The Spiral Wave of Our Galaxy Near Inner Lindblad Resonance
AUTOR(ES)
Mark, James W-K.
RESUMO
The dispersion relationship for short-wavelength spiral density waves in our Galaxy has been refined to remove the divergences that occurred in wave number and in amplitude as inner Lindblad resonance is approached. The wave is found to be evanescent in an annular region near 4 kpc. By 3 kpc, the inward propagating trailing wave is completely absorbed. The outgoing leading wave is suppressed compared to the trailing one because it begins in the evanescent state. Throughout this region of inner Lindblad resonance, a smooth wave amplitude has been obtained, and it has a sharp peak correlating well with the observed density of ionized hydrogen.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=389359Documentos Relacionados
- The nuclear region of the spiral galaxy M81.
- Spectrophotometry of H II regions in the spiral galaxy M101
- Origin choice and petal loss in the flower garden of spiral wave tip trajectories
- Hearing: Travelling Wave or Resonance?
- Positive genetic feedback governs cAMP spiral wave formation in Dictyostelium.