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   PR # 42168
   The blazar, PKS 1510-089, is a high polarization quasar at a redshift
   of 0.361. It is highly variable in the optical and radio continuum
   and polarized flux, and has a radio jet indicating beaming. Beamed
   high energy gamma-ray emission is also implied by its detection by
   EGRET. Its EXOSAT X-ray spectrum had shown a remarkably intense line
   emission at 6.4 keV (rest frame) presumably due to Fe fluorescence
   from an isotropically emitting source of X-rays. A 20 ksec ASCA
   observation will enable spectral index of its X-ray continuum to be
   measured accurately, and determine the line energy and strength thus
   providing clues to its origin. The study will help in quantifying the
   degree of beaming and the presence of matter around the central
   engine of this intriguing source.
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