The gravitationally lensed, luminous infrared galaxy IRAS F10214+4724 observed with XMM-Newton
Sanders, D. B.; Vignali, C.; Iwasawa, K.; Evans, A. S.; Trentham, N.
Italy, United States, United Kingdom
Abstract
We report on a short XMM-Newton observation of the gravitationally lensed, luminous infrared galaxy IRAS F10214+4724 at z = 2.3 . A faint X-ray source is detected at 4 σ . The observed 0.5-2 keV (1.7-6.6 keV in the rest-frame) flux is 1.3 ×10-15erg cm - 2s-1 and the spectral slope in the rest-frame 1-10 keV band is Γ∼ 2 . These results agree with those obtained from the Chandra X-ray Observatory, given the large uncertainties in both measurements. While possible evidence for excess emission above 5 keV is seen, we suspect this excess might be either spurious or not related to the infrared galaxy.