PSR: J0934-5249 B0932-52 Scode: 5010 RAB: 09:32:46.85000 +/- 00:00:00.05995 DECB: -52:36:02.5000 +/- 00:00:00.4992 RAJ: 09:34:28.31063 +/- 00:00:00.05995 DECJ: -52:49:27.1045 +/- 00:00:00.4992 l,b: 275.690 -0.700 P: 1.444771496400000022 +/- 0.000000000300000000 Pdot: 4.653000E-15 +/- 1.100000E-17 Pepoch: 43558. DM: 99.4000 +/- 1.1000 w50: 28.00 ms 19.38 mP s400: 18.00 s1400: 2.00 d,z: 2.90 -0.04 bb model d: 2.90 (model 1) L: 2.18 age: 6.69 Edot: 31.79 B: 12.42

... Printed in U.S.A. DIFFERENCES BETWEEN THE OPTICAL/ULTRAVIOLET SPECTRA OF X-RAY BRIGHT AND X-RAY FAINT QSOs PAUL J. GREEN Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 ; pgreen=cfa.harvard.edu Received 1997 July 29 ; accepted 1997 December 4 ABSTRACT We contrast measurements of composite optical and ultraviolet (UV) spectra constructed from samples of QSOs deпned by their soft X-ray brightness. ... Of the 908 QSOs in the LBQS/RASS sample, 92 are detected in X-rays...