
| Proposal ID | 074096 | 
| Title | Early evolution of AGN X-ray coronae and the X-ray, BLR, disc-wind connection | 
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0740960101 | 
| DOI | https://doi.org/10.5270/esa-2ij9pzm | 
| Principal Investigator, PI | Dr Giovanni Miniutti | 
| Abstract | We request a quasi-simultaneous XMM-Newton and HST/STIS observation of GSN 069,a high-Eddington ratio true/unabsorbed Seyfert 2 galaxy candidate withultra-soft X-ray spectrum. From our study of previous X-ray/optical spectra andof UV photometric data, we infer that the lack of BLR in this peculiar objectmay be attributed to ether (i) the lack of hard X-ray emission or (ii) anevolutionary scenario in which the BLR are just forming. Recent Swift pointingshave revealed the emergence of hard X-rays in GSN 069, making the proposedobservation highly timely. GSN 069 may represent a true Rosetta stone with whichto follow the formation and early evolution of the X-ray corona and to study theconnection between X-rays and the BLR/disc-wind system. | 
| Publications | 
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 | 
| Temporal Coverage | 2014-12-05T00:15:10Z/2014-12-06T02:40:10Z | 
| 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. | 
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk | 
| Date Published | 2016-01-09T23:00:00Z | 
| Last Update | 2025-08-04 | 
| Keywords | "hard xray emission", "agn xray coronae", "unabsorbed seyfert", "disc wind system", "XMM", "gsn 069", "evolutionary scenario", "hard xray", "xray corona", "swift pointings", "xmm newton", "optical spectra", "disc wind connection", "HST", "XMM-Newton", "eddington ratio", "galaxy candidate", "rosetta stone", "uv photometric data" | 
| Publisher And Registrant | European Space Agency | 
| Credit Guidelines | European Space Agency, Dr Giovanni Miniutti, 2016, 'Early evolution of AGN X-ray coronae and the X-ray, BLR, disc-wind connection', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-2ij9pzm |