Simultaneous NIR/sub-mm observation of flare emission from SgrA*
arXiv:0811.2753 · doi:10.1051/0004-6361:200810924
Abstract
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.
12 pages, 9 figures, 3 tables, in press with A&A
References in corpus (13)
- Polarimetry of near-infrared flares from Sagittarius A*
- Flaring Activity of Sgr A* at 43 and 22 GHz: Evidence for Expanding Hot Plasma
- A Constant Spectral Index for Sagittarius A* During Infrared/X-ray Intensity Variations
- Simultaneous Chandra, CSO and VLA Observations of Sgr A*: The Nature of Flaring Activity
- How to hide large scale outflows: size constraints on the jets of Sgr A*
- Near-infrared polarimetry setting constraints on the orbiting spot model for Sgr A* flares
- Polarized NIR and X-ray Flares from SgrA*
- K-band polarimetry of an Sgr A* flare with a clear sub-flare structure
- On the orientation of the Sagittarius A* system
- LABOCA observations of nearby, active galaxies
- Hot-spot model for accretion disc variability as random process
- Diffraction Limited Imaging Spectroscopy of the SgrA* Region using OSIRIS, a new Keck Instrument
- The Variability of Polarized Radiation from Sgr A*