| Name | 009002 |
| Title | XMM Searches for Iron Lines in Low Luminosity AGN: a Test of Accretion Theories |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0090020101 |
| 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 |