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   51078
   We propose to observe the edge of the galactic ridge at l = 60 deg.
   From the past observations with ASCA, we get an evidence that a softer
   (kT = 0.8 keV) component exists in the Galactic ridge emission in
   addition to the well-known harder (kT = 7 keV) component. This soft
   component requires a Galactic absorption with a column density of N_H =
   0.7*10^22, which implies that it is located at an effective distance of
   2 kps away from us. Then, how far does this soft component extend? What
   is its origin? Is there any relation with the 7 keV hard component?
   Such a soft component has also been discovered in many other spiral
   galaxies, therefore, this would be an our Galaxy version. By observing
   the edge of the Galactic ridge, we will get information about the
   behavior of this soft component.
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