The orbit of the star S2 around SgrA* from VLT and Keck data (2009)
Gillessen, S., Eisenhauer, F., Fritz, T. K., Bartko, H., Dodds-Eden, K., Pfuhl, O., ...
Two recent papers (Ghez et al. 2008, Gillessen et al. 2009) have estimated the mass of and the distance to the massive black hole in the center of the Milky Way using stellar orbits. The two...
Soft gamma-ray constraints on a bright flare from the Galactic Center supermassive black hole (2009)
Trap, G., Goldwurm, A., Terrier, R., Dodds-Eden, K., Gillessen, S., Genzel, R., ...
Sagittarius A* (Sgr A*) is the supermassive black hole residing at the center of the Milky Way. It has been the main target of an extensive multiwavelength campaign we carried out in April 2007....
An Extremely Top-Heavy IMF in the Galactic Center Stellar Disks (2009)
Bartko, H., Martins, F., Trippe, S., Fritz, T. K., Genzel, R., Ott, T., ...
We present new observations of the nuclear star cluster in the central parsec of the Galaxy with the adaptive optics assisted, integral field spectrograph SINFONI on the ESO/VLT. Our work allows the...
Simultaneous Multi-Wavelength Observations of Sgr A* during 2007 April 1-11 (2009)
Yusef-Zadeh, F., Bushouse, H., Wardle, M., Heinke, C., Roberts, D. A., Dowell, C. D., ...
We report the detection of variable emission from Sgr A* in almost all wavelength bands (i.e. centimeter, millimeter, submillimeter, near-IR and X-rays) during a multi-wavelength observing campaign....
Dodds-Eden, K., Porquet, D., Trap, G., Quataert, E., Haubois, X., Gillessen, S., ...
This paper reports measurements of Sgr A* made with NACO in L' -band (3.80 um), Ks-band (2.12 um) and H-band (1.66 um) and with VISIR in N-band (11.88 um) at the ESO VLT, as well as with XMM-Newton...
GRAVITY: microarcsecond astrometry and deep interferometric imaging with the VLT (2009)
Eisenhauer, F., Perrin, G., Brandner, W., Straubmeier, C., Böhm, A., Baumeister, H., ...
Monitoring stellar orbits around the massive black hole in the galactic center (2009)
Gillessen, S., Eisenhauer, F., Trippe, S., Alexander, T., Genzel, R., Martins, F., ...
Evidence for warped disks of young stars in the galactic center (2009)
Bartko, H., Martins, F., Fritz, T. K., Genzel, R., Levin, Y., Perets, H. B., ...
Evidence for Warped Disks of Young Stars in the Galactic Center (2008)
Bartko, H., Martins, F., Fritz, T. K., Genzel, R., Levin, Y., Perets, H. B., ...
The central parsec around the super-massive black hole in the Galactic Center hosts more than 100 young and massive stars. Outside the central cusp (R~1") the majority of these O and Wolf-Rayet (WR)...
Hamaus, N., Paumard, T., Müller, T., Gillessen, S., Eisenhauer, F., Trippe, S., ...
Sagittarius A*, the supermassive compact object at the center of the Galaxy, exhibits outbursts in the near infrared and X-ray domains. These flares are likely due to energetic events very close to...
Monitoring stellar orbits around the Massive Black Hole in the Galactic Center (2008)
Gillessen, S., Eisenhauer, F., Trippe, S., Alexander, T., Genzel, R., Martins, F., ...
We present the results of 16 years of monitoring stellar orbits around the massive black hole in center of the Milky Way using high resolution NIR techniques. This work refines our previous analysis...
Kinematics of the old stellar population at the Galactic Center (2008)
Trippe, S., Gillessen, S., Gerhard, O. E., Bartko, H., Fritz, T. K., Maness, H. L., ...
We aim at a detailed description of the kinematic properties of the old, (several Gyrs) late-type CO-absorption star population among the Galactic centre (GC) cluster stars. We applied AO-assisted,...
Scientific prospects for VLTI in the galactic centre: getting to the Schwarzschild radius (2008)
Paumard, T., Perrin, G., Eckart, A., Genzel, R., Léna, P., Schödel, R., ...
15 years of high precision astrometry in the galactic center (2008)
Gillessen, S., Genzel, R., Eisenhauer, F., Ott, T., Trippe, S., Martins, F.
GRAVITY: microarcsecond astrometry and deep interferometric imaging with the VLTI (2008)
Eisenhauer, F., Perrin, G., Straubmeier, C., Brandner, W., Boehm, A., Cassaing, F., ...
Near-infrared observations of Sagittarius A* (2008)
Trippe, S., Paumard, T., Gillessen, S., Ott, T., Eisenhauer, F., Martins, F., ...
Observing the flares of Sgr A* with the very large telescope interferometer (2008)
Paumard, Thibaut, Müller, T., Genzel, R., Eisenhauer, F., Gillessen, S.
Near-infrared observations of Sagittarius A (2008)
F. Eisenhauer, F. Martins, R. Genzel, S. Gillessen, S. Trippe, T. Ott, ...
We present and discuss recent near infrared observations of Sagittarius A, the supermassive black hole in the centre of our Galaxy. Since 2003 this source has been observed photometrically,...
The galactic center large program (2008)
Haubois, X., Genzel, R., Perrin, G., Gillessen, S., Paumard, T., Dodds-Eden, K., ...
Study of the science capabilities of PRIMA in the galactic center (2008)
Bartko, H., Pfuhl, O., Eisenhauer, F., Genzel, R., Gillessen, S., Rabien, S., ...
GRAVITY: getting to the event horizon of Sgr A* (2008)
Eisenhauer, F., Perrin, G., Brandner, W., Straubmeier, C., Richichi, A., Gillessen, S., ...
Fringe detection laser metrology for differential astrometric stellar interferometers (2008)
Rabien, S., Gillessen, S., Ziegleder, J., Thiel, Markus, Gräter, Alex, Haug, Marcus, ...
Fringe tracking optimization with 4 beams: application to GRAVITY (2008)
Houairi, K., Cassaing, F., Perrin, G., Eisenhauer, F., Brandner, W., Straubmeier, C., ...
Kinematics of the old stellar population at the galactic centre (2008)
Trippe, S., Gillessen, S., Gerhard, O. E., Bartko, H., Fritz, T. K., Maness, H. L., ...
Young stars in the galactic center: One or two disks? (2008)
Bartko, H., Eisenhauer, F., Fritz, T., Genzel, R., Gillessen, S., Martins, F., ...
Massive stars in the galactic center (2008)
Martins, F., Hillier, D. J., Genzel, R., Eisenhauer, F., Ott, T., Gillessen, S., ...
Fringe detection laser metrology for differential astrometric stellar interferometers (2008)
Rabien, S., Gillessen, S., Ziegleder, J., Thiel, Markus, Gräter, Alex, Haug, Marcus, ...
Differential measurements with dual feed stellar interferometers using large baselines can deliver extremely accurate astrometric data. Separating the phase difference measured on the stars from the...
Fringe tracking optimization with 4 beams: application to GRAVITY (2008)
Houairi, K., Cassaing, F., Perrin, G., Eisenhauer, F., Brandner, W., Straubmeier, C., ...
GRAVITY, a VLTI second generation instrument, requires a fringe tracker combining four beams. Its design is driven by the observation of the Galactic Center and implies stringent fringe sensor...
GRAVITY: microarcsecond astrometry and deep interferometric imaging with the VLTI (2008)
Eisenhauer, F., Perrin, G., Straubmeier, C., Brandner, W., Boehm, A., Cassaing, F., ...
We present the adaptive optics assisted, near-infrared VLTI instrument GRAVITY for precision narrow-angle astrometry and interferometric phase referenced imaging of faint objects. With its two fibers...
GRAVITY: getting to the event horizon of Sgr A* (2008)
Eisenhauer, F., Perrin, G., Brandner, W., Straubmeier, C., Richichi, A., Gillessen, S., ...
We present the second-generation VLTI instrument GRAVITY, which currently is in the preliminary design phase. GRAVITY is specifically designed to observe highly relativistic motions of matter close...
Dynamical Properties of z ~ 2 Star-forming Galaxies and a Universal Star Formation Relation (2007)
Bouché, N., Cresci, G., Davies, R., Eisenhauer, F., Förster Schreiber, N. M., Genzel, R., ...
We present the first comparison of the dynamical properties of different samples of z ~ 1.4-3.4 star-forming galaxies from spatially resolved imaging spectroscopy from SINFONI/VLT integral field...
A polarized infrared flare from Sagittarius A* and the signatures of orbiting plasma hotspots (2007)
Trippe, S., Paumard, T., Ott, T., Gillessen, S., Eisenhauer, F., Martins, F., ...
Stellar and wind properties of massive stars in the central parsec of the galaxy (2007)
Martins, F., Genzel, R., Hillier, D. J., Eisenhauer, F., Paumard, T., Gillessen, S., ...
Dynamical properties of z 2 star-forming galaxies and a universal star formation relation (2007)
Bouché, N., Cresci, G., Davies, R., Eisenhauer, F., Förster Schreiber, N. M., Genzel, R., ...
A polarised infrared flare from Sagittarius A* and the signatures of orbiting plasma hotspots (2006)
Trippe, S., Paumard, T., Ott, T., Gillessen, S., Eisenhauer, F., Martins, F., ...
In this article we summarise and discuss the infrared, radio, and X-ray emission from the supermassive black hole in the Galactic Centre, SgrA*. We include new results from near-infrared polarimetric...
GCIRS 16SW: A massive eclipsing binary in the Galactic center (2006)
Martins, F, Trippe, S, Paumard, T, Ott, T, Genzel, R, Rauw, Grégor, ...
We report on the spectroscopic monitoring of GCIRS 16SW, an Ofpe/WN9 star and LBV candidate in the central parsec of the Galaxy. SINFONI observations show strong daily spectroscopic changes in the K...
Schreiber, N. M. Forster, Genzel, R., Lehnert, M. D., Bouche, N., Verma, A., Erb, D. K., ...
We present 0.5" resolution near-IR integral field spectroscopy of the Ha line emission of 14 z~2 UV-selected BM/BX galaxies obtained with SINFONI at ESO/VLT. The mean Ha half-light radius r_1/2 is...
Paumard, T., Genzel, R., Martins, F., Nayakshin, S., Beloborodov, A. M., Levin, Y., ...
We report the definite spectroscopic identification of 41 OB supergiants, giants and main sequence stars in the central parsec of the Galaxy. Detection of their absorption lines have become possible...
Clockwise Stellar Disk and the Dark Mass in the Galactic Center (2006)
Beloborodov, A. M., Levin, Y., Eisenhauer, F., Genzel, R., Paumard, T., Gillessen, S., ...
Two disks of young stars have recently been discovered in the Galactic Center. The disks are rotating in the gravitational field of the central black hole at radii r=0.1-0.3 pc and thus open a new...
The H.E.S.S. survey of the Inner Galaxy in very-high-energy gamma-rays (2006)
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., ...
We report on a survey of the inner part of the Galactic Plane in very high energy gamma-rays, with the H.E.S.S. Cherenkov telescope system. The Galactic Plane between +-30deg in longitude and +-3deg...
GCIRS34W: an irregular variable in the galactic centre (2006)
Trippe, S., Martins, F., Ott, T., Paumard, T., Abuter, R., Eisenhauer, F., ...
Discovery of very-high-energy gamma-rays from the Galactic Centre ridge (2006)
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., ...
The source of Galactic cosmic rays (with energies up to 1015 eV) remains unclear, although it is widely believed that they originate in the shock waves of expanding supernova remnants1, 2. At present...
Evidence for VHE gamma-ray emission from the distant BL Lac PG 1553+113 (2006)
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., ...
The high-frequency peaked BL Lac PG 1553+113 was observed in 2005 with the HESS stereoscopic array of imaging atmospheric-Cherenkov telescopes in Namibia. Using the HESS standard analysis, an excess...
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., ...
The Vela supernova remnant (SNR) is a complex region containing a number of sources of non-thermal radiation. The inner section of this SNR, within 2 degrees of the pulsar PSR B0833-45, has been...
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., ...
We present results from deep observations of the Galactic shell-type supernova remnant (SNR) RX J1713.7-3946 (also known as G347.3-0.5 ) conducted with the complete HESS array in 2004....
A low level of extragalactic background light as revealed by gamma-rays from blazars (2006)
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., ...
The diffuse extragalactic background light consists of the sum of the starlight emitted by galaxies through the history of the Universe, and it could also have an important contribution from the...
Discovery of the two wings of the Kookaburra complex in VHE gamma-rays with H.E.S.S (2006)
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., ...
Aims. Search for Very High Energy gamma-ray emission in the Kookaburra complex through observations with the H.E.S.S. array. Methods. Stereoscopic imaging of Cherenkov light emission of the gamma-ray...
SINFONI data reduction software (2006)
Abuter, R., Schreiber, J., Eisenhauer, F., Ott, T., Horrobin, M., Gillessen, S.
GCIRS 16SW: a massive eclipsing binary in the galactic center (2006)
Martins, F., Trippe, S., Paumard, T., Ott, T., Genzel, R., Rauw, G., ...
GRAVITY - the adaptive optics assisted, two object beam combiner for the VLTI (2006)
Gillessen, S., Perin, G., Brandner, W., Straubmeier, C., Eisenhauer, F., Rabien, S., ...
Stellar orbits around Sgr A* (2006)
Trippe, S., Gillessen, S., Ott, T., Eisenhauer, F., Paumard, T., Martins, F., ...
GRAVITY: the adaptive-optics-assisted two-object beam combiner instrument for the VLTI (2006)
Gillessen, S., Perrin, G., Brandner, W., Straubmeier, C., Eisenhauer, F., Rabien, S., ...
We present the adaptive optics assisted, near-infrared VLTI instrument - GRAVITY - for precision narrow-angle astrometry and interferometric phase referenced imaging of faint objects. Precision...
A New Population of Very High Energy Gamma-Ray Sources in the Milky Way (2005)
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., ...
Very high energy -rays probe the long-standing mystery of the origin of cosmic rays. Produced in the interactions of accelerated particles in astrophysical objects, they can be used to image cosmic...
Discovery of VHE gamma ray from PKS 2005-489 (2005)
Aharonian, Felix, Akhperjanian, A.G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., ...
The high-frequency peaked BL Lac PKS 2005-489 (z=0.071) was observed in 2003 and 2004 with the HESS stereoscopic array of imaging atmospheric-Cherenkov telescopes in Namibia. A signal was detected at...
H.E.S.S. Observations of PKS 2155-304 (2005)
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., ...
The high-frequency peaked BL Lac PKS 2155-304 at redshift z=0.117 has been detected with high significance (~45 ) at energies greater than 160 GeV, using the H.E.S.S. stereoscopic array of imaging...
Search for TeV emission from the region around PSR B1706-44 with the H.E.S.S. experiment (2005)
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., ...
The region around PSR B1706-44 has been observed with the HESS imaging atmospheric Cherenkov telescopes in 2003. No evidence for gamma-ray emission in the TeV range was found at the pulsar position...
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., ...
The Supernova Remnant MSH 15-52 has been observed in very high energy (VHE) gamma-rays using the HESS 4-telescope array located in Namibia. A gamma-ray signal is detected at the 25 sigma level during...
Aharonian, F., Akhperjanian, A. G., Borrel, V., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., ...
We report the detection of TeV -rays from the shell-type supernova remnant RX J0852.0-4622 with data of 3.2 h of live time recorded with HESS in February 2004. An excess of (700 ± 60) events from...
Observations of Mkn 421 in 2004 with HESS at large zenith angles (2005)
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., ...
Mkn 421 was observed during a high flux state for nine nights in April and May 2004 with the fully operational High Energy Stereoscopic System (HESS) in Namibia. The observations were carried out at...
Upper limits to the SN1006 multi-TeV gamma-ray flux from H.E.S.S. observations (2005)
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., ...
Observations of the shell-type supernova remnant SN1006 have been carried out with the HESS system of Cherenkov telescopes during 2003 (18.2 h with two operating telescopes) and 2004 (6.3 h with all...
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., ...
We report the discovery of very-high-energy (VHE) gamma-ray emission of the binary system PSR B1259-63/SS 2883 of a radio pulsar orbiting a massive, luminous Be star in a highly eccentric orbit. The...
Discovery of Very High Energy Gamma Rays Associated with an X-ray Binary (2005)
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., ...
X-ray binaries are composed of a normal star in orbit around a neutron star or stellar-mass black hole. Radio and x-ray observations have led to the presumption that some x-ray binaries called...
SINFONI in the galactic center: young stars and infrared flares in the central light-month (2005)
Eisenhauer, F., Genzel, R., Alexander, T., Abuter, R., Paumard, T., Ott, T., ...
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., ...
We report on a possible association of the recently discovered very high-energy gamma-ray source HESS J1825--137 with the pulsar wind nebula (commonly referred to as G 18.0--0.7) of the 2.1 x 104...
Search for very high energy γ-ray emission from the starburst galaxy NGC 253 with H.E.S.S.
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., ...
We present the result of observations of the nearby starburst galaxy NGC 253 with the H.E.S.S. detector in 2003. We find no evidence for very high gamma-ray emission from this object. Gamma-ray...
Serendipitous discovery of the unidentified extended TeV gamma-ray source HESS J1303-631
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., ...
The serendipitous discovery of an unidentified extended TeV gamma-ray source close to the galactic plane named HESS J1303-631 at a significance of 21 standard deviations is reported. The observations...
Multi-wavelength observations of PKS 2155-304 with H.E.S.S
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., ...
The High Energy Stereoscopic System (H.E.S.S.) has observed the high-frequency peaked BL Lac object PKS2155-304 in 2003 between October 19 and November 26 in Very High Energy (VHE) gamma-rays (E>160...
A search for very high energy gamma-ray emission from the starburst galaxy NGC 253 with H.E.S.S
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., ...
We present the result of 28 hours of observations of the nearby starburst galaxy NGC 253 with the H.E.S.S. detector in 2003. We find no evidence for very high energy gamma-ray emission from this...
Resolving the Extragalactic Background Light with gamma-ray spectra from distant blazars
Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., ...
The diffuse Extragalactic Background Light (EBL) contains unique information about the epochs of formation and the history of evolution of galaxies. Unfortunately, direct measurements are subject to...
Steinbild, S, Mross, K, Frost, A, Morant, R, Gillessen, S, Dittrich, C, ...
Sorafenib is a multi-kinase inhibitor with antiangiogenic and antiproliferative activity. The activity of sorafenib in progressive hormone-refractory prostate cancer (HRPC) patients was investigated...