A dataset provided by the European Space Agency

Name 008996
Title An XMM Long-Look at NGC 5548
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0089960301
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0089960401

DOI https://doi.org/10.5270/esa-hlc9dhc
Author Dr Rick Edelson
Description NGC5548, one of the brightest, most strongly variable and best-studied AGN in X-rays, has only 20 ksec in the XMM GTO programme. We propose a 130 ksec long look. When combined with ongoing RXTE monitoring, this will allow determination of the fluctuation power density spectrum over an unprecedented range of time scales from virgul100 to 4x107 sec and measurement of the low frequency break characteristic time scale. NGC 5548 has been claimed to show quasi periodic oscillation; these data will provide a rigorous test. The deep RGS observation will allow the first direct view of its rich spectrum, which includes a strong warm absorber, soft excess and iron line. If we detect rapid variability in these components, we will use cross-correlation analysis to estimate the size.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-07-09T15:45:59Z/2001-07-12T18:27:19Z
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 2002-09-17T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2002-09-17T00:00:00Z, 008996, 17.56_20190403_1200. https://doi.org/10.5270/esa-hlc9dhc