2016MNRAS.462.1382B

Query : 2016MNRAS.462.1382B

2016MNRAS.462.1382B - Mon. Not. R. Astron. Soc., 462, 1382-1392 (2016/October-3)

Asymmetric structure in Sgr A* at 3 mm from closure phase measurements with VLBA, GBT and LMT.

BRINKERINK C.D., MUELLER C., FALCKE H., BOWER G.C., KRICHBAUM T.P., CASTILLO E., DELLER A.T., DOELEMAN S.S., FRAGA-ENCINAS R., GODDI C., HERNANDEZ-GOMEZ A., HUGHES D.H., KRAMER M., LEON-TAVARES J., LOINARD L., MONTANA A., MOSCIBRODZKA M., ORTIZ-LEON G.N., SANCHEZ-ARGUELLES D., TILANUS R.P.J., WILSON G.W. and ZENSUS J.A.

Abstract (from CDS):

We present the results of a closure phase analysis of 3 mm very long baseline interferometry measurements performed on Sagittarius A* (Sgr A*). We have analysed observations made in 2015 May using the Very Long Baseline Array, the Robert C. Byrd Green Bank Telescope and the Large Millimeter Telescope Alfonso Serrano and obtained non-zero closure phase measurements on several station triangles - indicative of a non-point-symmetric source structure. The data are fitted with an asymmetric source structure model in Sgr A*, represented by a simple two-component model, which favours a fainter component due east of the main source. This result is discussed in light of a scattering screen with substructure or an intrinsically asymmetric source.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): accretion, accretion discs - techniques: interferometric - galaxies: active - galaxies: jets - radio continuum: galaxies - radio continuum: galaxies

Simbad objects: 4

goto Full paper

goto View the references in ADS

Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
2 QSO B1730-130 Bla 17 33 02.70578907 -13 04 49.5482119   18 19.50 18.78 17.39 ~ 1198 1
3 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
4 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2

To bookmark this query, right click on this link: simbad:objects in 2016MNRAS.462.1382B and select 'bookmark this link' or equivalent in the popup menu