Zobrazeno 1 - 10
of 1 846
pro vyhledávání: '"Pellegrini, S."'
We present the theoretical framework to efficiently solve the Jeans equations for multi-component axisymmetric stellar systems, focusing on the scaling of all quantities entering them. The models may include an arbitrary number of stellar distributio
Externí odkaz:
http://arxiv.org/abs/2102.09440
Autor:
Boccardi, B., Perucho, M., Casadio, C., Grandi, P., Macconi, D., Torresi, E., Pellegrini, S., Krichbaum, T. P., Kadler, M., Giovannini, G., Karamanavis, V., Ricci, L., Madika, E., Bach, U., Ros, E., Giroletti, M., Zensus, J. A.
Aims. The collimation of relativistic jets in galaxies is a poorly understood process. Detailed radio studies of the jet collimation region have been performed so far in few individual objects, providing important constraints for jet formation models
Externí odkaz:
http://arxiv.org/abs/2012.14831
Recently, two-component spherical galaxy models have been presented, where the stellar profile is described by a Jaffe law, and the total density by another Jaffe law, or by an $r^{-3}$ law at large radii. We extend these two families to their ellips
Externí odkaz:
http://arxiv.org/abs/2010.14327
A hot plasma is the dominant phase of the interstellar medium of early-type galaxies. Its origin can reside in stellar mass losses, residual gas from the formation epoch, and accretion from outside of the galaxies. Its evolution is linked to the dyna
Externí odkaz:
http://arxiv.org/abs/1912.05857
The dynamical properties of spherically symmetric galaxy models, where a Jaffe (1983) stellar density profile is embedded in a total mass density decreasing as $r^{-3}$ at large radii, are presented. The orbital structure of the stellar component is
Externí odkaz:
http://arxiv.org/abs/1909.09639
Autor:
Ciotti, L., Pellegrini, S.
The fully analytical solution for isothermal Bondi accretion on a black hole (MBH) at the center of JJ two-component Jaffe (1983) galaxy models is presented. In JJ models the stellar and total mass density distributions are described by the Jaffe pro
Externí odkaz:
http://arxiv.org/abs/1808.00880
Autor:
Ciotti, L., Pellegrini, S.
The fully analytical solution for isothermal Bondi accretion on a black hole (MBH) at the center of two-component Jaffe (1983) galaxy models is presented. In a previous work we provided the analytical expressions for the critical accretion parameter
Externí odkaz:
http://arxiv.org/abs/1808.00871
A recent determination of the relationships between the X-ray luminosity of the ISM (Lx) and the stellar and total mass, for a sample of nearby early-type galaxies (ETGs), is used to investigate the origin of the hot gas, via a comparison with the re
Externí odkaz:
http://arxiv.org/abs/1802.02005
Autor:
Bruno, W., Dalmasso, B., Barile, M., Andreotti, V., Elefanti, L., Colombino, M., Vanni, I., Allavena, E., Barbero, F., Passoni, E., Merelli, B., Pellegrini, S., Morgese, F., Danesi, R., Calò, V., Bazan, V., D’Elia, A.V., Molica, C., Gensini, F., Sala, E., Uliana, V., Soma, P.F., Genuardi, M., Ballestrero, A., Spagnolo, F., Tanda, E., Queirolo, P., Mandalà, M., Stanganelli, I., Palmieri, G., Menin, C., Pastorino, L., Ghiorzo, P.
Publikováno v:
In ESMO Open August 2022 7(4)
Autor:
Ciotti, L., Pellegrini, S.
One of the most active fields of research of modern-day astrophysics is that of massive black hole formation and co-evolution with the host galaxy. In these investigations, ranging from cosmological simulations, to semi-analytical modeling, to observ
Externí odkaz:
http://arxiv.org/abs/1707.00741