期刊
ASTROPHYSICAL JOURNAL
卷 690, 期 1, 页码 875-878出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/690/1/875
关键词
dust, extinction; ISM: magnetic fields
In interstellar dust grains, internal processes dissipate rotational kinetic energy. The dissipation is accompanied by thermal fluctuations, which transfer energy from the vibrational modes to rotation. Together, these processes are known as internal relaxation. For the past several years, internal relaxation has been thought to give rise to thermal flipping, with profound consequences for grain alignment theory. I show that thermal flipping is not possible in the limit that the inertia tensor does not vary with time.
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