A possible ultra strong and broad Fe Ka emission line in Seyfert 2 galaxy IRAS 00521-7054

摘要: We present XMM-Newton spectra of the Seyfert 2 Galaxy IRAS 00521-7054. A strong feature at ~6 keV (observer's frame) can be formally fitted with a (EW=1.3+-0.3 in rest and broad Fe Ka line, extending down to 3 keV. The underlying X-ray continuum could an absorbed powerlaw (with Gamma = 1.8+-0.2 N_H 5.9 x 10^22 cm^-2) plus soft component. If due relativistically smeared reflection by illuminated accretion disk, spin supermassive black hole is constrained 0.97^+0.03_-0.13 (errors 90% confidence level for one interesting parameter), system viewed inclination angle 37+-4 degree. This would first type AGN reported red wing detected which demands fast rotating SMBH. unusually large EW suggest that light bending effect this source. Alternatively, dual absorber model (though global chi^2 higher ~ 6 283 d.o.f) N_H1 7.0 cm^-2 covering 100% source, N_H2 21.7 71%, does not require extra line.