| Proposal ID | 055471 |
| Title | Deep Minimum States of AGNs |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0554710101 |
| DOI | https://doi.org/10.5270/esa-hxw3qcc |
| Principal Investigator, PI | Dr Norbert Schartel |
| Abstract | The deep minimum state of AGNs is characterized by a strongly suppressed or eventotal absence of the primary continuum. As the continuum disappears weakspectral features like relativistic- ally broad iron lines or narrow softX-ray emission lines become highly significant and their parameters can bedetermined with high accuracy. Therefore deep minimum states offer uniquepossibilities to constrain the physics of the different X-ray emissionmechanisms in the very cores of AGN, including the immediate vicinity of thesupermassive black holes. Applying our experience gained in spring 2007 with asuccessful trigger of a 200ks-observation, we propose long observations of AGNsin deep minimum state triggered based on Swift and XMM-Newton slews observations. |
| Publications |
|
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2009-05-03T05:04:05Z/2011-01-13T21:22:08Z |
| 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 | 2012-01-27T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "xray emission mechanisms", "deep minimum", "total absence", "supermassive black holes", "XMM-Newton", "experience gained", "successful trigger", "XMM", "primary continuum", "xmm newton slews", "spring 2007" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Norbert Schartel, 2012, 'Deep Minimum States of AGNs', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-hxw3qcc |