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Title

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

AuthorsEckart, Andreas; Schödel, Rainer; García-Marín, Macarena ; Witzel, Gunther; Weiss, Achim; Baganoff, Frederick Keith; Morris, Mark R.; Bertram, Thomas; Dovciak, Michal; Duschl, Wolfang J.; Karas, V.; Koenig, Stefan; Krichbaum, Thomas P.; Krips, Melanie; Kunneriath, D.; Lu, Rong S.; Markoff, Sera; Mauerhan, Jon Christian; Meyer, Laurence; Moultaka, Jihane; Muzic, Koraljka; Najarro, Francisco ; Pott, Jörg Uwe; Schuster, Karl F.; Sjouwerman, Lorant O.; Straubmeier, Christian; Thum, Clemens; Vogel, Stuart N.; Wiesemeyer, Helmut; Zamaninasab, Mohammad; Zensus, J. Antón
KeywordsBlack hole physics
Infrared: general
Accretion
Accretion disks
Galaxy: center
Nucleus
Black Holes: individual: SgrA*
Issue Date17-Nov-2008
CitationarXiv:0811.2753v1 [astro-ph]
AbstractWe 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.
Description12 pages, 9 figures, 3 tables.-- In press with Astronomy & Astrophysics.
URIhttp://hdl.handle.net/10261/8664
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