Results 41 to 50 of about 606,368 (330)

Radio jets from stellar tidal disruptions [PDF]

open access: yes, 2011
A star that passes too close to a massive black hole will be torn apart by tidal forces. The flare of photons emitted during the accretion of the stellar debris is predicted to be observable and candidates of such events have been observed at optical to ...
Bade   +61 more
core   +3 more sources

Braking down an accreting protostar: disc-locking, disc winds, stellar winds, X-winds and Magnetospheric Ejecta [PDF]

open access: yes, 2013
Classical T Tauri stars are low mass young forming stars that are surrounded by a circumstellar accretion disc from which they gain mass. Despite this accretion and their own contraction that should both lead to their spin up, these stars seem to ...
Ferreira, Jonathan
core   +1 more source

Hypersonic jets in astrophysical conditions: focus on spreading and asymmetric stability properties

open access: yesNew Journal of Physics, 2014
High Mach number jets emanating from young stars show remarkable collimation, low opening angle and resilience against the growth of instabilities, especially the asymmetric ones. In recent laboratory experiments instances of asymmetric three-dimensional
M Belan   +4 more
doaj   +1 more source

The Angular Momenta of Neutron Stars and Black Holes as a Window on Supernovae [PDF]

open access: yes, 2011
It is now clear that a subset of supernovae display evidence for jets and are observed as gamma-ray bursts. The angular momentum distribution of massive stellar endpoints provides a rare means of constraining the nature of the central engine in core ...
Miller, J. M.   +2 more
core   +1 more source

Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433 [PDF]

open access: yesScience
SS 433 is a microquasar, a stellar binary system that launches collimated relativistic jets. We observed SS 433 in gamma rays using the High Energy Stereoscopic System (H.E.S.S.) and found an energy-dependent shift in the apparent position of the gamma ...
F. Aharonian   +166 more
semanticscholar   +1 more source

Jet-powered Turbulence in Common Envelope Evolution

open access: yesThe Astrophysical Journal, 2023
We conduct a three-dimensional hydrodynamical simulation of common envelope evolution (CEE) where a neutron star (NS) spirals in inside the envelope of a red supergiant star in a predetermined orbit.
Shlomi Hillel, Ron Schreier, Noam Soker
doaj   +1 more source

Bubbles in Planetary Nebulae and Clusters of Galaxies: Jet Bending

open access: yes, 2006
We study the bending of jets in binary stellar systems. A compact companion accretes mass from the slow wind of the mass-losing primary star, forms an accretion disk, and blows two opposite jets. These fast jets are bent by the slow wind.
Bisker, Gili, Soker, Noam
core   +1 more source

Time-variable Jet Ejections from RW Aur A, RY Tau, and DG Tau

open access: yesThe Astrophysical Journal Supplement Series, 2022
We present Gemini-NIFS, Very Large Telescope-SINFONI, and Keck-OSIRIS observations of near-IR [Fe ii ] emission that are associated with well-studied jets from three active T Tauri stars—RW Aur A, RY Tau, and DG Tau—taken from 2012 to 2021.
Michihiro Takami   +19 more
doaj   +1 more source

Powerful jets from accreting black holes: evidence from the optical and infrared

open access: yes, 2010
A common consequence of accretion onto black holes is the formation of powerful, relativistic jets that escape the system. In the case of supermassive black holes at the centres of galaxies this has been known for decades, but for stellar-mass black ...
Fender, R. P., Russell, D. M.
core   +1 more source

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