A dataset provided by the European Space Agency

Name 030560
Title Changing type Seyferts and the AGN unified model


DOI https://doi.org/10.5270/esa-b2nvckj
Author Prof Xavier Barcons
Description In AO-3 we started a quasi-simultaneous X-ray-optical spectroscopy observation programme of changing type Seyfert galaxies, with the aim of investigating the origin of the apparent X-ray-optical type mismatches seen in some AGN. We use these type-changing AGN to test whether this mismatch is caused by non-simultaneity between the X-ray and optical observations or it is due to intrinsic properties of the Broad Line Region, as suggested by our previous work. In this proposal we request XMM-Newton observations of a sample of 5 targets (in addition to that already performed in AO-3). Quasi-simultaneous and delayed optical spectroscopy of these targets will also be obtained from the ground.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2005-10-27T00:31:37Z/2006-06-14T21:09:56Z
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 2007-07-01T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2007-07-01T00:00:00Z, 030560, 17.56_20190403_1200. https://doi.org/10.5270/esa-b2nvckj