Brief Summary of Each Supplement
Progress of Theoretical Physics Supplement No. 133
Gravitational Lensing and the High-Redshift Universe
Edited by Kenji Tomita and Toshifumi Futamase
Investigation on gravitational lensing phenomena and the evolution and
spatial distribution of high-redshift objects occupies the most
active part of various fields in cosmology and astrophysics.
Gravitational lensing gives us many informations
about the evolution and structure of galaxies and clusters,
when we analyze multi-images of quasars and deformed images (such as
arcs, arclets and rings) of galaxies caused by their lens objects,
and brings also valuable informations about dark matter since gravitation
feels the existence of invisible matter. Moreover they can amplify the
luminosity of dark objects and play a role of a kind of telescopes.
In recent years the microlensing phenomena due to stellar lens objects in
Magellanic clouds and in the bulge in our Galaxy have been discovered
and the successive observational and theoretical approaches to them have
brought rapid progress in the studies on the structure of our Galaxy
and the puzzling lens objects. On the other hand, the evolution and
clustering of high-redshift objects have been clarified by recent
observational studies of galaxies and clusters by
optical, radio and X-ray telescopes and have led to wider and deeper
understanding of galaxy formation theory.
This volume consists of nine review papers on the above topics, which were
written by main talkers of the workshops (in 1997 and 1998) in Yukawa
Institute for Theoretical Physics, based on their lectures and more recent
research cotributions. It is therefore highly appropriate for students
coming into cosmology and astrophysics, and also it gives good reviews
of the present status and future prospects at a level accessible to
the general researchers.
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