Detection of polarized mm and submm emission from SgrA*

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dc.creatorAitken, D. K.
dc.creatorGreaves, J. S.
dc.creatorChrysostomou, A.
dc.creatorHolland, W. S.
dc.creatorHough, J. H.
dc.creatorPierce-Price, D.
dc.creatorRicher, J. S.
dc.date2000-03-24
dc.date.accessioned2026-07-07T01:52:53Z
dc.date.available2026-07-07T01:52:53Z
dc.descriptionWe report the detection of linear polarization from SgrA* at 750, 850, 1350 and 2000 microns which confirms the contribution of synchrotron radiation. From the lack of polarization at longer wavelengths it appears to arise in the millimetre/sub-millimetre excess. There are large position angle changes between the millimetre and sub-millimetre results and these are discussed in terms of a polarized dust contribution in the sub-millimetre and various synchrotron models. In the model which best explains the data the synchrotron radiation from the excess is self-absorbed in the millimetre region and becomes optically thin in the sub-millimetre. This implies that the excess arises in an extremely compact source to the order of 2 Schwarzschild radii.
dc.description(12 pages, 1 figure, accepted by ApJ Letters)
dc.identifierhttps://arxiv.org/abs/astro-ph/0003379
dc.identifierhttp://arxiv.org/abs/astro-ph/0003379
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/775
dc.subjectAstrophysics
dc.titleDetection of polarized mm and submm emission from SgrA*
dc.typetext

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