A dataset provided by the European Space Agency

Name 009002
Title XMM Searches for Iron Lines in Low Luminosity AGN: a Test of Accretion Theories


DOI https://doi.org/10.5270/esa-xzscc6v
Author Dr Andrew Ptak
Description We propose to use XMM to observe the nuclei of several nearby galaxies which harbor low luminosity active galactic nuclei. We intend to search for iron lines in the X-ray spectra of these systems, all of which were observed with ASCA and have either a non-detection or a marginal detection of an iron emission line. The detection of iron lines in these galaxies (particularly broad lines) would rule out the ADAF hypothesis and would support a model in which accretion proceeds via a geometrically thin, optically thick, accretion disk. On the other hand, non-detection of iron lines, with the firm upper limits on equivalent widths which XMM can obtain, would strongly support the ADAF hypothesis.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-05-09T04:20:55Z/2001-05-09T08:01:17Z
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 2002-07-25T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2002-07-25T00:00:00Z, 009002, 17.56_20190403_1200. https://doi.org/10.5270/esa-xzscc6v