A dataset provided by the European Space Agency

Name 055471
Title Deep Minimum States of AGNs


DOI https://doi.org/10.5270/esa-hxw3qcc
Author Dr Norbert Schartel
Description The deep minimum state of AGNs is characterized by a strongly suppressed or even total absence of the primary continuum. As the continuum disappears weak spectral features like relativistic- ally broad iron lines or "narrow" soft X-ray emission lines become highly significant and their parameters can be determined with high accuracy. Therefore deep minimum states offer unique possibilities to constrain the physics of the different X-ray emission mechanisms in the very cores of AGN, including the immediate vicinity of the supermassive black holes. Applying our experience gained in spring 2007 with a successful trigger of a 200ks-observation, we propose long observations of AGNs in deep minimum state triggered based on Swift and XMM-Newton slews observations.
Publication No observations found associated with the current proposal
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 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 2012-01-27T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2012-01-27T00:00:00Z, 055471, 17.56_20190403_1200. https://doi.org/10.5270/esa-hxw3qcc