Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Vigna-Gómez, Alejandro"'
Autor:
Stegmann, Jakob, Vigna-Gómez, Alejandro, Rantala, Antti, Wagg, Tom, Zwick, Lorenz, Renzo, Mathieu, van Son, Lieke A. C., de Mink, Selma E., White, Simon D. M.
A substantial fraction of stars can be found in wide binaries with projected separations between $\sim10^2$ and $10^5\,\rm AU$. In the standard lore of binary physics, these would evolve as effectively single stars that remotely orbit one another on
Externí odkaz:
http://arxiv.org/abs/2405.02912
Autor:
Valli, Ruggero, Tiede, Christopher, Vigna-Gómez, Alejandro, Cuadra, Jorge, Siwek, Magdalena, Ma, Jing-Ze, D'Orazio, Daniel J., Zrake, Jonathan, de Mink, Selma E.
Circumbinary disks are found in a variety of astrophysical scenarios, spanning binary star formation to accreting supermassive black hole binaries. The interaction with a circumbinary disk can yield opposite effects on the binary orbit leading to cir
Externí odkaz:
http://arxiv.org/abs/2401.17355
Autor:
Everson, Rosa Wallace, Hutchinson-Smith, Tenley, Vigna-Gómez, Alejandro, Ramirez-Ruiz, Enrico
Thorne-\.{Z}ytkow objects (T\.{Z}Os), hypothetical merger products in which a neutron star is embedded in a stellar core, are traditionally considered steady-state configurations. Their assembly, especially through dynamical channels, is not well-und
Externí odkaz:
http://arxiv.org/abs/2310.08658
Autor:
Vigna-Gómez, Alejandro, Willcox, Reinhold, Tamborra, Irene, Mandel, Ilya, Renzo, Mathieu, Wagg, Tom, Janka, Hans-Thomas, Kresse, Daniel, Bodensteiner, Julia, Shenar, Tomer, Tauris, Thomas M.
The recently reported observation of VFTS 243 is the first example of a massive black-hole binary system with negligible binary interaction following black-hole formation. The black-hole mass ($\approx 10\ M_{\odot}$) and near-circular orbit ($e\appr
Externí odkaz:
http://arxiv.org/abs/2310.01509
Observations suggest that massive stellar triples are common. However, their evolution is not yet fully understood. We investigate the evolution of hierarchical triples in which the stars of the inner binary experience chemically homogeneous evolutio
Externí odkaz:
http://arxiv.org/abs/2307.04793
Autor:
Vigna-Gómez, Alejandro, Murillo, Javier, Ramirez, Manelik, Borbolla, Alberto, Márquez, Ian, Ray, Prasun K.
Modelling and forecasting real-life human behaviour using online social media is an active endeavour of interest in politics, government, academia, and industry. Since its creation in 2006, Twitter has been proposed as a potential laboratory that cou
Externí odkaz:
http://arxiv.org/abs/2301.00626
We study the dynamics of a solar-type star orbiting around a black hole binary (BHB) in a nearly coplanar system. We present a novel effect that can prompt a growth and significant oscillations of the eccentricity of the stellar orbit when the system
Externí odkaz:
http://arxiv.org/abs/2207.10091
Hydrodynamic studies of stellar-mass compact objects (COs) in a common envelope (CE)have shown that the accretion rate onto the CO is a few orders of magnitude below the Bondi-Hoyle-Lyttleton (BHL) estimate. This is several orders of magnitude above
Externí odkaz:
http://arxiv.org/abs/2207.03514
Neutron stars receive velocity kicks at birth in supernovae. Those formed in electron-capture supernovae from super asymptotic giant branch stars -- the lowest mass stars to end their lives in supernovae -- may receive significantly lower kicks than
Externí odkaz:
http://arxiv.org/abs/2205.03989
Autor:
Vigna-Gómez, Alejandro, Liu, Bin, Aguilera-Dena, David R., Grishin, Evgeni, Ramirez-Ruiz, Enrico, Soares-Furtado, Melinda
TIC 470710327, a massive compact hierarchical triple-star system, was recently identified by NASA's Transiting Exoplanet Survey Satellite (TESS). TIC 470710327 is comprised of a compact (1.10 d) circular eclipsing binary, with total mass $\approx 10.
Externí odkaz:
http://arxiv.org/abs/2204.10600