Browsing Research Output by Subject "Asteroseismology"
Now showing items 1-4 of 4
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Fast radio burst trains from magnetar oscillations
(IOP Publishing, 2020)Quasi-periodic oscillations inferred during rare magnetar giant flare tails were initially interpreted as torsional oscillations of the neutron star (NS) crust, and have been more recently described as global core+crust ... -
Short time-scale frequency and amplitude variations in the pulsations of an roAp star: HD 217522
(Oxford Univ Press, 2015)Photometric observations of HD 217522 in 1981 revealed only one pulsation frequency ν1 = 1.215 29 mHz. Subsequent observations in 1989 showed the presence of an additional frequency ν2 = 2.0174 mHz. New observations in ... -
The Nainital-Cape Survey IV. A search for pulsational variability in 108 chemically peculiar stars
(EDP Sciences, 2016)Context. The Nainital-Cape Survey is a dedicated ongoing survey program to search for and study pulsational variability in chemically peculiar (CP) stars to understand their internal structure and evolution. Aims. The main ... -
Whole Earth Telescope discovery of a strongly distorted quadrupole pulsation in the largest amplitude rapidly oscillating Ap star
(Oxford Univ Press, 2018)We present a new analysis of the rapidly oscillating Ap (roAp) star, 2MASS J19400781 − 4420093 (J1940; V = 13.1). The star was discovered using SuperWASP broad-band photometry to have a frequency of 176.39 d−1 (2041.55 μHz; ...