Astronomy and Astrophysics – Astrophysics
Scientific paper
1995-12-13
Astrophys.J. 458 (1996) L83-L85
Astronomy and Astrophysics
Astrophysics
uuencoded postscript file with 1 uuencoded postscript figure to appear in ApJ Letters
Scientific paper
10.1086/309926
We argue that the solar g-modes are unlikely to have caused the discrete peaks in the power spectrum of the solar wind flux observed by Thomson et al. (1995). The lower limit to the energy of individual g-modes, using the amplitudes given by Thomson et al., is estimated to be at least 10$^{36}$ erg for low order g-modes; the resulting surface velocity amplitude is at least 50 cm s$^{-1}$, larger than the observational upper limit (5 cm s$^{-1}$). We suggest that the most likely source for the excitation of solar g-modes is turbulent stresses in the convection zone. The surface velocity amplitude of low degree and low order g-modes resulting from this process is estimated to be of order 10$^{-2}$ cm s$^{-1}$. This amplitude is interestingly close to the detection threshold of the SOHO satellite. The long lifetime of g-modes ($\sim 10^6$ years for low order modes) should be helpful in detecting these small amplitude pulsations.
Bahcall John N.
Kumar Pawan
Quataert Eliot
No associations
LandOfFree
Observational Searches for Solar g-modes: Some Theoretical Considerations 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 Observational Searches for Solar g-modes: Some Theoretical Considerations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observational Searches for Solar g-modes: Some Theoretical Considerations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-651333