BeppoSAX observation of 3C273: broadband spectrum and detection of a low-energy absorption feature
نویسنده
چکیده
We report the results of a 3C273 observation performed during the Science Verification Phase (SVP) of the BeppoSAX satellite. The broad-band spectrum is well represented by a power-law between∼ 1 keV and 200 keV. The spectral slope is flat (Γ ∼ 1.6), with a weak emission line at ∼ 6.4 keV (rest frame) of EW ∼ 30 eV. Below 1 keV, a deviation from a power-law due to an absorption feature plus a soft component is present. This is the first time that a feature in absorption at ∼ 0.5 keV (observer frame) is unambiguously detected in 3C273.
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تاریخ انتشار 1997