Simultaneous NIR/sub-mm observation of flare emission from SgrA*

Details Simultaneous NIR/sub-mm observation of flare emission from SgrA* Simultaneous NIR/sub-mm observation of flare emission from SgrA*

2008-11-17

arxiv.org/abs/0811.2753v1

Astronomy and Astrophysics

Astrophysics

12 pages, 9 figures, 3 tables, in press with A&A

Scientific paper

10.1051/0004-6361:200810924

We report on a successful, simultaneous observation and modeling of the sub-millimeter to near-infrared flare emission of the Sgr A* counterpart associated with the super-massive black hole at the Galactic center. Our modeling is based on simultaneous observations that have been carried out on 03 June, 2008 using the NACO adaptive optics (AO) instrument at the ESO VLT and the LABOCA bolometer at the APEX telescope. Inspection and modeling of the light curves show that the sub-mm follows the NIR emission with a delay of 1.5+/-0.5 hours. We explain the flare emission delay by an adiabatic expansion of the source components.

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