AAS 198th Meeting, June 2001
Session 64. Laboratory Astrophysics
Display, Wednesday, June 6, 2001, 10:00am-7:00pm, Exhibit Hall

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[64.06] Jets in astrophysics and in laser experiments*

B.A. Remington, M.J. Edwards, T.S. Perry (LLNL), B.H. Wilde (LANL), J.M. Foster, P.A. Rosen (AWE), K. Shigemori (Osaka University), J.M. Stone, N.J. Turner (University of Maryland)

Galactic jets present some of the most visually intriguing images encountered in modern astronomy. The protostellar jets which produce Herbig-Haro (HH) objects are collimated bipolar outflows thought to emerge from the central few stellar radii during the star formation process, and are characterized by Mach numbers and density radios (jet/ambient) >> 1. Radiative cooling can also be important. Experiments on the Omega, Gekko, and Nova lasers have shown that jets can be created and diagnosed in the laboratory at similar Mach numbers and density ratios, and in some cases with significant radiative cooling. [1-4] The potential for using experiments on high power lasers to investigate the dynamics relevant to HH jets will be discussed. *Work performed partially for the US DOE by UC LLNL under contract W-7405-Eng-48.

1. D.R. Farley et al., Phys. Rev. Lett. 83, 1982 (1999). 2. J. Foster et al., Bull. Am. Phys. Soc. 45, 197 (2000), paper JP1-30. 3. K. Shigemori et al., Phys. Rev. E 62, 8838 (2000). 4. J.M. Stone et al., Ap. J. Suppl. 127, 497 (2000).

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