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Listar por autor "Amaro Seoane, Pau"

Mostrando ítems 1-10 de 10

Curvature conditions for spatial isotropy

Tzanavaris, Kostas; Amaro-Seoane, Pau (Elsevier, 2022-08)

[EN] In the context of mathematical cosmology, the study of necessary and sufficient conditions for a semi-Riemannian manifold to be a (generalized) Robertson-Walker space-time is important. In particular, it is a requirement ...
Modeling Dense Star Clusters in the Milky Way and beyond with the Cluster Monte Carlo Code

Rodriguez, Carl L.; Weatherford, Newlin C.; Coughlin, Scott C.; Amaro-Seoane, Pau; Breivik, Katelyn; Chatterjee, Sourav; Fragione, Giacomo; Kiroglu, Fulya; Kremer, Kyle; Rui, Nicholas Z.; Ye, Claire S.; Zevin, Michael; Rasio, Frederic A. (American Astronomical Society, 2022-02-01)

[EN] We describe the public release of the Cluster Monte Carlo (CMC) code, a parallel, star-by-star N-body code for modeling dense star clusters. CMC treats collisional stellar dynamics using Henon's method, where the ...
Polarimetry and astrometry of NIR flares as event horizon scale, dynamical probes for the mass of Sgr A*

Abuter, R.; Aimar, N.; Amaro-Seoane, Pau; Amorim, A.; Bauböck, M.; Berger, J.P.; Bonnet, H.; Bourdarot, G.; Brandner, W.; Cardoso, V.; Clenet, Y.; Davies, R.; de Zeeuw, P.T.; Dexter, J.; Drescher, A (EDP Sciences, 2023-09-06)

[EN] We present new astrometric and polarimetric observations of flares from Sgr A* obtained with GRAVITY, the near-infrared interferometer at ESO's Very Large Telescope Interferometer (VLTI), bringing the total sample of ...
Revised event rates for extreme and extremely large mass-ratio inspirals

Vázquez-Aceves, Verónica; Zwick, Lorenz; Bortolas, Elisa; Capelo, Pedro R.; Amaro-Seoane, Pau; Mayer, Lucio; Chen, Xian (Oxford University Press, 2022-02)

[EN] One of the main targets of the Laser Interferometer Space Antenna (LISA) is the detection of extreme mass-ratio inspirals (EMRIs) and extremely large mass-ratio inspirals (X-MRIs). Their orbits are expected to be ...
The effect of mission duration on LISA science objectives

Amaro-Seoane, Pau; Arca Sedda, Manuel; Babak, Stanislav; Berry, Christopher P. L.; Berti, Emanuele; Bertone, Gianfranco; Blas, Diego; Bogdanovic, Tamara; Bonetti, Matteo; Breivik, Katelyn; Brito, Richard; Caldwell, Robert; Capelo, Pedro R.; Caprini, Chiara; Cardoso, Vitor (Springer-Verlag, 2022-01)

[EN] The science objectives of the LISA mission have been defined under the implicit assumption of a 4-years continuous data stream. Based on the performance of LISA Pathfinder, it is now expected that LISA will have a ...
The Young Stars in the Galactic Center

von Fellenberg, Sebastiano D.; Gillessen, Stefan; Stadler, Julia; Bauböck, Michi; Genzel, Reinhard; de Zeeuw, Tim; Pfuhl, Oliver; Amaro-Seoane, Pau; Drescher, Antonia; Eisenhauer, Frank; Habibi, Maryam; Ott, Thomas; Widmann, Felix; Young, Alice (American Astronomical Society, 2022-06-01)

[EN] We present a large similar to 30 '' x 30 '' spectroscopic survey of the Galactic Center using the SINFONI IFU at the VLT. Combining observations of the last two decades we compile spectra of over 2800 stars. Using the ...
Transient Stellar Collisions as Multimessenger Probes: Nonthermal, Gravitational-wave Emission and the Cosmic Ladder Argument

Amaro-Seoane, Pau (American Astronomical Society, 2023-04-01)

[EN] In dense stellar clusters like galactic nuclei and globular clusters, stellar densities are so high that stars might physically collide with each other. In galactic nuclei the energy and power output can be close to, ...
Underluminous tidal disruption events

Amaro-Seoane, Pau (Oxford University Press, 2024-08-21)

[EN] We have evidence of X-ray flares in several galaxies consistent with a a star being tidally disrupted by a supermassive black hole (MBH). If the star starts on a nearly parabolic orbit relative to the MBH, one can ...
Using the motion of S2 to constrain vector clouds around Sgr A

Foschi, A.; Abuter, R.; Abd El Dayem, K.; Aimar, R.; Amaro-Seoane, Pau; Amorim, A.; Berger, J.P.; Bonnet, H.; Bourdarot, G.; Brandner, W.; Davies, R.; de Zeeuw, P. T.; Defrére, D.; Dexter, J.; Drescher, A. (Oxford University Press, 2024-05-06)

[EN] The dark compact object at the centre of the Milky Way is well established to be a supermassive black hole with mass M-center dot similar to 4.3 x 10(6) M-circle dot, but the nature of its environment is still under ...
Where intermediate-mass black holes could hide in the Galactic Centre. A full parameter study with the S2 orbit

Straub, O.; Bauböck, M.; Abuter, R.; Aimar, N.; Amaro-Seoane, Pau; Amorim, A.; Berger, J.P.; Bonnet, H.; Bourdarot, G.; Brandner, W.; Cardoso, V.; Clenet, Y.; Dallilar, Y.; Davies, R.; de Zeeuw, P.T. (EDP Sciences, 2023-03-31)

[EN] Context. In the Milky Way the central massive black hole, Sgr A*, coexists with a compact nuclear star cluster that contains a sub-parsec concentration of fast-moving young stars called S-stars. Their location and age ...