*************************************************************************
   81711
   Spectral variations during X-ray flares in Seyfert galaxies provide
   crucial information about the emission region and the cause of the time
   variations. To detect many flares and obtain these information, we
   propose long-look observation of Seyfert galaxies NGC 5506 and NGC
   7314, which exhibits rapid time variations and a broad iron line
   profile in the energy spectrum. We will compare observed time
   variations of continuum spectra and iron-line profiles with variations
   expected from some theoretical models explaining the cause of the time
   variations in order to know the cause of the variation. Especially, to
   comfirm spectral hardening during the flare would be a key to solove
   the problem.
 *************************************************************************