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pro vyhledávání: '"A Di Cintio"'
Recent numerical results seem to suggest that in certain regimes of typical particle velocities the gravitational $N-$body problem (for $3\leq N\lesssim 10^3$) is intrinsically less chaotic when the post-Newtonian (PN) force terms are included, with
Externí odkaz:
http://arxiv.org/abs/2410.15410
Autor:
Di Cintio, Pierfrancesco, Iorio, Giuliano, Calura, Francesco, Nipoti, Carlo, Cantari, Marcello
Publikováno v:
A&A 690, A61 (2024)
The Fornax dwarf spheroidal galaxy (dSph) represents a challenge for some globular cluster (GC) formation models, because an exceptionally high fraction of its stellar mass is locked in its GC system. In order to shed light on our understanding of GC
Externí odkaz:
http://arxiv.org/abs/2407.01714
Publikováno v:
A&A 689, A150 (2024)
Aims. We explore the dynamical friction on a test mass in gravitational systems in the Quasi linear formulation of Modified Newtonian Dynamics (QuMOND). Methods. Exploiting the quasi linearity of QuMOND we derive a simple expression for the dynamical
Externí odkaz:
http://arxiv.org/abs/2404.18733
Autor:
Kavanagh, Bradley J., Karydas, Theophanes K., Bertone, Gianfranco, Di Cintio, Pierfrancesco, Pasquato, Mario
Future gravitational wave observatories can probe dark matter by detecting the dephasing in the waveform of binary black hole mergers induced by dark matter overdensities. Such a detection hinges on the accurate modelling of the dynamical friction, i
Externí odkaz:
http://arxiv.org/abs/2402.13762
Publikováno v:
A&A 690, A286 (2024)
Aims. Recent observational studies suggest that feedback from active galactic nuclei (AGNs) may play an important role in the formation and evolution of low-mass dwarf galaxies, an issue that has received little attention from a theoretical perspecti
Externí odkaz:
http://arxiv.org/abs/2402.00929
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
Autor:
Di Cintio, Pierfrancesco
Context. Deur (2014) and Winters et al. (2023) proposed an empirical relation between the dark to total mass ratio and ellipticity in elliptical galaxies from their observed total dynamical mass-to-light ratio data M/L = (14.1 +/- 5.4){\epsilon}. In
Externí odkaz:
http://arxiv.org/abs/2310.12114
This work explores the mixing rate of metals in the interstellar medium (ISM), comparing observational constraints from our solar neighbourhood to high resolution cosmological hydrodynamical simulations of Milky Way (MW)-like galaxies. The mixing rat
Externí odkaz:
http://arxiv.org/abs/2308.01015
Autor:
Re, Federico, Di Cintio, Pierfrancesco
Publikováno v:
A&A 678, A110 (2023)
We investigate the core-cusp problem of the $\Lambda$ cold dark matter ($\Lambda$CDM) scenario in the context of Modified Newtonian Dynamics (MOND) paradigm exploiting the concept of equivalent Newtonian system (ENS). By means of particle-mesh $N-$bo
Externí odkaz:
http://arxiv.org/abs/2307.08865
An anti-correlation between the central density of the dark matter halo ($\rho_{150,\ {\rm DM}}$) and the pericentric distances ($r_{p}$) of the Milky Way's (MW's) dwarf spheroidal galaxies (dSphs) has been reported in the literature. The existence a
Externí odkaz:
http://arxiv.org/abs/2304.06611