A BeppoSAX observation of 3C273: broadband spectrum and detection of a low-energy absorption feature

Details A BeppoSAX observation of 3C273: broadband spectrum and detection of a low-energy absorption feature A BeppoSAX observation of 3C273: broadband spectrum and detection of a low-energy absorption feature

1997-07-07

arxiv.org/abs/astro-ph/9707073v1

Astronomy and Astrophysics

Astrophysics

4 pages. Accepted for publication in A&A (Letters)

Scientific paper

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 (\Gamma ~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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