On Wednesday, 10 November 2021, MDPI and the Journal Universe organized the 2^nd webinar on Universe, entitled "keV Warm Dark Matter in Agreement with Observations in Tribute to Héctor J. De Vega".

The introduction was held by the Chair of the webinar, Prof. Dr. Norma G. Sanchez. She is a research director at the French National Centre for Scientific Research, and the Chalonge - de Vega School. She conducts research in the physics of the universe, theoretical physics, gravitation, black holes, and their particle physics interplay. Her current projects are the new universe, the universe from large to small scales with inflation, general relativity, quantum field theory, the CMB, keV Warm Dark Matter, black holes, dark energy, and quantum physics at the Planckian and Transplanckian scales.

The first speaker to quick off this webinar was Prof. Norma G. Sanchez with her presentation "keV Warm Dark Matter in Agreement with Observations In Tribute to Hector de Vega".

She was followed by Dr. Luisberis Velazquez Abad with his presentation "New bounds for the mass of warm dark matter particles using results from fermionic King model". He received a PhD degree in physical sciences from the Higher Institute of Technologies and Applied Sciences of Havana in 2007. Since 2008, he has been working at the Department of Physics, Universidad Católica del Norte, Antofagasta, Chile, where he is a professor of physics.

The third presentation was held by Dr. Alberto Salvio and its title was "Axion-Sterile-Neutrino Dark Matter". After receiving a PhD from SISSA (Trieste) and holding research and teaching positions in various institutions in Switzerland, Spain, Italy and at CERN, Dr Alberto Salvio became a staff member of the physics department at the University of Rome Tor Vergata in October 2018.

He was followed by Mr. Massimiliano Romanello with his presentation "The Epoch of Reionization in Warm Dark Matter scenarios".

The last presentation was held by Prof. Paolo Salucci and the title of his presentation was "Fundamental properties of the dark and the luminous matter from the Low Surface Brightness discs". He is an associate professor of the physics of galaxies at SISSA and coordinator of the INFN NA12-TS initiative. His fields of research concern cosmology, extra galactic astrophysics and physics of gravitation.

Each presentation was followed by a Q&A and a discussion, moderated by the Chair Prof. Norma G. Sanchez. The webinar was offered via Zoom and required registration to attend. The full recording can be found here on Sciforum website. In order to stay updated on the next webinars on Universe be sure to sign up for our newsletter by clicking on “Subscribe” at the top of the page.