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Sky surveys with ASCA — Large Sky Survey
Author(s) -
Ueda Y.,
Takahashi T.,
Inoue H.,
Tsuru T.,
Sakano M.,
Ohta K.,
Akiyama M.,
Ishisaki Y.,
Ogasaka Y.,
Makishima K.,
Yamada T.
Publication year - 1998
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2123190123
Subject(s) - sky , physics , astrophysics , detector , satellite , astronomy , energy (signal processing) , optics , quantum mechanics
We have carried out the first systematic wide‐area survey around a Galactic pole region with the ASCA satellite in the 0.7–10 keV energy band (Large Sky Survey; LSS). The observed area amounts to 7 deg 2 . To make the best use of ASCA capability, we have developed a new source‐detection method where the complicated detector responses are fully taken into account. Applying this method to the entire LSS data independently in three energy bands (0.7–2 keV, 2–10 keV, and 0.7‐7 keV), we detected 104 sources in total (4.5 σ detection). The Log N ‐ Log S relation and spectral properties of faint sources are presented.