A single linear response kernel for galactic disks reproduces Lindblad-Kalnajs waves, swing amplification, groove instabilities, and Lin-Shu-Kalnajs modes as limiting cases, with smooth connections between them.
West-Side Story (On the History of Density-Wave Spiral Theories in the 1960s)
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abstract
This paper deals with the history of Density-Wave Spiral Theories in the 1960s. The motivation to write the paper was the publication of two papers on the history of these theories (Pasha 2004a,b). Pasha's papers tell only a part of the story that took place on the Western side of the Iron Curtain in the 1960s. But giving only a part of the full story is a distortion of historical truth. Important work done on the Eastern side of the Iron Curtain is still little known in the West. In this paper, I fill the gaps and correct chronological inaccuracies in Pasha's story and mention facts that are still unknown (or little known) to the astronomical community in the West. I also give my recollection of the development of Density-Wave Spiral Theories in the 1960s.
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Galactokinetics II: Spiral structure
A single linear response kernel for galactic disks reproduces Lindblad-Kalnajs waves, swing amplification, groove instabilities, and Lin-Shu-Kalnajs modes as limiting cases, with smooth connections between them.