MG15 - Talk detail |
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Participant |
Deb, Arnab | |||||||
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Institution |
S.N. Bose National Centre for Basic Sciences - Block - JD, Sector- III, Salt Lake - Kolkata - West Bengal - India | |||||||
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Session |
AC1 |
Accepted |
Yes |
Order |
99 |
Time |
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Talk |
Poster abstract |
Title |
Role of toroidal magnetic flux tubes in collimation and acceleration of outflows | |||||
| Coauthors | Chakrabarti, Sandip K.; Giri, Kinsuk | |||||||
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Abstract |
Due to predominantly rotating accretion flows close to the inner edge of a disk, magnetic fields advected through the flow would be toroidal. We study the trajectories of these toroidal flux tubes inside a time-dependent geometrically thick flow which undergoes a centrifugal force supported shock. These flux tubes are under the influence of drag force, tension, Coriolis force and buoyancy force. We also study effects of these flux tubes on the dynamics of the inflow and the outflow specifically focussing on the outflow properties such as its collimation and the rate. It is seen that depending upon the cross-sectional radius of the flux tubes which control the drag force, these field lines may move towards the central object or oscillate vertically before eventually escaping out of the funnel wall (pressure zero surfaces) along the vertical direction. A comparison of results obtained with and without flux tubes clearly show the role these flux tubes play in collimation and acceleration of jets and outflows. |
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Pdf file |
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