One-dimensional periodic flows with a shock transition - Application to the density wave theory of spiral structure

Details One-dimensional periodic flows with a shock transition - Application to the density wave theory of spiral structure One-dimensional periodic flows with a shock transition - Application to the density wave theory of spiral structure

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...267..109b&link_type=abstract

Astrophysical Journal, Part 1, vol. 267, Apr. 1, 1983, p. 109-118.

Astronomy and Astrophysics

Astrophysics

2

Density Wave Model, Galactic Structure, Hydrodynamics, One Dimensional Flow, Shock Fronts, Spiral Galaxies, Transition Flow, Astronomical Models, Disk Galaxies, Flow Velocity, Gas Flow, Gas Heating, Gravitational Fields, Sine Waves

Scientific paper

The problem of one-dimensional gas flow through a sinusoidal gravitational potential with a series of equally spaced shock fronts is considered. For time-independent and spatially periodic flows, an integral equation relates the flow velocity to the gravitational potential and source functions of energy and momentum densities. It is suggested that this problem simulates some of the dynamical effects of the azimuthal flow on a parcel of gas at a fixed radius in a galactic disk that supports a spiral density wave structure. It omits the radial motions. In this context, a typical azimuthal velocity across a spiral arm is specified and the resultant source functions are obtained. The implications of this calculation suggest heating of the gaseous disk by O and B stars behind the shock front, and subsequent interarm cooling is a plausible mechanism for maintaining the periodic cycling of the gaseous component of the galactic disk.

Affiliated with

Also associated with

No associations

Rating

One-dimensional periodic flows with a shock transition - Application to the density wave theory of spiral structure does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with One-dimensional periodic flows with a shock transition - Application to the density wave theory of spiral structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and One-dimensional periodic flows with a shock transition - Application to the density wave theory of spiral structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1233426