| Proposal ID | 008996 |
| Title | An XMM Long-Look at NGC 5548 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0089960301 |
| DOI | https://doi.org/10.5270/esa-hlc9dhc |
| Principal Investigator, PI | Dr Rick Edelson |
| Abstract | NGC5548, one of the brightest, most strongly variable and best-studied AGN inX-rays, has only 20 ksec in the XMM GTO programme. We propose a 130 ksec longlook. When combined with ongoing RXTE monitoring, this will allow determinationof the fluctuation power density spectrum over an unprecedented range of timescales from ~100 to 4x107 sec and measurement of the low frequency breakcharacteristic time scale. NGC 5548 has been claimed to show quasi periodicoscillation; these data will provide a rigorous test. The deep RGS observationwill allow the first direct view of its rich spectrum, which includes a strongwarm absorber, soft excess and iron line. If we detect rapid variability inthese components, we will use cross-correlation analysis to estimate the size. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2001-07-09T15:45:59Z/2001-07-12T18:27:19Z |
| Version | 21.51_20241115_1113 |
| 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 | 2002-09-17T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "warm absorber", "cross correlation analysis", "NGC 5548", "rich spectrum", "deep rgs", "xmm gto programme", "quasi periodic oscillation", "soft excess", "ngc 5548", "XMM", "4x107 sec", "time scales", "rapid variability", "iron line" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Rick Edelson, 2002, 'An XMM Long-Look at NGC 5548', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-hlc9dhc |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |