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| Paper: |
Magnetic White Dwarfs with Debris Disks |
| Volume: |
469, 18th European White Dwarf Workshop (EUROWD12) |
| Page: |
417 |
| Authors: |
Külebi, B.; Ekși, K. Y.; Lorén–Aguilar, P.; Isern, J.; García-Berro, E. |
| Abstract: |
It has long been accepted that a possible mechanism for explaining the
existence of magnetic white dwarfs is the merger of a binary white
dwarf system, as there are viable mechanisms for producing sustainable
magnetism within the merger product. However, the lack of rapid
rotators in the magnetic white dwarf population has been always
considered a problematic issue of this scenario. In order to explain
this discrepancy we build a model in which the interaction between the
magnetosphere of the star and the disk induces angular momentum transfer. Our
model predicts that the magnetospheric interaction of magnetic white
dwarfs with their disks results in a significant spin down, and we
show that the observed rotation period of REJ 0317-853, which is suggested to
be a product of a double degenerate merger, can be reproduced. |
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