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...
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...
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...
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)...
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,...
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...
Study of the Science Capabilities of PRIMA in the Galactic Center (2008)
Bartko, H., Pfuhl, O., Eisenhauer, F., Genzel, R., Gillessen, S., Rabien, S., ...
The Phase-Referenced Imaging and Micro-arcsecond Astrometry (PRIMA) facility is scheduled for installation in the Very Large Telescope Interferometer observatory in Paranal, Chile, in the second half...
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., ...
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., ...
J. Albert, E. Aliu, H. Anderhub, P. Antoranz, C. Baixeras, ...
Journal article
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...
Tescaro, D., Bartko, H., Galante, N., Goebel, F., Jogler, T., Mirzoyan, R., ...
In February 2007 the MAGIC Air Cherenkov Telescope for gamma-ray astronomy was fully upgraded with an ultra fast 2 GSamples/s digitization system. Since the Cherenkov light flashes are very short, a...
Gamma-Ray Emission from PWNe Interacting with Molecular Clouds (2007)
We consider a situation in which a pulsar is formed inside or close to a high density region of a molecular cloud. Right after birth, the pulsar was very active and accelerated hadrons and leptons to...
Science with the new generation high energy gamma- ray experiments (2007)
Alvarez, M., D'Armiento, D., Agnetta, G., Alberdi, A., Antonelli, A., Argan, A., ...
This Conference is the fifth of a series of Workshops on High Energy Gamma- ray Experiments, following the Conferences held in Perugia 2003, Bari 2004, Cividale del Friuli 2005, Elba Island 2006....
Gamma-Ray Emission from PWNe Interacting with Molecular Clouds (2007)
We consider a situation in which a pulsar (and its nebula) is formed inside or close to a high density regions of a molecular cloud. We apply a recent model for the gamma radiation of pulsar wind...
The MAGIC Project: Contributions to ICRC 2007 (2007)
Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Baixeras, C., ...
The MAGIC Project: Contributions to ICRC 2007, Merida, Mexico. Contents pages for the Contribution on behalf of the MAGIC Collaboration to the 30th ICRC that took place in July 2007 in Merida,...
Tescaro, D., Bartko, H., Galante, N., Goebel, F., Jogler, T., Mirzoyan, R., ...
In February 2007 the MAGIC Air Cherenkov Telescope for gamma-ray astronomy was fully upgraded with an ultra fast 2 GSamples/s digitization system. Since the Cherenkov light flashes are very short, a...
Albert, J, Aliu, E, Anderhub, H, Antonelli, L A, Antoranz, P, Backes, M, ...
We use the timing of photons observed by the MAGIC gamma-ray telescope during a flare of the active galaxy Markarian 501 to probe a vacuum refractive index ~ 1-(E/M_QGn)^n, n = 1,2, that might be...
Observation of Galactic Sources of Very High Energy Gamma-Rays with the MAGIC Telescope (2007)
Bartko, H., Collaboration, For The MAGIC
The MAGIC telescope with its 17m diameter mirror is today the largest operating single-dish Imaging Air Cherenkov Telescope (IACT). It is located on the Canary Island La Palma, at an altitude of...
Comments on the Unified approach to the construction of Classical confidence intervals (2007)
Wittek, W., Bartko, H., Galante, N., Schweizer, T.
The paper comments on properties of the so-called "Unified approach to the construction of classical confidence intervals", in which confidence intervals are computed in a Neyman construction using...
Cojocaru, C., Pinfold, J., Soukup, J., Vincter, M., Datskov, V., Fedorov, A., ...
A full azimuthal phi-wedge of the ATLAS liquid argon end-cap calorimeter has been exposed to beams of electrons, muons and pions in the energy range 6 GeV
MAGIC upper limits on high energy emission from GRBs (2007)
Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Baixeras, C., ...
The fast repositioning system of the MAGIC Telescope has allowed during its first data cycle, between 2005 and the beginning of year 2006, observing nine different GRBs as possible sources of very...
MAGIC upper limits on the very high energy emission from GRBs (2006)
Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Baixeras, C., ...
The fast repositioning system of the MAGIC Telescope has allowed during its first data cycle, between 2005 and the beginning of year 2006, observing nine different GRBs as possible sources of very...
Discovery of VHE gamma-ray emission from 1ES1218+30.4 (2006)
Albert, MAGIC Collaboration: J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., ...
The MAGIC collaboration has studied the high peaked BL-Lac object 1ES1218+30.4 at a redshift z = 0.182, using the MAGIC imaging air Cherenkov telescope located on the Canary island of La Palma. A...
Flux upper limit of gamma-ray emission by GRB050713a from MAGIC Telescope observations (2006)
Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., ...
The long-duration GRB050713a was observed by the MAGIC Telescope, 40 seconds after the burst onset, and followed up for 37 minutes, until twilight. The observation, triggered by a SWIFT alert,...
Flux upper limit of gamma-ray emission by GRB050713a from MAGIC Telescope observations (2006)
Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., ...
The long-duration GRB050713a was observed by the MAGIC Telescope, 40 seconds after the burst onset, and followed up for 37 minutes, until twilight. The observation, triggered by a SWIFT alert,...
Cojocaru, C, Pinfold, J L, Soukup, J, Vincter, M G, Datskov, V I, Fedorov, A, ...
A full azimuthal phi-wedge of the ATLAS liquid argon end-cap calorimeter has been exposed to beams of electrons, muons and pions in the energy range 6 GeV
FADC Pulse Reconstruction Using a Digital Filter for the MAGIC Telescope (2005)
Bartko, H., Gaug, M., Moralejo, A., Sidro, N.
Presently, the MAGIC telescope uses a 300 MHz FADC system to sample the transmitted and shaped signals from the captured Cherenkov light of air showers. We describe a method of Digital Filtering of...
Bartko, H., Goebel, F., Mirzoyan, R., Pimpl, W., Teshima, M.
Ground-based Atmospheric Air Cherenkov Telescopes (ACTs) are successfully used to observe very high energy (VHE) gamma rays from celestial objects. The light of the night sky (LONS) is a strong...
Towards Dark Matter Searches with the MAGIC Telescope (2005)
Bartko, H., Biland, A., Bisesi, E., Els\"asser, D., Flix, P., H\"afliger, P., ...
MAGIC is a 17m diameter Imaging Air Cherenkov Telescope installed on the Canary Island La Palma. The telescope is designed for gamma-ray astronomy in the 30 GeV to 30 TeV energy range. Particle...
Bartko, H., Goebel, F., Mirzoyan, R., Pimpl, W., Teshima, M.
Ground-based Atmospheric Air Cherenkov Telescopes (ACTs) are successfully used to observe very high energy (VHE) gamma rays from celestial objects. The light of the night sky (LONS) is a strong...
Search for Gamma Rays from the Galactic Center with the MAGIC Telescope (2005)
Bartko, H., Biland, A., Bisesi, E., Commichau, S., Flix, P., Lorenz, E., ...
The Galactic Center (GC) is a very interesting region for gamma ray astronomy. Various possibilities for the production of very high energy (VHE) gamma rays near the GC are discussed in the...
Observations of VHE Gamma Radiation from HESS J 1813-178 with the MAGIC Telescope (2005)
Bartko, H., Bretz, T., Bednarek, W., Cortina, J., Goebel, F., Gaug, M., ...
Recently, gamma radiation above a few hundred GeV has been detected from eight new sources in the Galactic Plane by the HESS collaboration. The source HESS J 1813-178 (HESS1813) has caused particular...
Cojocaru, C., Pinfold, J., Soukup, J., Vincter, M., Datskov, V., Fedorov, A., ...
A full azimuthal phi-wedge of the ATLAS liquid argon end-cap calorimeter has been exposed to beams of electrons, muons and pions in the energy range 6 GeV
Cojocaru,C., Pinfold,J., Soukup,J., Vincter,M., Datskov,V., Fedorov,A., ...
A full azimuthal phi-wedge of the ATLAS liquid argon end-cap calorimeter has been exposed to beams of electrons, muons and pions in the energy range 6 GeV
Cojocaru, C., Pinfold, J., Soukup, J., Vincter, M., Datskov, V., Fedorov, A., ...
A full azimuthal phi-wedge of the ATLAS liquid argon end-cap calorimeter has been exposed to beams of electrons, muons and pions in the energy range 6 GeV
Bartko, H., Goebel, F., Mirzoyan, R., Pimpl, W., Teshima, M.
Ground-based Atmospheric Air Cherenkov Telescopes (ACTs) are successfully used to observe very high energy (VHE) gamma rays from celestial objects. The light of the night sky (LONS) is a strong...
FADC Pulse Reconstruction Using a Digital Filter for the MAGIC Telescope
Bartko, H., Gaug, M., Moralejo, A., Sidro, N.
Presently, the MAGIC telescope uses a 300 MHz FADC system to sample the transmitted and shaped signals from the captured Cherenkov light of air showers. We describe a method of Digital Filtering of...
Calibration of the MAGIC Telescope
Gaug, M., Bartko, H., Cortina, J., Rico, J.
The MAGIC Telescope has a 577 pixel photo-multiplier tube (PMT) camera which requires precise and regular calibration over a large dynamic range. A system for the optical calibration consisting of a...
Bartko, H., Goebel, F., Mirzoyan, R., Pimpl, W., Teshima, M.
Ground-based Atmospheric Air Cherenkov Telescopes (ACTs) are successfully used to observe very high energy (VHE) gamma rays from celestial objects. The light of the night sky (LONS) is a strong...
Observations of VHE Gamma-Ray Sources with the MAGIC Telescope
The MAGIC Collaboration, Bartko, H.
The MAGIC telescope with its 17m diameter mirror is today the largest operating single-dish Imaging AIr Cherenkov Telescope (IACT). It is located on the Canary Island La Palma, at an altitude of...
Gamma-Ray Emission from PWNe Interacting with Molecular Clouds
We consider a situation in which a pulsar is formed inside or close to a high density region of a molecular cloud. Right after birth, the pulsar was very active and accelerated hadrons and leptons to...