On the ratio noise-signal of long-periodic oscillations in the general atmospheric circulation

1957 ◽  
Vol 37 (1) ◽  
pp. 309-317 ◽  
Author(s):  
H. J. Boer
Keyword(s):  
Atmospheric Circulation ◽  
Noise Signal ◽  
Periodic Oscillations

Quasi-Periodic Oscillations in Dwarf Novae

1979 ◽  
Vol 46 ◽  
pp. 77-88
Author(s):  
Edward L. Robinson
Keyword(s):  
Binary Systems ◽  
Outer Edge ◽  
Light Curves ◽  
Close Binary ◽  
Bright Spot ◽  
Dwarf Novae ◽  
Periodic Oscillations ◽  
High Frequencies ◽  
Short Period ◽  
Typical Time

Three distinct kinds of rapid variations have been detected in the light curves of dwarf novae: rapid flickering, short period coherent oscillations, and quasi-periodic oscillations. The rapid flickering is seen in the light curves of most, if not all, dwarf novae, and is especially apparent during minimum light between eruptions. The flickering has a typical time scale of a few minutes or less and a typical amplitude of about .1 mag. The flickering is completely random and unpredictable; the power spectrum of flickering shows only a slow decrease from low to high frequencies. The observations of U Gem by Warner and Nather (1971) showed conclusively that most of the flickering is produced by variations in the luminosity of the bright spot near the outer edge of the accretion disk around the white dwarf in these close binary systems.

PERIODIC OSCILLATIONS AND TURBULENCE OF HOT-CARRIER PLASMA AT 4.2 K IN n-GaAs

1981 ◽  
Vol 42 (C7) ◽  
pp. C7-51-C7-56
Author(s):  
K. Aoki ◽  
T. Kobayashi ◽  
K. Yamamoto
Keyword(s):  
Periodic Oscillations ◽  
Hot Carrier
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