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1977•Monthly Notices of the Royal Astronomical SocietyOpen access

The polarization of the Galactic Centre at 2.2 micron

D. J. Adams, J. H. Hough

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Abstract

The detection of linear polarization in the 2 .2-micron radiation from the Galactic Centre is reported. The polarization amounts to 8.1 ±1.5 per cent at a position angle of |$+\,12.5\,\pm \,{7}^{^{\circ}}$|⁠. The position angle coincides with that observed for visible stars in the same region of sky. Polarization by aligned interstellar dust grains may account for the observation.

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What this paper is about

The detection of linear polarization in the 2 .2-micron radiation from the Galactic Centre is reported. The polarization amounts to 8.1 ±1.5 per cent at a position angle of |$+\,12.5\,\pm \,{7}^{^{\circ}}$|⁠. The position angle coincides with that observed for visible stars in the same region of sky. Polarization by aligned interstellar dust grains may account for the observation.

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Available abstract

The detection of linear polarization in the 2 .2-micron radiation from the Galactic Centre is reported. The polarization amounts to 8.1 ±1.5 per cent at a position angle of |$+\,12.5\,\pm \,{7}^{^{\circ}}$|⁠. The position angle coincides with that observed for visible stars in the same region of sky. Polarization by aligned interstellar dust grains may account for the observation.

Key concepts: Physics, Polarization (electrochemistry), Position angle, Linear polarization, Sky, Astrophysics, Polarization in astronomy, Cosmic dust

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