|Title||XMM-Newton Snapshots of Unusual Gravitational Lenses|
|Author||Prof Jimmy Irwin|
|Description||We propose XMM-Newton observations of three very unusual strong gravitational lenses discovered in the SDSS. All three lenses appear to be high mass concentration groups-galaxies with extreme properties. Hall.s Lens is an optically-unimpressive group for which the derived mass inside the 78 kpc Einstein radius is an astounding >1e14 solar masses. The Cosmic Horseshoe Lens and the Cassowary 20 Lens are giant elliptical galaxies with extremely large stellar velocity dispersions and absolute optical magnitudes, both of which are candidates for the most massive galaxy in the Universe. We propose modest exposures of these intriguing systems to obtain luminosities and temperatures to identify which are worthy of longer follow-up observations.|
|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, 2013-01-24T00:00:00Z, 067375, 17.56_20190403_1200. https://doi.org/10.5270/esa-ll1gr5p|