Zobrazeno 1 - 10
of 198
pro vyhledávání: '"Celora, A"'
Nonlinear simulations of neutron star mergers are complicated by the need to represent turbulent dynamics. As we cannot (yet) perform simulations that resolve accurately both the gravitational-wave scale and the smallest scales at which magneto/hydro
Externí odkaz:
http://arxiv.org/abs/2407.18012
We present a proof-of-principle implementation of the first fully covariant filtering scheme applied to relativistic fluid turbulence. The filtering is performed with respect to special observers, identified dynamically as moving with the "bulk of th
Externí odkaz:
http://arxiv.org/abs/2405.13593
Autor:
S. Cancelli, F. Caruggi, E. Perelli Cippo, O. Putignano, A. Celora, G. Gorini, M. Krzystyniak, A. Muraro, G. Romanelli, R. S. Pinna, M. Tardocchi, G. Croci
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-9 (2024)
Abstract Neutron detection is nowadays mostly based on 3He gas detectors, but its shortage and the continuous upgrades of the neutron facilities require new devices to perform experiments with maximum performances. This work presents a new detector b
Externí odkaz:
https://doaj.org/article/211bb7ded99d499ea2b75fc37cbb450e
Autor:
Celora, Thomas
This work is concerned with advancing multi-fluid models in General Relativity, and in particular focuses on the modelling of dissipative fluids and turbulent flows. Such models are required for an accurate description of neutron star phenomenology,
Externí odkaz:
http://arxiv.org/abs/2307.06042
We study phase equilibria in a minimal model of charge-regulated polymer solutions. Our model consists of a single polymer species whose charge state arises from protonation-deprotonation processes in the presence of a dissolved acid, whose anions se
Externí odkaz:
http://arxiv.org/abs/2307.03706
Publikováno v:
MNRAS 527, 2, 2437 (2024)
The magneto-rotational instability (MRI) - which is due to an interplay between a sheared background and the magnetic field - is commonly considered a key ingredient for developing and sustaining turbulence in the outer envelope of binary neutron sta
Externí odkaz:
http://arxiv.org/abs/2304.13486
Publikováno v:
Universe 9 (2023) 226
We re-visit the calculation of mode oscillations in the ocean of a rotating neutron star, which may be excited during thermonuclear X-ray bursts. Our present theoretical understanding of ocean modes relies heavily on the traditional approximation, co
Externí odkaz:
http://arxiv.org/abs/2304.05413
Autor:
Beri, Aru, Sharma, Rahul, Roy, Pinaki, Gaur, Vishal, Altamirano, Diego, Andersson, Nils, Gittins, Fabian, Celora, T.
We report results from a study of XTE J1739-285, a transient neutron star low mass X-ray binary observed with AstroSat and NuSTAR during its 2019-2020 outburst. We detected accretion-powered X-ray pulsations at 386 Hz during very short intervals (0.5
Externí odkaz:
http://arxiv.org/abs/2303.13085
Tumour spheroids have been the focus of a variety of mathematical models, ranging from Greenspan's classical study of the 1970s through to contemporary agent-based models. Of the many factors that regulate spheroid growth, mechanical effects are perh
Externí odkaz:
http://arxiv.org/abs/2206.13818
In order to extract the precise physical information encoded in the gravitational and electromagnetic signals from powerful neutron-star merger events, we need to include as much of the relevant physics as possible in our numerical simulations. This
Externí odkaz:
http://arxiv.org/abs/2202.01576