| Proposal ID | 040020 |
| Title | Revealing the nature of the extreme blueshifted iron line profile in PG1402+261 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0400200101 |
| DOI | https://doi.org/10.5270/esa-ntlmtkh |
| Principal Investigator, PI | Dr James Reeves |
| Abstract | We propose to observe the NLS1 PG 1402+261 (at z=0.164). A short 9ks observationrevealed an unusually strong (EW=2keV) and very broad Fe K emission line. Theline centroid energy at 7.3 keV appears blue-shifted with respect to the Fe Kaband, while the blue-wing of the line extends to 9 keV. The line profile can befitted with reflection from a disk around a Kerr black hole, but requires aninclination in excess of 60 degrees, inconsistent with AGN unified models.Alternatively the spectrum may be explained by a large column density, highionization absorber from a powerful outflow. We propose for 2x50ks XMM-Newtonobservations to distinguish between the disk reflection and outflow scenarios. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-12-21T18:46:38Z/2006-12-24T09:28:05Z |
| Version | 21.51_20241115_1113 |
| Mission Description | The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2008-01-30T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "line profile", "fe ka band", "broad fe", "XMM-Newton", "column density", "ionization absorber", "nls1 pg 1402", "agn unified models", "XMM", "kerr black hole", "line centroid energy", "outflow scenarios", "powerful outflow", "blue wing", "emission line", "disk reflection", "2x50 xmm newton", "line extends" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr James Reeves, 2008, 'Revealing the nature of the extreme blueshifted iron line profile in PG1402+261', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-ntlmtkh |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |