Zobrazeno 1 - 10
of 174
pro vyhledávání: '"Casetti, Lapo"'
All but the most massive main-sequence stars are expected to have a rarefied and hot (million-Kelvin) corona like the Sun. How such a hot corona is formed and supported has not been completely understood yet, even in the case of the Sun. Recently, Ba
Externí odkaz:
http://arxiv.org/abs/2411.07868
Autor:
Barbieri, Luca, Papini, Emanuele, Di Cintio, Pierfrancesco, Landi, Simone, Verdini, Andrea, Casetti, Lapo
Prompted by the relevant problem of temperature inversion (i.e. gradient of density anti-correlated to the gradient of temperature) in astrophysics, we introduce a novel method to model a gravitationally confined multi-component collisionless plasma
Externí odkaz:
http://arxiv.org/abs/2401.10713
Publikováno v:
Astronomy & Astrophysics 681, L5 (2024)
The temperature of the solar atmosphere increases from thousands to millions of degrees moving from the lower layer (chromosphere) to the outermost one (corona), while the density drops accordingly. The mechanism behind this phenomenon, known as a te
Externí odkaz:
http://arxiv.org/abs/2309.15772
For the first time, an Italian University has the possibility to perform a multi-year observing campaign at a world-class telescope. This hands-on experience had a significant impact on the students' university path: from learning specific observing
Externí odkaz:
http://arxiv.org/abs/2210.13360
Autor:
Tozzi, Giulia, Lusso, Elisabeta, Casetti, Lapo, Romoli, Marco, Andreuzzi, Gloria, A., Isabel Montoya, Nardini, Emanuele, Cresci, Giovanni, Middei, Riccardo, Bertolini, Silvia, Calabretto, Paolo, Cammelli, Vieri, Cuadra, Francisco, Ragione, Marco Dalla, Marconcini, Cosimo, Miceli, Adriano, Mini, Irene, Palazzini, Martina, Rotellini, Giorgio, Saccardi, Andrea, Samà, Lavinia, Sangalli, Mattia, Serafini, Lorenzo, Spaccino, Fabio
Publikováno v:
A&A 667, L12 (2022)
We report on the changing-look nature of the active galactic nucleus (AGN) in the galaxy NGC 4156, as serendipitously discovered thanks to data acquired in 2019 at the Telescopio Nazionale Galileo (TNG) during a students' observing programme. Previou
Externí odkaz:
http://arxiv.org/abs/2210.09341
Autor:
Campa, Alessandro, Casetti, Lapo, Di Cintio, Pierfrancesco, Latella, Ivan, Rubi, J. Miguel, Ruffo, Stefano
Publikováno v:
J. Stat. Mech. (2022) 103202
Long-range interacting systems may exhibit ensemble inequivalence and can possibly attain equilibrium states under completely open conditions, for which energy, volume and number of particles simultaneously fluctuate. Here we consider a modified vers
Externí odkaz:
http://arxiv.org/abs/2206.04527
Autor:
Casetti, Lapo
Albert Einstein abruptly rose to worldwide fame in November 1919, after Arthur Eddington announced the successful measurement of the gravitational light bending predicted by Einstein’s general theory of relativity. The measurement had been performe
Externí odkaz:
https://library.oapen.org/handle/20.500.12657/56572
This miscellaneous volume aims to commemorate the Iberian and European celebrations about Magellan that started in 2019. Specifically, the volume commemorates: the person and the image of Magellan on earth (celebrating the 500 years of his circumnavi
Externí odkaz:
https://library.oapen.org/handle/20.500.12657/56562
Autor:
Barbieri, Luca, Di Cintio, Pierfrancesco, Giachetti, Guido, Simon-Petit, Alicia, Casetti, Lapo
We investigate the evolution of the phase-space distribution function around slightly perturbed stationary states and the process of violent relaxation in the context of the dissipationless collapse of an isolated spherical self-gravitating system. B
Externí odkaz:
http://arxiv.org/abs/2112.10709
By means of numerical simulations we study the radial-orbit instability in anisotropic self-gravitating $N-$body systems under the effect of noise. We find that the presence of additive or multiplicative noise has a different effect on the onset of t
Externí odkaz:
http://arxiv.org/abs/2110.11026