@article{Wambsganss2001,
  author    = {Wambsganß, Joachim},
  title     = {Gravitational Lensing : a universal astrophysical tool},
  year      = {2001},
  abstract  = {In the roughly 20 years of its existence as an observational science, gravitational lensing has established itself as a valuable tool in many astrophysical fields. In the introduction of this review we briefly present the basics of lensing. Then it is shown that the two propagation effects, lensing and scintillation, have a number of properties in common. In the main part various lensing phenomena are discussed with emphasis on recent observations.},
  language  = {en}
}
@article{Wambsganss2001,
  author    = {Wambsganß, Joachim},
  title     = {Microlensing of Quasars},
  year      = {2001},
  abstract  = {Microlens-induced variability in multiple quasars can be used to study two cosmological issues of great interest, the size and brightness profile of quasars on one hand, and the distribution of compact (dark) matter along the line of sight on the other. Here a summary is given of recent theoretical progress as well as observational evidence for quasar microlensing, plus a discussion of desired observations and required theoretical studies.},
  language  = {en}
}
@article{Wambsganss2001,
  author    = {Wambsganß, Joachim},
  title     = {Gravity's kaleidoscope : four consequences of gravitational light deflection},
  year      = {2001},
  language  = {en}
}
@article{Wambsganss2001,
  author    = {Wambsganß, Joachim},
  title     = {Quasar Microlensing},
  isbn      = {1-583-81074-9},
  year      = {2001},
  language  = {en}
}
@article{Wambsganss2001,
  author    = {Wambsganß, Joachim},
  title     = {Cosmological microlensing},
  isbn      = {1-583-81076-5},
  year      = {2001},
  language  = {en}
}
@article{Wambsganss2001,
  author    = {Wambsganß, Joachim},
  title     = {Gravitational lensing as a universal astrophysical tool},
  year      = {2001},
  language  = {en}
}
@article{Wambsganss2001,
  author    = {Wambsganß, Joachim},
  title     = {Gravitational lensing as a universal astrophysical tool},
  isbn      = {1-563-96986-6},
  year      = {2001},
  language  = {en}
}
@article{SchmidtWambsganssPenetal.2001,
  author    = {Schmidt, Robert W. and Wambsganß, Joachim and Pen, U.-L. and Turner, E. L.},
  title     = {APO monitoring of Q2237+0305 in 1995-97 : evidence for microlensing},
  isbn      = {1-583-81074-9},
  year      = {2001},
  language  = {en}
}
@article{SchindlerCastilloMoralesDeFilippisetal.2001,
  author    = {Schindler, Sabine and Castillo-Morales, A. and De Filippis, E. and Schwope, A. D. and Wambsganß, Joachim},
  title     = {Discovery of depressions in the X-ray emission of the distant galaxy cluster RBS797 in a CHANDRA observation},
  year      = {2001},
  abstract  = {We present CHANDRA observations of the X-ray luminous, distant galaxy cluster RBS797 at z=0.35. In the central region the X-ray emission shows two pronounced X-ray minima, which are located opposite to each other with respect to the cluster centre. These depressions suggest an interaction between the central radio galaxy and the intra-cluster medium, which would be the first detection in such a distant cluster. The minima are symmetric relative to the cluster centre and very deep compared to similar features found in a few other nearby clusters. A spectral and morphological analysis of the overall cluster emission shows that RBS797 is a hot cluster (T=7.7+1.2-1.0 keV) with a total mass of Mtot(r500)= 6.5+1.6-1.2 *E14Msun.},
  language  = {en}
}
@article{PugaAlcaldeBarrenaetal.2001,
  author    = {Puga, E. and Alcalde, D. and Barrena, R. and Mediavilla, E. and Motta, V. and Munoz, J. A. and Oscoz, Alejandro and Serra-Ricart, M. and Gil-Merino, Rodrigo and Goicoechea, Luis Julian and Lewis, G. f and Libbrecht, C. and Moreau, O. and Surdej, J. and Wambsganß, Joachim},
  title     = {Daily monitoring of the gravitational lens QSO 2237+0305 at the Nordic Optical Telescope},
  isbn      = {0-7923-6974-2},
  year      = {2001},
  language  = {en}
}