The majority of all stars finish their evolution as white dwarf stars. If white dwarf stars kept the angular momentum of their progenitors, they should rotate relatively rapidly, with typical periods of the order of a few seconds. Observations show that they rotate much more slowly, but it is not known whether a white dwarf could 'hide' some of its original angular momentum below its superficial layers. Here, a determination of the internal rotation profile of a white dwarf shows that it rotates as a solid body and with a relatively long period.
- S. Charpinet
- G. Fontaine
- P. Brassard
