Search Results - "Della Monica, Riccardo"
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Orbital precession of the S2 star in Scalar–Tensor–Vector Gravity
Published in Monthly notices of the Royal Astronomical Society (01-03-2022)“…ABSTRACT We have obtained the first constraint of the parameter space of Scalar–Tensor–Vector Gravity using the motion of the S2-star around the supermassive…”
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Constraining MOdified Gravity with the S2 Star
Published in Universe (Basel) (01-02-2022)“…We have used publicly available kinematic data for the S2 star to constrain the parameter space of MOdified Gravity. Integrating geodesics and using a Markov…”
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Explaining the oblate morphology of dwarf spheroidals with wave dark matter perturbations
Published in Monthly notices of the Royal Astronomical Society (09-10-2024)“…We investigate whether the oblate, spheroidal morphology of common dwarf spheroidal galaxies (dSph) may result from the slow relaxation of stellar orbits…”
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Response to: Comment on ‘Orbital precession of the S2 star in scalar–tensor–vector gravity’
Published in Monthly notices of the Royal Astronomical Society (02-03-2023)“…ABSTRACT The explicit derivation for the orbital precession of the S2 star in the Galactic Centre in the scalar–tensor–vector gravity is discussed and compared…”
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Testing space–time geometries and theories of gravity at the Galactic centre with pulsar’s time delay
Published in Monthly notices of the Royal Astronomical Society (24-07-2023)“…ABSTRACT We developed a numerical methodology to compute the fully relativistic propagation time of photons emitted by a pulsar in orbit around a massive…”
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Bounding the mass of ultralight bosonic Dark Matter particles with the motion of the S2 star around Sgr A
Published 20-10-2023“…Phys. Rev. D 108, L101303 (2023) Dark matter is undoubtedly one of the fundamental, albeit unknown, components of the standard cosmological model. The failure…”
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Narrowing the allowed mass range of ultralight bosons with the S2 star
Published 16-01-2023“…A&A 670, L4 (2023) It is well known that N-body simulations of ultralight bosons show the formation of a solitonic dark matter core in the innermost part of…”
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Unveiling the nature of SgrA with the geodesic motion of S-stars
Published 17-01-2022“…Despite the huge improvements guaranteed by future GRAVITY observations of the S0-2 star, these will not be able to unveil the fundamental nature, whether…”
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Testing space-time geometries and theories of gravity at the Galactic Center with pulsar's time delay
Published 13-07-2023“…We developed a numerical methodology to compute the fully-relativistic propagation time of photons emitted by a pulsar in orbit around a massive compact…”
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The Galactic Center as a laboratory for theories of gravity and dark matter
Published 26-05-2023“…Rep. Prog. Phys. 86 104901 (2023) The Galactic Center of the Milky Way, thanks to its proximity, allows to perform astronomical observations that investigate…”
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Response to: Comment on "Orbital precession of the S2 star in scalar-tensor-vector gravity"
Published 23-02-2023“…The explicit derivation for the orbital precession of the S2 star in the Galactic Center in the Scalar-Tensor-Vector Gravity is discussed and compared with…”
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Constraining MOdified Gravity with the S2 Star
Published 25-06-2022“…Universe 2022, 8(2) We have used publicly available kinematic data for the S2 star to constrain the parameter space of MOdified Gravity. Integrating geodesics…”
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Testing Horndeski gravity with S2 star orbit
Published 09-12-2022“…Monthly Notices of the Royal Astronomical Society, Volume 519, Issue 2, pp.1981-1988 We have explored a completely new and alternative way to restrict the…”
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14
Orbital precession of the S2 star in Scalar-Tensor-Vector-Gravity
Published 26-05-2021“…We have obtained the first constraint of the parameter space of Scalar-Tensor-Vector-Gravity using the motion of the S2-star around the supermassive black hole…”
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15
Measuring the boson mass of fuzzy dark matter with stellar proper motions
Published 24-10-2024“…Fuzzy Dark Matter (FDM) is among the most suitable candidates to replace WIMPs and to resolve the puzzling mystery of dark matter. A galactic dark matter halo…”
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Constraints on metric-affine gravity black holes from the stellar motion at the Galactic Center
Published 14-11-2023“…We consider a static, spherically symmetric space-time with an electric field arising from a quadratic metric-affine extension of General Relativity. Such a…”
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17
Explaining the oblate morphology of dwarf spheroidals with Wave Dark Matter perturbations
Published 28-08-2023“…We investigate whether the oblate, spheroidal morphology of common dwarf spheroidal galaxies (dSph) may result from the slow relaxation of stellar orbits…”
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18
Constraining an Einstein-Maxwell-dilaton-axion black hole at the Galactic Center with the orbit of the S2 star
Published 12-06-2023“…We derive new constraints on the dilaton parameter appearing in the spherically-symmetric black hole solution of Einstein-Maxwell-dilaton-axion gravity, by…”
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Future prospects for measuring 1PPN parameters using observations of S2 and S62 at the Galactic Center
Published 30-10-2024“…The Parameterized Post-Newtonian (PPN) formalism offers an agnostic framework for evaluating theories of gravity that extend beyond General Relativity…”
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f(R)$-gravity after the detection of the orbital precession of the S2 star around the Galactic centre massive black hole
Published 12-06-2021“…Physical Review D, 104, L101502 (2021) The GRAVITY Collaboration achieved the remarkable detection of the orbital precession of the S2 star around the Galactic…”
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