803 citations · 4.7k across the 42 of their papers we have counts for
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astro-ph1998★ 44 cited
The ROSAT BRIGHT survey: I. Identification of an AGN sample with hard ROSAT X-ray spectra
J. -U. Fischer, G. Hasinger, A. D. Schwope +5
The ROSAT Bright Survey (RBS) aims to completely optically identify the more than 2000 brightest sources detected in the ROSAT all-sky survey at galactic latitudes |b| > 30 degr (e…
astro-ph1998
Nature of Hard X-ray Source from Optical Identification of the ASCA Large Sky Survey
M. Akiyama, K. Ohta, T. Yamada +6
We present results of optical identification of the ASCA Large Sky Survey. X-ray sources which have hard X-ray spectra were identified with type-2 AGN at redshifts smaller than 0.5…