We propose XMM-Newton observations of seven super-Eddington type one quasarsselected from SDSS. A strong correlation between Gamma and Lambda_Edd, has beenwell established in the range 0.01 <Lambda_Edd< 1, however models suggest thatthe correlation saturates at high Lambda_Edd, which has been supported by someobservations. Our proposed observations will form part of a well selected sampleof quasars over a wide range in Lambda_Edd with good X-ray spectral constraintsthat will determine the nature of this relationship in the super-Eddingtonregime. If we find that the relationship does indeed flatten, it will supportmodels of the corona and yield insights into its geometry and physicalcondition.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2017-12-04T10:37:40Z/2018-04-30T11:46:13Z
Version
17.56_20190403_1200
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.
European Space Agency, Dr Murray Brightman, 2019, 'X-ray spectral properties of super-Eddington SDSS quasars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-86l6wgh
