Personal tools
Log in
You are here: Home Research Activities Galaxies and Cosmology The dark universe

Dark matter

Dark matter represents one of the principal ingredients of the standard model, and its existence is demonstrated by a great number of astronomical observations. Amongst these we recall the rotation curves of spiral galaxies and the masses of galaxy clusters, along with the already mentioned fluctuations of the cosmic microwave background and the large scale distribution of galaxies. It appears clear from these observations that besides a small fraction of "unilluminated" conventional matter, 90% of dark matter must be in the form of massive elementary particles that interact with eachother (and ordinary matter) only via the force of gravity. What these particles might be remains one of the great mysteries of the cosmological model, strictly correlated with problems of fundamental physics and so to the research of the infinitely small. Research aimed at identifying the dark matter particles are both direct and indirect in nature, depending on whether they make use of an interaction with the atoms of a detector, or rely on the secondary particles expected as the result of particle annihilation. This research is mainly the prerogative of particle physics, with complimentary information provided by astronomical observations in the X-ray, optical and millimetric bands.

A farewell to BepiColombo after the flyby with the Earth

Apr 17, 2020

A farewell to BepiColombo after the flyby with the Earth The picture was taken by Liverpool Telescope on the Canary Island of La Palma when the spacecraft was more than 2 million kilometres far from our planet

Unexpected magnetic channels in a distant galaxy

Apr 08, 2020

Unexpected magnetic channels in a distant galaxy An international team of astronomers has uncovered unusual structures and a probable magnetic connection between the two lobes of the radio galaxy ESO 137-006 using the MeerKAT telescope, a precursor to the Square Kilometre Array (SKA). The study, led by Mpati Ramatsoku, was published in the Astronomy and Astrophysics journal

We’re all astronauts on a public health mission: Ten tips for completing the quarantine successfully

Mar 27, 2020

We’re all astronauts on a public health mission: Ten tips for completing the quarantine successfully Debora Penco, Occupational psychologist, workplace health and safety expert, deals with the theme of our life in the times of quarantine and others ideas and suggestions to manage problems and tensions connected to it.