Universität zu Köln

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:	Creators Email ORCID ORCID Put Code Shahzamanian, Banafsheh UNSPECIFIED orcid.org/0000-0001-6437-6806 UNSPECIFIED Eckart, Andreas UNSPECIFIED orcid.org/0000-0001-6049-3132 UNSPECIFIED Zajacek, Michal UNSPECIFIED orcid.org/0000-0001-6450-1187 UNSPECIFIED Valencia-S, Monica UNSPECIFIED UNSPECIFIED UNSPECIFIED Sabha, Nadeen B. UNSPECIFIED orcid.org/0000-0001-7134-9005 UNSPECIFIED
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:	Keywords Language SUPERMASSIVE BLACK-HOLE; STELLAR PROPER MOTIONS; GALACTIC-CENTER; EXCESS SOURCES Multiple languages Astronomy & Astrophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19378