A dataset provided by the European Space Agency

Name 055517
Title Testing strong gravity in the NLS1 PKS 0558-504


DOI https://doi.org/10.5270/esa-a2caiek
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
Temporal Coverage 2008-09-07T01:13:40Z/2008-09-16T14:46:01Z
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 2009-10-28T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2009, 055517, 17.56_20190403_1200. https://doi.org/10.5270/esa-a2caiek