Wavelet Analysis of Stellar Differential Rotation I. The Sun.pdf

AA manuscript no will b e inserted by hand later ASTRONOMY AND Your thesaurus co des are ASTROPHYSICS Wavelet Analysis of Stellar Dierential Rotation I The Sun A Hemp elmann and RA Donahue Astrophysikalisches Institut Potsdam An der Sternwarte D Potsdam Germany Mount Wilson Institute Holladay Road Pasadena CA USA HarvardSmithsonian Center for Astrophysics Garden Street MS Cambridge MA USA ? Received date accepted date Abstract A key mystery in stellar magnetohydro dynam the relation b etween turbulence and stellar activity has ics is knowledge of stellar dierential rotation At present not yet b een well determined observationally the only practical metho d for detecting the presence of Stellar rotation and turbulent motions in the stel surface dierential rotation for slowlyrotating stars is lar interior pro duce not only a magnetic eld but also through the indirect measurement of the stellar butter lead to dierential rotation The observed r pattern y diagram ie the change of rotation p erio d determined of the solar rotation Libbrecht see also the review from light mo dulation caused by the change in mean lat