Sky surveys with ASCA - Deep Sky Survey

Yasushi Ogasaka, Tsuneo Kii, Yoshihiro Ueda, Tadayuki Takahashi, Hajime Inoue, Yoshitaka Ishisaki, Koji Ohta, Toru Yamada, Kazou Makishima, Takamitsu Miyaji, Günther Hasinger

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


ASCA Deep Sky Survey (DSS) is aimed to investigate the constituents of the CXB in 2-10 keV band, by faint source survey observations reaching to the source confusion limit of ASCA X-Ray Telescopes. So far, 0.29 deg2 sky regions were systematically studied and about 40% of the CXB intensity was resolved into discrete sources. In this paper, we present the latest results on the number-flux relation (LogN-LogS) and spectrum properties of faint X-ray sources.

Original languageEnglish
Pages (from-to)43-46
Number of pages4
JournalAstronomische Nachrichten
Issue number1-2
Publication statusPublished - 1998


  • Cosmic background radiation
  • X-ray sources

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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