Zobrazeno 1 - 10
of 585
pro vyhledávání: '"Schleicher, D."'
Early-type stars have convective cores due to a steep temperature gradient produced by the CNO cycle. These cores can host dynamos, and the generated magnetic fields can be relevant to explain the magnetism observed in Ap/Bp stars. Our main objective
Externí odkaz:
http://arxiv.org/abs/2409.18066
We investigate the properties of circumstellar discs (CDs) produced in hydrodynamical simulations of gravoturbulent core collapse considering Kolmogorov and Burger-type turbulence. We report that massive discs are more prevalent in the Kolmogorov reg
Externí odkaz:
http://arxiv.org/abs/2406.09594
Autor:
Vergara, M. C., Schleicher, D. R. G., Escala, A., Reinoso, B., Dotti, F. Flammini, Kamlah, A. W. H., Liempi, M., Hoyer, N., Neumayer, N., Spurzem, R.
Publikováno v:
A&A 689, A34 (2024)
This paper explores the theoretical relation between star clusters and black holes within, focusing on the potential role of nuclear star clusters (NSCs), globular clusters (GCs), and ultra compact dwarf galaxies (UCDs) as environments that allow for
Externí odkaz:
http://arxiv.org/abs/2405.12008
In this paper we study the qualitative features induces by corrections to GR coming from String Theory, on the shadows of rotating black holes. We deal with the slowly rotating black hole solutions up to order $\mathcal{O}(a^3)$, to first order in $\
Externí odkaz:
http://arxiv.org/abs/2404.12811
The potential importance of magnetic fields during structure formation and gravitational collapse in the early Universe has been shown in several studies. In particular, magnetic field amplification by the small-scale dynamo plays an important role i
Externí odkaz:
http://arxiv.org/abs/2401.04054
Publikováno v:
2023BAAA...64..283A
Black holes (BH) are objects described by General Relativity (GR), particularly by the Kerr solution. However, this solution is based on simplifying assumptions. To achieve a more realistic approach, we investigate the impact of deviations from the K
Externí odkaz:
http://arxiv.org/abs/2309.11280
Autor:
Fernández-Trincado, J. G., Zamora, O., García-Hernández, D. A., Souto, Diogo, Dell’Agli, F., Schiavon, R. P., Geisler, D., Tang, B., Villanova, S., Hasselquist, Sten, Mennickent, R. E., Cunha, Katia, Shetrone, M., Prieto, Carlos Allende, Vieira, K., Zasowski, G., Sobeck, J., Hayes, C. R., Majewski, S. R., Placco, V. M., Beers, T. C., Schleicher, D. R. G., Robin, A. C., Mészáros, Sz., Masseron, T., Pérez, Ana E. García, Anders, F., Meza, A., Alves-Brito, A., Carrera, R., Minniti, D., Lane, R. R., Fernández-Alvar, E., Moreno, E., Pichardo, B., Pérez-Villegas, A., Schultheis, M., Roman-Lopes, A., Fuentes, C. E., Nitschelm, C., Harding, P., Bizyaev, D., Pan, K., Oravetz, D., Simmons, A., Ivans, Inese I., Blanco-Cuaresma, S., Hernández, J., Alonso-García, J., Valenzuela, O., Chanamé, J.
We report the peculiar chemical abundance patterns of 11 atypical Milky Way (MW) field red giant stars observed by the Apache Point Observatory Galactic Evolution Experiment (APOGEE). These atypical giants exhibit strong Al and N enhancements accompa
Externí odkaz:
http://hdl.handle.net/10150/625816
http://arizona.openrepository.com/arizona/handle/10150/625816
http://arizona.openrepository.com/arizona/handle/10150/625816
The presence of supermassive black holes at redshift z > 6 raises some questions about their formation and growth in the early universe. Due to the construction of new telescopes like the ELT to observe and detect SMBHs, it will be useful to derive t
Externí odkaz:
http://arxiv.org/abs/2305.18629
Autor:
Ortiz-Rodríguez, C. A., Käpylä, P. J., Navarrete, F. H., Schleicher, D. R. G, Mennickent, R. E., Hidalgo, J. P., Toro, B.
The aim of this study is to explore the magnetic and flow properties of fully convective M dwarfs as a function of rotation period Prot and magnetic Reynolds ReM and Prandlt numbers PrM. We performed three-dimensional simulations of fully convective
Externí odkaz:
http://arxiv.org/abs/2305.16447
Autor:
Hidalgo, J. P., Käpylä, P. J., Ortiz-Rodríguez, C. A., Navarrete, F. H., Toro, B., Schleicher, D. R. G.
According to our understanding of stellar evolution, early-type stars have radiative envelopes and convective cores due to a steep temperature gradient produced by the CNO cycle. Some of these stars (mainly, the subclasses Ap and Bp) have strong magn
Externí odkaz:
http://arxiv.org/abs/2303.10707