| Proposal ID | 010914 |
| Title | Spectral Variability of Seyfert Galaxies |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0109141001 |
| DOI | https://doi.org/10.5270/esa-0u4md6o |
| Principal Investigator, PI | Prof Keith Mason |
| Abstract | GT- We wish to perform long pointings (150 ksec) with XMM attwo bright Seyfert 1 galaxies, NGC4051 and Mrk766, in order to measure i) thepower spectrum of flux variations down to the shortest scales, ii) the crosscorrelation of variations at medium X-ray, soft X-ray, UV and opticalwavelengths, iii) changes in the spectral shape of the X-ray continuum iv) variations of spectral features such as absorption from partially ionized gasand the fluorescent Fe emission line(s) in response to continuum variations. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2001-05-16T10:30:57Z/2001-05-21T20:38:40Z |
| Version | PPS_NOT_AVAILABLE |
| 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 | 2003-05-06T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "medium xray", "cross correlation", "flux variations", "shortest scales", "spectral variability", "spectral shape", "continuum variations", "soft xray", "NGC4051", "XMM", "power spectrum", "bright seyfert", "seyfert galaxy", "partially ionized gas", "optical wavelengths" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof Keith Mason, 2003, 'Spectral Variability of Seyfert Galaxies', PPS_NOT_AVAILABLE, European Space Agency, https://doi.org/10.5270/esa-0u4md6o |