Volume 432, Number 3, March IV 2005
|Page(s)||835 - 839|
|Published online||07 March 2005|
The XMM-Newton spectrum of the high-z optically-obscured QSO RX J1343.4+0001: a classic radio quiet QSO*
XMM-Newton Science Operations Centre (ESAC), Apartado 50727, 28080 Madrid, Spain e-mail: firstname.lastname@example.org
2 IASF/CNR, via Piero Gobetti 101, 40129 Bologna, Italy
Accepted: 10 November 2004
We present a 30 ks XMM-Newton observation of the type II radio quiet quasar RX J1343.4+0001. These data provide the first good quality X-ray spectrum for this object. We measured a continuum slope with only an upper limit on the column density of the absorbing material of 1022 cm-2 as well as an Fe Kα emission line at the 3σ confidence level. We do not find therefore a highly absorbed object nor a truly flat spectrum as suggested on the basis of previous less sensitive ROSAT and ASCA measurements. The upper limit is fully consistent with the optical extinction inferred from IR observations. The Fe Kα line is consistent with fluorescence from neutral iron and, noteworthy, is one of the most distant observed so far. The X-ray spectral properties of RX J1343.4+0001 agree well with the steep continuum slope () being independent of increasing redshift and luminosity as inferred by X-ray studies of large samples of RQ QSOs.
Key words: galaxies: individual: RX J1343.4+0001 / galaxies: active / galaxies: quasars: general / X-ray: galaxies
© ESO, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.