| Name | 080179 |
| Title | A link between X-ray weakness and Eddington ratio in BALQSOs? |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0801790101 |
| DOI | https://doi.org/10.5270/esa-3c6eajk |
| Author | Dr Fabio Vito |
| Description | We found hints of an anti-correlation between observed X-ray weakness and Eddington ratio in a small sample of BALQSOs observed in the X-rays with high- quality black hole mass estimates. We argue that this could be due to intervening obscuration (perhaps due to the presence of a failed wind at the base of the accretion disk, as requested by some model of wind launching in BALQSOs) or to intrinsic (i.e. not due to absorption) X-ray weakness, sometimes associated with rapidly-accreting SMBH. In order to assess if that anti-correlation exists and to test the different possible physical explanations, we propose to observe with XMM-Newton a sample of 8 BALQSOs at z=1.7-1.9, for a total of 147 ks. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2017-05-01T22:57:23Z/2017-07-13T17:30:51Z |
| Version | 17.56_20190403_1200 |
| Mission Description | The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 | 2018-08-01T22:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Fabio Vito, 2018, 080179, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-3c6eajk |