|Title||Testing strong gravity in the NLS1 PKS 0558-504|
|Author||Dr Iossif Papadakis|
|Description||We propose to observe the radio-loud NLS1 galaxy PKSvirgul0558--504 with XMM for five orbits (650 ksec). There has been evidence for QPOs with time scales of 7 ksec and 21 ksec in previous short XMM observations. These time scales are near a frequency 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 a QPO like feature at 7 ksec, to search for evidence for the associated 21 ksec modulation, and for the third possible time scale of 14 ks (the one with a 3:2 frequency ratio). Confirmation of the presence of these time scales will provide a unique probe of strong gravity in the vicinity of an AGN black hole.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2009-10-28T00:00:00Z, 055517, 17.56_20190403_1200. https://doi.org/10.5270/esa-a2caiek|