claus; Eidelman, Simon; Cowan, Glen; Stroh, Tilo, Astroparticle physicsClaus Grupenwith contributions from Glen Cowan, Simon Eidelman and Tito Stroh. Berlin: Springer, De_Angelis, Alessandro; Pimenta, Mário João Martins, Introduction to particle and astroparticle physics Multimessenger Astronomy and its Particle Physics Foundations. Milan [etc.]: Springer, 2018 Perkins, Donald H., Particle astrophysicsD.H. Perkins. Oxford: Oxford University Press, 2009 Aharonian, Felix; Dermer, Charles D., Astrophysics at very high energiesFelix Aharonian, Lars Bergstrom, Charles Dermer. Heidelberg [etc.]: Springer, Spurio, Maurizio, Particles and astrophysicsa multi-messenger approachMaurizio Spurio. Cham [etc.]: Springer, 2015