We propose to observe the radio-loud NLS1 galaxy PKSvirgul0558--504 with XMM for fiveorbits (650 ksec). There has been evidence for QPOs with time scales of 7 ksecand 21 ksec in previous short XMM observations. These time scales are near afrequency ratio of 3:1, a well known result from Galactic Black Hole binaries.The main aims of the proposed XMM observation are to confirm the presence of aQPO like feature at 7 ksec, to search for evidence for the associated 21 ksecmodulation, and for the third possible time scale of 14 ks (the one with a 3:2frequency ratio). Confirmation of the presence of these time scales will providea unique probe of strong gravity in the vicinity of an AGN black hole.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2008-09-07T01:13:40Z/2008-09-16T14:46:01Z
Version
17.56_20190403_1200
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.
European Space Agency, Dr Iossif Papadakis, 2009, 'Testing strong gravity in the NLS1 PKS 0558-504', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-a2caiek
