Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apjs...61..353s&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 61, June 1986, p. 353-356. Navy-supported research.
Astronomy and Astrophysics
Astronomy
2
Heao 1, X Ray Sources, Data Acquisition, Data Reduction, Milky Way Galaxy, Sky Surveys (Astronomy)
Scientific paper
A 314 square degree region of sky at high galactic latitude was mapped in 0.5-20 keV X-rays using summed data from the HEAO A-1 experiment. 21 sources are detected above a 5 sigma threshold corresponding to a limiting flux of about 0.2 UFU. This limit is at a decade intermediate to those achieved in the full-sky surveys, Uhuru, Ariel 5, and the HEAO A-2 experiment, and to those achieved in the Einstein partial-sky surveys. The HEAO A-1 detectors also complement these other instruments in terms of spectral response characteristics. A table of source intensities and positional error boxes for the 21 source detections is presented. A graphical representation of the positional error boxes is also presented. Identifications for 14 sources are proposed. A number-flux curve representing all high galactic latitude X-ray sources detected with HEAO A-1 has been constructed. The number-flux curve appears to be consistent with d log N/d log S = -1.5.
Matilsky Terry
Shrader Chris R.
Wood Kent S.
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