We propose to observe the gravitationally lensed quadruple quasar Q2237+0305with XMM with three goals in mind. The first is to determine its X-rayluminosity and hence the spectral energy distribution of this important highredshift quasar. The second goal is to detect possible variability in the X-rayflux of this quasar on time scales of a few hours or smaller. The third goalrelates to the possibility of determining the nature of any X-ray variability,since it can be either intrinsic or microlens-induced. Intrinsic variabilitycould be used to determine the time delay (which is inversely proportional tothe Hubble constant), microlensing depends on the source size of the X-rayemitting region and on the possible dark compact objects in the lensing galaxy.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2002-05-28T15:46:29Z/2002-05-29T03:40:59Z
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 Michael Watson, 2003, 'Gravitationally Lensed Quasar Q2237+0305 SSC_36', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-1dva36n
