Vagnozzi is known for his contributions at the interface of cosmology,particle physics,and astrophysics,with a primary focus on determining the fundamental nature of dark matter and dark energy. He has been awarded the Buchalter Cosmology Prize for his work on dark energy,[3] is the recipient of the 2023 SIGRAV Prize,[4] and has been included in the Clarivate Highly Cited Researchers list in 2025.[5] Additionally,he is an editor of the journal Physics of the Dark Universe.[6]
Vagnozzi has worked on a broad array of problems at the interface of cosmology and astroparticle physics. His work has contributed to investigating the nature of dark matter and dark energy,[17][18] testing cosmic inflation,[19][20] determining the shape of the universe,[21] understanding the origins of cosmic tensions (including the Hubble tension),[22][18] using black hole observations to test gravity and fundamental physics,[23] and searching for signatures of neutrino masses in cosmological observations.[24] Additionally,his research has identified new ways for detecting dark energy in experiments on Earth,[25] and has proposed new techniques for testing gravity and searching for fifth forces by analyzing asteroid trajectories.[26] As of 2025,his work has been cited more than 14,000 times,with an h-index of 61,according to Google Scholar.[2]
Vagnozzi,S.,Giusarma,E.,Mena,O.,Freese,K.,Gerbino,M.,Ho,S.,&Lattanzi,M. (2017). Unveiling νsecrets with cosmological data:Neutrino masses and mass hierarchy. Physical Review D,96(12),123503. https://doi.org/10.1103/PhysRevD.96.123503
Vagnozzi,S. (2020). Implications of the NANOGrav results for inflation. Monthly Notices of the Royal Astronomical Society Letters,502(1),L11–L15. https://doi.org/10.1093/mnrasl/slaa203
Vagnozzi,S.,Loeb,A.,&Moresco,M. (2021). Eppur èpiatto? The Cosmic Chronometers Take on Spatial Curvature and Cosmic Concordance. Astrophysical Journal,908(1),84. https://doi.org/10.3847/1538-4357/abd4df
Vagnozzi,S.,Visinelli,L.,Brax,P.,Davis,A.-C.,&Sakstein,J. (2021). Direct detection of dark energy:The XENON1T excess and future prospects. Physical Review D,104(6),063023. https://doi.org/10.1103/PhysRevD.104.063023
Vagnozzi,S.,&Loeb,A. (2022). The Challenge of Ruling Out Inflation via the Primordial Graviton Background. Astrophysical Journal Letters,939(2),L22. https://doi.org/10.3847/2041-8213/ac9b0e
Vagnozzi,S.,Roy,R.,Tsai,Y.-D.,Visinelli,L.,Afrin,M.,Allahyari,A.,Bambhaniya,P.,Dey,D.,Ghosh,S. G.,Joshi,P. S.,Jusufi,K.,Khodadi,M.,Walia,R. K.,Övgün,A.,&Bambi,C. (2023). Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A*. Classical and Quantum Gravity,40(16),165007. https://doi.org/10.1088/1361-6382/acd97b
Vagnozzi,S. (2023). Seven Hints That Early-Time New Physics Alone Is Not Sufficient to Solve the Hubble Tension. Universe,9(9),393. https://doi.org/10.3390/universe9090393
Tsai,Y.-D.,Farnocchia,D.,Micheli,M.,Vagnozzi,S.,&Visinelli,L. (2024). Constraints on fifth forces and ultralight dark matter from OSIRIS-REx target asteroid Bennu. Communications Physics,7(1),311. https://doi.org/10.1038/s42005-024-01779-3
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