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Present Epoch Plus — an X‐ray survey for cosmology
Author(s) -
Jahoda K.
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.2123190159
Subject(s) - sky , epoch (astronomy) , cosmology , physics , astronomy , surface brightness , astrophysics , brightness , galaxy
This paper summarizes some cosmologically interesting measurements which are uniquely possible in the hard X‐ray band and presents a mission concept capable of achieving them. The Present Epoch Plus mission will achieve a surface brightness sensitivity of better than 1% per square degree in the 2–10 keV band, and create a catalog of ∽ 10 6 sources. About 160,000 extragalactic sources are expected to be detected in the 2–10 keV band, providing an all sky survey with nearly uniform selection effects 10 times deeper than existing or planned surveys. The PEP concept can be achieved within the size and budgetary constrraints of a NASA Medium Explorer (MIDEX) mission.