Volume 372, Number 1, June II 2001
|Page(s)||317 - 325|
|Section||Celestial mechanics and astrometry|
|Published online||15 June 2001|
Search for global oscillations on Jupiter with a double-cell sodium magneto-optical filter
Università degli Studi di Roma "La Sapienza", P.le A. Moro 5, 00185 Rome, Italy
2 Osservatorio Astronomico "V. Cerulli" di Teramo, Via M. Maggini, 64100 Teramo, Italy
3 Osservatorio Astronomico di Capodimonte, Via Moiariello 16, 80131 Napoli, Italy
4 Osservatorio Astronomico di Roma, Via Frascati 33, 00040, Monte Porzio Catone, Italy
Corresponding author: M. Dolci, email@example.com
Accepted: 22 March 2001
Doppler observations on Jupiter are presented and discussed. A two-cells Magneto-Optical Filter (MOF), able to obtain two separate signals, Red and Blue, on the opposite wings of the Sodium D-lines, along with a continuum reference signal, has been used. This set of data permits to discriminate between real oscillations and albedo "modes" by means of the two algorithms and /conti nuum. No unambiguous oscillation modes were detected with amplitudes above the 1-σ level of ~1.2 m s-1 in the range between 0.5 and 0.7 mHz. However, using refined analysis for signal recovery in a noisy background we notice an increase of power also in the region of the solar 5 min oscillations. The albedo variations on the Jupiter's surface and instrumental effects are addressed to be responsible for the spurious signals.
Key words: planets and satellites: general
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.