| Proposal ID | 065491 |
| Title | The iron line variability of NGC2992: a direct probe of AGN central engines |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0654910301 |
| DOI | https://doi.org/10.5270/esa-qkhe3l0 |
| Principal Investigator, PI | Dr Valentina Braito |
| Abstract | We propose a monitoring campaign (8 observation of ~55 ksec each) of the brightSeyfert 1.5 NGC2992, which reveals dramatic X-ray variability. The aim of theproposal is to directly probe how and on what timescale the broad Fe lineresponds to the continuum. The analysis of the previous X-ray observationsunveiled that its X-ray flux varies by a factor of 10 over a year with the broadFe line responding to the continuum. Such behavior is extremely rare and makesNGC2992 a unique laboratory to investigate the central engine of AGN. Theproposed monitoring maximizes the probability of covering as much of the dynamicrange of continuum and Fe line variability as possible. These observations willallow us to obtain the best constraints to date of the Fe line properties for each flux state. |
| Publications |
|
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2010-05-06T20:07:52Z/2010-12-08T17:04:20Z |
| 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 | 2012-01-08T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "NGC2992", "makes ngc2992", "dynamic range", "iron line variability", "xray flux varies", "agn central engines", "central engine", "bright seyfert", "fe line variability", "xray variability", "fe line properties" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Valentina Braito, 2012, 'The iron line variability of NGC2992: a direct probe of AGN central engines', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-qkhe3l0 |