Discovery of Red-shifted He-like Iron Absorption Line from Luminous Accreting Neutron Star SMC X-1

Megu Kubota, Hirokazu Odaka, Toru Tamagawa +1

We have analyzed X-ray data of SMC X-1 obtained with \textit{Suzaku}, and discovered a combination of an absorption line and an underlying broadened emission line centered at 6.4 k…