We report the detection of the first two microlensing candidates from the Wendelstein Calar Alto Pixellensing Project (WeCAPP). Both are detected with a high...
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PublicationThe Wendelstein Calar Alto Pixellensing Project (WeCAPP): First MACHO Candidates
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PublicationThree sub-Jovian-mass microlensing planets: MOA-2022-BLG-563Lb, KMT-2023-BLG-0469Lb, and KMT-2023-BLG-0735Lb
Aims: We analyze the anomalies appearing in the light curves of the three microlensing events MOA-2022-BLG-563, KMT-2023-BLG-0469, and KMT-2023-BLG-0735. The...
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PublicationTime Delay in QSO 0957+561 From 1984-1999 Optical Data
Photometric optical data of QSO 0957+561 covering the period 1984-1999 are analyzed to discern between the two values of the time delay (417 and 424 days)...
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PublicationTime Delay of QSO 0957+561 and Cosmological Implications
We obtain the time delay between the arrival time of the A and B images of the QSO 0957+561. The results of applying two different methods (the discrete cross...
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PublicationToward an Internally Consistent Astronomical Distance Scale
Accurate astronomical distance determination is crucial for all fields in astrophysics, from Galactic to cosmological scales. Despite, or perhaps because of...
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PublicationTwo new free-floating or wide-orbit planets from microlensing
Planet formation theories predict the existence of free-floating planets that have been ejected from their parent systems. Although they emit little or no light...
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PublicationTwo-dimensional Spectroscopy Reveals an Arc of Extended Emission in the Gravitational Lens System Q2237+0305
We present two-dimensional spectroscopy of the gravitational lens system Q2237+0305 (Einstein Cross) obtained with the INTEGRAL fiber system in subarcsecond...
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PublicationUltra-bright CO and [{\rm{C}}\,{\rm{I}}] Emission in a Lensed z = 2.04 Submillimeter Galaxy with Extreme Molecular Gas Properties
We report the very bright detection of cold molecular gas with the IRAM NOEMA interferometer of the strongly lensed source WISE J132934.18+224327.3 at z = 2.04...
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TalkVery High Energy emission at the Cosmic Gamma Ray Horizon: a MAGIC discovery happened thanks to gravitational lensing
The Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) telescopes reported the discovery of the most distant gamma-ray source ever observed at very high...