XMM-Newton first X-ray detection of the LoBAL quasar PG 1700+518

Details XMM-Newton first X-ray detection of the LoBAL quasar PG 1700+518 XMM-Newton first X-ray detection of the LoBAL quasar PG 1700+518

2011-04-11

arxiv.org/abs/1104.2003v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Accepted for publication in MNRAS; 7 pages, 5 figures, 2 tables

Scientific paper

We report the first high-energy detection of PG 1700+518, a well-known low-ionization broad absorption line quasar (QSO). Due to previous X-ray non-detection, it was classified as soft X-ray weak QSO. We observed PG 1700+518 with XMM-Newton for about 60 ksec divided in three exposures. The spectrum below 2 keV is very steep, Gamma ~ 2.4-3.8, while at higher energies the extremely flat emission (photon index Gamma ~ 0.15, when modelled with a power law) suggests the presence of strong absorption (NH,pl ~ 2\times10^23 cm-2, Gamma fixed to 1.8), or a reflection-dominated continuum. The broad-band flux is consistent with previous non-detection. Simultaneous EPIC and OM data confirm its X-ray weakness (alpha_ox = -2.2). The level of obscuration derived from the X-ray spectra of PG 1700+518 cannot explain its soft X-ray nuclear weakness unless a column density of NH >~ 2\times10^24 cm-2 is present.

Affiliated with

Also associated with

No associations

Rating

XMM-Newton first X-ray detection of the LoBAL quasar PG 1700+518 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with XMM-Newton first X-ray detection of the LoBAL quasar PG 1700+518, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and XMM-Newton first X-ray detection of the LoBAL quasar PG 1700+518 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-58919