Shahzamanian, Banafsheh ORCID: 0000-0001-6437-6806, Eckart, Andreas ORCID: 0000-0001-6049-3132, Zajacek, Michal ORCID: 0000-0001-6450-1187, Valencia-S, Monica and Sabha, Nadeen B. ORCID: 0000-0001-7134-9005 (2018). Polarization: A Method to Reveal the True Nature of the Dusty S-Cluster Object (DSO/G2). Galaxies, 6 (1). BASEL: MDPI. ISSN 2075-4434

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Abstract

There have been different scenarios describing the nature of a dusty source, noted as Dusty S-cluster Object (DSO) or G2, orbiting around the Galactic centre super-massive black hole. Observing the polarized continuum emission of this source provides information on its nature and geometry. We show that this source is intrinsically polarized with polarization degree of 30%, implying that it has a non-spherical geometry, and a varying polarization angle in the ambient medium of the black hole. Its main observable properties can be well described and modeled with a pre-main-sequence star forming a bow shock as it approaches the Sgr A* position.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Shahzamanian, BanafshehUNSPECIFIEDorcid.org/0000-0001-6437-6806UNSPECIFIED
Eckart, AndreasUNSPECIFIEDorcid.org/0000-0001-6049-3132UNSPECIFIED
Zajacek, MichalUNSPECIFIEDorcid.org/0000-0001-6450-1187UNSPECIFIED
Valencia-S, MonicaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sabha, Nadeen B.UNSPECIFIEDorcid.org/0000-0001-7134-9005UNSPECIFIED
URN: urn:nbn:de:hbz:38-193787
DOI: 10.3390/galaxies6010013
Journal or Publication Title: Galaxies
Volume: 6
Number: 1
Date: 2018
Publisher: MDPI
Place of Publication: BASEL
ISSN: 2075-4434
Language: English
Faculty: Faculty of Mathematics and Natural Sciences
Divisions: Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics I
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
SUPERMASSIVE BLACK-HOLE; STELLAR PROPER MOTIONS; GALACTIC-CENTER; EXCESS SOURCESMultiple languages
Astronomy & AstrophysicsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/19378

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