Hydrodynamic time correlation functions in the presence of a gravitational field

✍ Scribed by A. Sandoval-Villalbazo; L.S. Garcı́a-Colı́n

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 136 KB
• Volume: 327
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/s0378-4371(03)00400-x

✦ Synopsis

This paper shows that the ordinary Brillouin spectrum peaks associated to scattered radiation of acoustic modes in a uid su er a shift in their values due to gravitational e ect. The approach is based on the ordinary linearized Navier-Stokes equations for a uid coupled to a Newtonian gravitational potential. The formalism leads to a dispersion relation that contains both gravitational and dissipative e ects. It is also shown that the Brillouin peaks tend to condense into a single peak when the uid modes approach the critical Jeans wave number.