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The inhomogeneous response across the solar disc of unresolved Doppler velocity observations
A. M. Broomhall, W. J. Chaplin, Y. Elsworth +1
Unresolved Doppler velocity measurements are not homogenous across the solar disc (Brookes et al. 1978). We consider one cause of the inhomogeneity that originates from the BiSON i…
Asteroseismology of Red Giant stars
N. J. Tarrant, W. J. Chaplin, Y. P. Elsworth +2
Sun-like oscillations, that is p-modes excited stochastically by convective noise, have now been observed in a number of Red Giant stars. Compared to those seen in the Sun, these m…
Are low-degree p mode frequencies predictable from one cycle to the next?
A. M. Broomhall, W. J. Chaplin, Y. Elsworth +2
The Birmingham Solar-Oscillations Network (BiSON) has been collecting data for over 30yrs and so observations span nearly three 11yr solar activity cycles. This allows us to addres…
solarFLAG hare and hounds: estimation of p-mode frequencies from Sun-as-star helioseismology data
S. J. Jimenez-Reyes, W. J. Chaplin, R. A. Garcia +14
We report on the results of the latest solarFLAG hare-and-hounds exercise, which was concerned with testing methods for extraction of frequencies of low-degree solar p modes from d…
Oscillations in Beta UMi - Observations with SMEI
N. J. Tarrant, W. J. Chaplin, Y. Elsworth +2
Aims: From observations of the K4III star Beta UMi we attempt to determine whether oscillations or any other form of variability is present. Methods: A high-quality photometric tim…
AsteroFLAG: first results from hare-and-hounds Exercise 1
W. J. Chaplin, T. Appourchaux, T. Arentoft +15
We report on initial results from the first phase of Exercise 1 of the asteroFLAG hare and hounds. The asteroFLAG group is helping to prepare for the asteroseismology component of…