Institute of Theoretical Physics UAM-CSIC
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Predoctoral researcher at the UAM-CSIC Institute of Theoretical Physics and in the Department of Theoretical Physics at the Autonomous University of Madrid
Research professor at the Institute of Theoretical Physics (UAM-CSIC)
Professor and researcher in the Department of Theoretical Physics at the Autonomous University of Madrid and at the Institute of Theoretical Physics (IFT UAM-CSIC), scientific coordinator of the entire NASA Fermi-LAT Collaboration between 2023-2025 and coordinator of the ‘Dark Matter and New Physics’ working groups of the Fermi-LAT gamma-ray collaborations (2014-16 and 2020-2022) and CTAO (2018-2020) collaborations
A century ago, astronomer Fritz Zwicky observed that galaxies were moving faster than their mass should allow, leading him to infer the presence of an invisible structure, dark matter. Since the particles that make up dark matter do not interact with electromagnetic force, they cannot be observed directly, as they do not absorb, reflect, or emit light. Now, NASA's Fermi space telescope has found specific gamma rays in the center of the Milky Way that are consistent with the decay of theoretical dark matter particles, although they could also come from other sources. “If this is correct, to my knowledge, it would be the first time that humanity has ‘seen’ dark matter,” said study author Tomonori Totani in a press release. The article is published in the Journal of Cosmology and Astroparticle Physics.
The KATRIN (Karlsruhe Tritium Neutrino Experiment) team has published the most accurate measurement to date of the upper limit of the neutrino mass in the journal Science, establishing it at 0.45 electronvolts (eV), less than a millionth of the mass of an electron. The KATRIN experiment, launched in 2018 in Germany, will finalise its neutrino mass measurement campaign this year, having reached 1,000 days of data acquisition.
An international team of researchers has captured the first image of Sagittarius A*, the supermassive black hole at the centre of the Milky Way. The results are published today in a special issue of The Astrophysical Journal Letters.