SIMBAD references

2016ApJ...831...59D - Astrophys. J., 831, 59-59 (2016/November-1)

Quantum suppression of alignment in ultrasmall grains: microwave emission from spinning dust will be negligibly polarized.

DRAINE B.T. and HENSLEY B.S.

Abstract (from CDS):

The quantization of energy levels in small, cold, free-flying nanoparticles suppresses dissipative processes that convert grain rotational kinetic energy into heat. For interstellar grains small enough to have ∼GHz rotation rates, the suppression of dissipation can be extreme. As a result, alignment of such grains is suppressed. This applies both to alignment of the grain body with its angular momentum \boldsymbolJ, and to alignment of \boldsymbolJ with the local magnetic field \boldsymbolB0. If the anomalous microwave emission is rotational emission from spinning grains, then it will be negligibly polarized at GHz frequencies, with P <= 10–6 at ν > 10 GHz.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): cosmic background radiation - dust, extinction - ISM: magnetic fields - molecular processes - polarization - solid state: refractory - solid state: refractory

Status at CDS : Examining the need for a new acronym.

Simbad objects: 6

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