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of 32
pro vyhledávání: '"Claudio Zanni"'
Classical T Tauri stars (CTTs) are young (a few Myr old) magnetized stellar objects that are accreting from their surroundings disks. Previous numerical studies have demonstrated that accretion in CTTs occurs in two different states: stable or unstab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1068748e8292f6b6477963e62697dab7
The magnetic interaction between a classical T Tauri star and its surrounding accretion disk is thought to influence its rotational evolution. We use 2.5D magnetohydrodynamic, axisymmetric simulations of star-disk interaction, computed via the PLUTO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58a85b45692707570c46b554d7305909
http://arxiv.org/abs/2203.00326
http://arxiv.org/abs/2203.00326
Autor:
Lewis G. Ireland, Sean P. Matt, Charlie R. Davey, Owain L. Harris, Tobias W. Slade-Harajda, Adam J. Finley, Claudio Zanni
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, 2022, 925, ⟨10.3847/1538-4357/ac3a71⟩
The Astrophysical Journal, 2022, 925, ⟨10.3847/1538-4357/ac3a71⟩
On the main sequence, low-mass and solar-like stars are observed to spin-down over time, and magnetized stellar winds are thought to be predominantly responsible for this significant angular momentum loss. Previous studies have demonstrated that the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::077a1a0548775bbacb5f95a80ad2f55d
https://insu.hal.science/insu-03745339
https://insu.hal.science/insu-03745339
Recent studies showed that observations of line emission from shocks in YSO jets require a substantial amount of ionization of the pre-shock matter. Photoionization from X-ray emitted close to the central source may be responsible for the initial ion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00fd9a18ef929775cb1329c83b9b1f87
http://hdl.handle.net/2318/1763036
http://hdl.handle.net/2318/1763036
The early pre-main sequence phase during which they are still likely surrounded by an accretion disk represents a puzzling stage of the rotational evolution of solar-mass stars. While they are still accreting and contracting they do not seem to spin-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1ba71e5544710f89d27532ebf2ef6a3
http://hdl.handle.net/20.500.12386/29800
http://hdl.handle.net/20.500.12386/29800
Autor:
Petros Tzeferacos, Andrea Mignone, Silvano Massaglia, Attilio Ferrari, Claudio Zanni, Gianluigi Bodo
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 400:820-834
Magnetohydrodynamic models of collimated outflows produced by accretion discs around compact objects can be used for interpreting the phenomenology of active astrophysical objects as young stellar objects, microquasars, X-ray binaries, gamma-ray burs
Publikováno v:
Astrophysics and Space Science. 322:3-9
The combination of accretion disks and supersonic jets is used to model many active astrophysical objects, viz., young stars, relativistic stars, and active galactic nuclei. However, existing theories on the physical processes by which these structur
Publikováno v:
Proceedings of the International Astronomical Union. 3:307-314
In this contribution we first briefly review our current knowledge on the physics of accretion discs driving self-confined jets. It will be shown that a large scale magnetic field is expected to thread the innermost disc regions, giving rise to a tra
Autor:
Claudio Zanni, Attilio Ferrari, Gianluigi Bodo, Paola Rossi, Giuseppe Murante, Silvano Massaglia
Publikováno v:
Astronomy & Astrophysics. 429:399-415
X-Ray observations of groups and clusters of galaxies show that the Intra-Cluster Medium (ICM) in their cores is hotter than expected from cosmological numerical simulations of cluster formation which include star formation, radiative cooling and SN
Publikováno v:
Scopus-Elsevier
A significant fraction of extended radio sources presents a peculiar X-shaped radio morphology: in addition to the classical double lobed structure, radio emission is also observed along a second axis of symmetry in the form of diffuse wings or tails