Cosmological implications of galaxy clusters in X-ray, millimeter, and submillimeter bands

Yasushi Suto, Tetsu Kitayama, Eiichiro Komatsu, Makoto Hattori, Ryohei Kawabe, Hiroshi Matsuo, Sabine Schindler, Kohji Yoshikawa

Research output: Contribution to journalArticlepeer-review


Cosmological implications of clusters of galaxies are discussed with particular attention to their importance in probing the cosmological parameters. More specifically we compute the number counts of clusters of galaxies, Log N - Log S relation, in X-ray and submm bands on the basis of the Press-Schechter theory. As an important step toward breaking the degeneracy among the viable cosmological models, we observed the most luminous X-ray cluster RXJ1347-1145 in three bands (21 and 43 GHz in the Nobeyama Radio Observatory, Japan, and 350 GHz in the J. C. Maxwell telescope at Mauna Kea, Hawaii). We report on the preliminary results which are in good agreement with the profile of the Sunayev - Zel'dovich effect predicted on the basis of the previous X-ray observation of the cluster.

Original languageEnglish
Pages (from-to)771-780
Number of pages10
JournalAdvances in Space Research
Issue number3-4
Publication statusPublished - 2000

ASJC Scopus subject areas

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences(all)


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