The High-Velocity Outflow of PG 1211+143 May Not Be That Fast
Abstract
We analyze the X-ray spectrum of the quasar PG 1211+143 observed with the CCD and grating spectrometers on board XMM-Newton. Using an ion-by-ion fitting model, we find an outflow component of about 3000 km s-1, which includes absorption lines of K and L shell ions of the astrophysically abundant elements. We also identify and include in our model broad (FWHM=6000 km s-1) emission lines from H-like ions of C, N, O, and Ne, and He-like ions of O, Ne, and Mg. The outflow velocity we find is an alternative interpretation of the data and is in contrast with the ultra high velocity of ~24,000 km s-1 reported previously for this object. Nevertheless, we cannot completely rule out the presence of a high-velocity component due to the poor signal-to-noise ratio of the data.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- January 2006
- DOI:
- 10.1086/498126
- arXiv:
- arXiv:astro-ph/0509562
- Bibcode:
- 2006ApJ...636..674K
- Keywords:
-
- Galaxies: Active;
- Galaxies: Individual: Alphanumeric: PG 1211+143;
- Galaxies: Nuclei;
- Galaxies: Quasars: General;
- Techniques: Spectroscopic;
- X-Rays: Galaxies;
- Astrophysics
- E-Print:
- 7 pages, 2 figures, emulateapj, accepted for publication in The Astrophysical Journal