LXVII Congresso Annuale della Società Astronomica Italiana

Sessione

Cosmologia

5 mag 2026, 15:00

L'Aquila

175. Precision measurements of the cosmic microwave background: extreme physics and cosmology

Prof. de Bernardis, Paolo (Dipartimento di Fisica, Sapienza Università di Roma)

05/05/26, 15:00

The Cosmic Microwave Background (CMB) is our most profound window into the primordial universe. While temperature maps established the $\Lambda$CDM model, the next frontier lies in polarization and spectral distortions. These signals provide a high-precision laboratory for "extreme physics" at energy scales far beyond Earth-bound accelerators. Searching for primordial B-modes offers a direct...

147. Testing the Cosmological Model in the Next Decade: Gravitational Waves, Large-Scale Structure, and the CMB

Dr. Carbone, Carmelita (INAF IASF-MI)

05/05/26, 15:25

The coming decade will be decisive for Cosmology because, for the first time, several largely independent probes of the Universe will become simultaneously mature. On the large-scale-structure side, DESI is already delivering high-precision BAO constraints, while Euclid, Rubin/LSST and Roman will map the expansion history and the growth of structure with unprecedented reach. On the CMB side,...

187. Generation of gravitational waves in warm inflation via Bogoliubov coefficients

Mengoni, Tommaso (Istituto Nazionale di Astrofisica (INAF), University of Camerino)

05/05/26, 15:45

We investigate the gravitational-wave background predicted by a two-scalar-field cosmological model that aims to unify primordial inflation with the dark sector, namely late-time dark energy and dark matter, in a single and self-consistent theoretical framework. In this context, we derive the gravitational-wave energy spectrum over wavelengths ranging from today’s Hubble horizon to those at...

129. The EXPANSION CENTER of the UNIVERSE as a NEW SCIENTIFIC PARADIGM for a REVOLUTION IN COSMOLOGY

Lorenzi, Luciano (SAIt & SIF)

05/05/26, 15:58

According to Thomas Kuhn (1962), the recognition of the Expansion Center of the Universe has to be considered as a new scientific PARADIGM for a revolution in Cosmology (Lorenzi 2009, p.5). Indeed, the discovery by Bahcall & Soneira (1982) of a Huge Void of Rich Clusters didn’t recognize its Center 𝑽𝑪(𝜶 ≈ 𝟗𝒉, 𝜹 ≈ +𝟑𝟎°) as the Cosmic Expansion Cente, but the Expansion Center Model (ECM: Lorenzi...