332 citations · 399 across the 4 of their papers we have counts for
5 papers
Beating the confusion limit: The necessity of high angular resolution for probing the physics of Sagittarius A* and its environment: Opportunities for LINC-NIRVANA (LBT), GRAVITY (VLTI) and and METIS (E-ELT)
A. Eckart, N. Sabha, G. Witzel +16
The super-massive 4 million solar mass black hole (SMBH) SgrA* shows variable emission from the millimeter to the X-ray domain. A detailed analysis of the infrared light curves all…
The Fringe Detection Laser Metrology for the GRAVITY Interferometer at the VLTI
H. Bartko, S. Gillessen, S. Rabien +19
Interferometric measurements of optical path length differences of stars over large baselines can deliver extremely accurate astrometric data. The interferometer GRAVITY will simul…
GRAVITY: a four-telescope beam combiner instrument for the VLTI
S. Gillessen, F. Eisenhauer, G. Perrin +60
GRAVITY is an adaptive optics assisted Beam Combiner for the second generation VLTI instrumentation. The instrument will provide high-precision narrow-angle astrometry and phase-re…
Laser frequency combs for astronomical observations
Tilo Steinmetz, Tobias Wilken, Constanza Araujo-Hauck +9
A direct measurement of the universe's expansion history could be made by observing in real time the evolution of the cosmological redshift of distant objects. However, this would…
High-precision wavelength calibration of astronomical spectrographs with laser frequency combs
M. T. Murphy, Th. Udem, R. Holzwarth +8
We describe a possible new technique for precise wavelength calibration of high-resolution astronomical spectrographs using femtosecond-pulsed mode-locked lasers controlled by stab…