????!???????X????????????????

????:??????:????????

“?????,?????????????”,??????,???????17?????,??“??????????”(?????EP)?????????????????????X?????,?????????????????X????????,??????????X????,??????EP??“????”X???(FXT)?????,???????????X??

EP????????(???)??,??????????????,?????????????????????????????????????????????“????”????EP?????????,????????????????????????

“??”??????????????????????????????????,????????????X?????????X?????????????,????X???,???X????????????????,??????????????????????????????????,???????X????????????????,????????????????,?????X??,?????

?????,????????????357400??,??,?????14%,???????????,????“?????????????????”,????????,????,????????????????????????,??????????X???,??????????????????,????X???

????,??????,???ROSAT???Chandra,???“??????”??????X??????????,?????X???,?????X???????,“?”???????????????,?????????????“??????????”?????,“??????”????????X?????????????,???????????????????????????????????????????????????????????????

????????????????????,??????EP????,????X?????????EP????????“???”???X??,????????????

(????? ?? ??? ?????) ????:????