Search Results - "de Laurentis, Mariafelicia"

How to tell an accreting boson star from a black hole by Olivares, Hector, Younsi, Ziri, Fromm, Christian M, De Laurentis, Mariafelicia, Porth, Oliver, Mizuno, Yosuke, Falcke, Heino, Kramer, Michael, Rezzolla, Luciano

“…The capability of the Event Horizon Telescope (EHT) to image the nearest supermassive black hole candidates at horizon-scale resolutions offers a novel means…”
Get full text

Reconstructing wormhole solutions in curvature based Extended Theories of Gravity by De Falco, Vittorio, Battista, Emmanuele, Capozziello, Salvatore, De Laurentis, Mariafelicia

“…Static and spherically symmetric wormhole solutions can be reconstructed in the framework of curvature based Extended Theories of Gravity. In particular,…”
Get full text

Orbital precession of the S2 star in Scalar–Tensor–Vector Gravity by Della Monica, Riccardo, de Martino, Ivan, de Laurentis, Mariafelicia

“…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…”
Get full text

Jeans analysis in energy–momentum-squared gravity by Kazemi, Ali, Roshan, Mahmood, De Martino, Ivan, De Laurentis, Mariafelicia

“…In this paper, we study the Jeans analysis in the context of energy–momentum-squared gravity (EMSG). More specifically we find the new Jeans mass for…”
Get full text

Cosmographic Constraints and Cosmic Fluids by Capozziello, Salvatore, De Laurentis, Mariafelicia, Luongo, Orlando, Ruggeri, Alan

“…The problem of reproducing dark energy effects is reviewed here with particular interest devoted to cosmography. We summarize some of the most relevant…”
Get full text

Noether's stars in f(R) gravity by De Laurentis, Mariafelicia

“…The Noether Symmetry Approach can be used to construct spherically symmetric solutions in f(R) gravity. Specifically, the Noether conserved quantity is related…”
Get full text

The Accurate Mass Distribution of M87, the Giant Galaxy with Imaged Shadow of Its Supermassive Black Hole, as a Portal to New Physics by De Laurentis, Mariafelicia, Salucci, Paolo

“…The very careful Event Horizon Telescope estimate of the mass of the supermassive black hole at the center of the giant cD galaxy M87, allied with recent…”
Get full text

Response to: Comment on ‘Orbital precession of the S2 star in scalar–tensor–vector gravity’ by Della Monica, Riccardo, de Martino, Ivan, de Laurentis, Mariafelicia

“…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…”
Get full text

On the universality of MOG weak field approximation at galaxy cluster scale by De Martino, Ivan, De Laurentis, Mariafelicia

“…In its weak field limit, Scalar-tensor-vector gravity theory introduces a Yukawa-correction to the gravitational potential. Such a correction depends on the…”
Get full text

The current ability to test theories of gravity with black hole shadows by Mizuno, Yosuke, Younsi, Ziri, Fromm, Christian M., Porth, Oliver, De Laurentis, Mariafelicia, Olivares, Hector, Falcke, Heino, Kramer, Michael, Rezzolla, Luciano

“…Our Galactic Centre, Sagittarius A*, is believed to harbour a supermassive black hole, as suggested by observations tracking individual orbiting stars 1 , 2 …”
Get full text

Modified gravity revealed along geodesic tracks by De Laurentis, Mariafelicia, De Martino, Ivan, Lazkoz, Ruth

“…The study of the dynamics of a two-body system in modified gravity constitutes a more complex problem than in Newtonian gravity. Numerical methods are…”
Get full text

Testing space–time geometries and theories of gravity at the Galactic centre with pulsar’s time delay by Della Monica, Riccardo, De Martino, Ivan, De Laurentis, Mariafelicia

“…ABSTRACT We developed a numerical methodology to compute the fully relativistic propagation time of photons emitted by a pulsar in orbit around a massive…”
Get full text

Verification of f(R)-gravity in binary pulsars by Dyadina, Polina, Alexeyev, Stanislav, Capozziello, Salvatore, De Laurentis, Mariafelicia

“…We develop the parameterized post-Keplerian approach for class of analytic f (R)-gravity models. Using the double binary pulsar system PSR J0737-3039 data we…”
Get full text

Testing f (R) theories using the first time derivative of the orbital period of the binary pulsars by De Laurentis, Mariafelicia, De Martino, Ivan

“…In this paper, we use one of the post-Keplerian parameters to obtain constraints on f (R) theories of gravity. Using the Minkowskian limit, we compute the…”
Get full text

Quadrupolar gravitational radiation as a test-bed for f( R)-gravity by Laurentis, Mariafelicia De, Capozziello, Salvatore

“…► We consider quadrupolar gravitational emission for extended theories of gravity. ► In particular, we take into account f( R)-theories where R is the Ricci…”
Get full text

On the Parameters of the Spherically Symmetric Parameterized Rezzolla–Zhidenko Spacetime through Solar System Tests, the Orbit of the S2 Star about Sgr A, and Quasiperiodic Oscillations by Shaymatov, Sanjar, Ahmedov, Bobomurat, De Laurentis, Mariafelicia, Jamil, Mubasher, Wu, Qiang, Wang, Anzhong, Azreg-Aïnou, Mustapha

“…In this paper, we find the higher-order expansion parameters α and λ of spherically symmetric parameterized Rezzolla–Zhidenko (PRZ) spacetime by using its…”
Get full text

Constraining ƒ(R) Gravity by the Large-Scale Structure by de Martino, Ivan, De Laurentis, Mariafelicia, Capozziello, Salvatore

“…Over the past few decades, general relativity and the concordance ΛCDM model have been successfully tested using several different astrophysical and…”
Get full text

Constraining MOdified Gravity with the S2 Star by Della Monica, Riccardo, de Martino, Ivan, de Laurentis, Mariafelicia

“…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…”
Get full text

Deriving the mass of particles from Extended Theories of Gravity in LHC era by Capozziello, Salvatore, Basini, Giuseppe, De Laurentis, Mariafelicia

“…We derive a geometrical approach to produce the mass of particles that could be suitably tested at LHC. Starting from a 5D unification scheme, we show that all…”
Get full text

Massive, massless and ghost modes of gravitational waves from higher-order gravity by Bogdanos, Charalampos, Capozziello, Salvatore, Laurentis, Mariafelicia De, Nesseris, Savvas

“…We linearize the field equations for higher order theories that contain scalar invariants other than the Ricci scalar. We find that besides a massless spin-2…”
Get full text