Bibcode
García, R. A.; Jiménez, A.; Mathur, S.; Ballot, J.; Eff-Darwich, A.; Jiménez-Reyes, S. J.; Pallé, P. L.; Provost, J.; Turck-Chièze, S.
Bibliographical reference
Astronomische Nachrichten, Vol.329, Issue 5, p.476
Advertised on:
6
2008
Citations
60
Refereed citations
33
Description
Since the beginning of this century we have attended a blooming of the
gravity-mode research thanks to the unprecedented quality of the data
available, either from space with SoHO, or from the ground-based
networks as BiSON or GONG. From the first upper limit of the
gravity-mode amplitudes fixed at 10 mm/s at 200 μHz given by
Appourchaux et al. (2000), on one hand, a peak was supposed to be a
component of the ℓ = 1, n = 1 mixed mode (García et al.
2001a, 2001b; Gabriel et al. 2002) and, on the other hand, a couple of
patterns - multiplets - were attributed to gravity modes
(Turck-Chièze et al. 2004; Mathur et al. 2007). One of these
patterns, found around 220 μHz, could be labeled as the ℓ = 2, n
=-3 g mode, which is expected to be the one with the highest surface
amplitude (Cox & Guzik 2004). Finally, in 2007, García et al.
were able to measure the fingertips of the dipole gravity modes looking
for their asymptotic properties. In the present paper we present an
update of the recent developments on this subject with special attention
to the 220 μHz region, the dipole asymptotic properties and the
impact of the incoming g-mode observations on the knowledge of the solar
structure and rotation profile.
Related projects
Helio and Astero-Seismology and Exoplanets Search
The principal objectives of this project are: 1) to study the structure and dynamics of the solar interior, 2) to extend this study to other stars, 3) to search for extrasolar planets using photometric methods (primarily by transits of their host stars) and their characterization (using radial velocity information) and 4) the study of the planetary
Savita
Mathur