Zobrazeno 1 - 10
of 55
pro vyhledávání: '"F J Sánchez-Salcedo"'
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 208 (2024)
We develop a theoretical framework and use 2D hydrodynamical simulations to study the repulsive effect between two close orbiters embedded in an accretion disk. We consider orbiters on fixed Keplerian orbits with masses low enough to open shallow gap
Externí odkaz:
https://doaj.org/article/c4efe0f0b1ec49e78f627eed22be6ae7
A planetary embryo embedded in a gaseous disc can grow by pebble accretion while subjected to a gravitational force from the disc that changes its orbital elements. Usually, that force is considered to arise from the Lindblad and corotation resonance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d72826fe690d34ad3ef54dd8543b911c
http://arxiv.org/abs/2305.09093
http://arxiv.org/abs/2305.09093
Autor:
F J Sánchez-Salcedo, V Lora
The dynamical friction timescale of massive globular clusters (GCs) in the inner regions of cuspy dark haloes in dwarf spheroidal (dSph) galaxies can be much shorter than the Hubble time. This implies that a small fraction of the GCs is expected to b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c3ddcf9c31ad83d37812a556931b499
http://arxiv.org/abs/2202.00859
http://arxiv.org/abs/2202.00859
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 481:4863-4876
An extended gravitational object embedded in a parent system comprised of gas and collisionless particles may undergo both dynamical friction (DF) and mass loss by tidal forces. If the object is compact enough, it can increase its mass through accret
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::575c2baa48032abe6a9c24ff6c1d88b4
https://doi.org/10.1093/mnras/sty2610
https://doi.org/10.1093/mnras/sty2610
Publikováno v:
The Astrophysical Journal. 906:15
Supernova (SN) explosions can potentially affect the structure and evolution of circumnuclear disks in active galactic nuclei (AGN). Some previous studies have suggested that a relatively low rate of SN explosions can provide an effective value of al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aeb5403f03bd7f209b48e6e03bfa6f64
https://doi.org/10.3847/1538-4357/abca88
https://doi.org/10.3847/1538-4357/abca88
We evaluate the torque acting on a gravitational perturber on a retrograde circular orbit in the midplane of a gaseous disk. We assume that the mass of this satellite is so low it weakly disturbs the disk (type I migration). The perturber may represe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a678d767308ad374159d4cbbe55eccb
http://arxiv.org/abs/1805.08852
http://arxiv.org/abs/1805.08852
Publikováno v:
Monthly Notices of the Royal Astronomical Society
We study the relativistic Bondi-Hoyle-Lyttleton accretion onto a Schwarzschild black hole (BH), which is surrounded by rigid and small, randomly distributed, bodies. These bodies are idealized representations of substructure like stars passing close
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe8e745a2e1951b9bb64373e26c50629
We study gap formation in gaseous protoplanetary discs by a Jupiter mass planet. The planet's orbit is circular and inclined relative to the midplane of the disc. We use the impulse approximation to estimate the gravitational tidal torque between the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebfa4bc3c444ec0dfa3e597a90f2ef2c
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 433:2172-2181
We quantify the effects of magnetic fields, cosmic rays and gas pressure on the rotational velocity of HI gas in the Milky Way, at galactic distances between Rsun and 2Rsun. The magnetic field is modelled by two components; a mainly azimuthal magneti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a856affc5590edfae21b89180cf704f
https://doi.org/10.1093/mnras/stt880
https://doi.org/10.1093/mnras/stt880
We analyse the rotation curves and gravitational stability of a sample of six bulgeless galaxies for which detailed images reveal no evidence for strong bars. We explore two scenarios: Newtonian dark matter models and MOdified Newtonian Dynamics (MON
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96305789f2353ed3751fbc773b01c736