Astrophysical jets: insights into long-term hydrodynamics

Tordella, D.; Belan, M.; Massaglia, S.; De Ponte, S.; Mignone, A.; Bodenschatz, E.; Ferrari, A.

doi:10.1088/1367-2630/13/4/043011

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Astrophysical jets: insights into long-term hydrodynamics

MPS-Authors

/persons/resource/persons173472

Bodenschatz, E.
Laboratory for Fluid Dynamics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Tordella, D., Belan, M., Massaglia, S., De Ponte, S., Mignone, A., Bodenschatz, E., & Ferrari, A. (2011). Astrophysical jets: insights into long-term hydrodynamics. New Journal of Physics, 13, 043011-1-043011-26. doi:10.1088/1367-2630/13/4/043011.

引用: https://hdl.handle.net/11858/00-001M-0000-0029-11C5-7

要旨

Astrophysical jets are ubiquitous throughout the universe. They can be observed to emerge from protostellar objects, stellar x-ray binaries and supermassive black holes located at the center of active galaxies, and they are believed to originate from a central object that is surrounded by a magnetized accretion disc. With the motivations to understand whether hypersonic Newtonian jets produce any similarity to the morphologies observed in jets from young stellar objects (YSOs) and whether numerical codes, based on Godunov-type schemes, capture the basic physics of shocked flows, we have conceived a laboratory experiment and performed three-dimensional (3D) numerical simulations that reproduce the mid-to-long-term evolution of hypersonic jets. Here we show that these jets propagate, maintaining their collimation over long distances, in units of the jet initial radius. The jets studied are quasi-isentropic, are both lighter and heavier than the ambient and meet the two main scaling parameter requirements for proto-stellar jets: the ejection Mach number and the ambient/jet density ratio.