Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Matsakos, Titos"'
Autor:
Matsakos, Titos, Nield, Stuart
Publikováno v:
Quantum 8, 1306 (2024)
Monte Carlo (MC) simulations are widely used in financial risk management, from estimating value-at-risk (VaR) to pricing over-the-counter derivatives. However, they come at a significant computational cost due to the number of scenarios required for
Externí odkaz:
http://arxiv.org/abs/2303.09682
Publikováno v:
A&A 674, A209 (2023)
We propose a covariant formulation of refracted gravity (RG), a classical theory of gravity based on the introduction of gravitational permittivity (GP), a monotonic function of the local mass density, in the standard Poisson equation. GP mimics dark
Externí odkaz:
http://arxiv.org/abs/2109.11217
Publikováno v:
A&A 657, A133 (2022)
We tested whether refracted gravity, a theory of modified gravity that describes the dynamics of galaxies without the aid of dark matter, can model the dynamics of the three massive elliptical galaxies, NGC 1407, NGC 4486, and NGC 5846, out to $\sim$
Externí odkaz:
http://arxiv.org/abs/2102.12499
Publikováno v:
A&A 637, A70 (2020)
We test if Refracted Gravity (RG) can describe the dynamics of disk galaxies without resorting to dark matter. RG is a classical theory of gravity where the standard Poisson equation is modified by the gravitational permittivity, $\epsilon$, a univer
Externí odkaz:
http://arxiv.org/abs/2003.07377
A distinct population of planetary systems that contain dynamically isolated, Earth-size planets with orbital periods $P_\mathrm{orb}\sim 1\,$day was recently identified in an analysis of data from the Kepler planet candidate catalog. We argue that t
Externí odkaz:
http://arxiv.org/abs/1708.08159
In the high-eccentricity migration (HEM) scenario, close-in planets reach the vicinity of the central star on high-eccentricity orbits that become circularized---with a concomitant decrease in the semimajor axis---through a tidal interaction with the
Externí odkaz:
http://arxiv.org/abs/1708.07543
Autor:
Matsakos, Titos, Königl, Arieh
Many of the observed spin--orbit alignment properties of exoplanets can be explained in the context of the primordial disk misalignment model, in which an initially aligned protoplanetary disk is torqued by a distant stellar companion on a misaligned
Externí odkaz:
http://arxiv.org/abs/1612.01985
The recent advent of spatially resolved mm- and cm-wavelength polarimetry in protostellar accretion discs could help clarify the role of magnetic fields in the angular momentum transport in these systems. The best case to date is that of HL~Tau, wher
Externí odkaz:
http://arxiv.org/abs/1608.06960
Autor:
Matsakos, Titos, Diaferio, Antonaldo
We investigate the proof of concept and the implications of \textit{refracted gravity}, a novel modified gravity aimed to solve the discrepancy between the luminous and the dynamical mass of cosmic structures without resorting to dark matter. Inspire
Externí odkaz:
http://arxiv.org/abs/1603.04943
Autor:
Matsakos, Titos, Königl, Arieh
Transit and radial velocity observations indicate a dearth of sub-Jupiter--mass planets on short-period orbits, outlined roughly by two oppositely sloped lines in the period--mass plane. We interpret this feature in terms of high-eccentricity migrati
Externí odkaz:
http://arxiv.org/abs/1603.00414