A dataset provided by the European Space Agency

Proposal ID 067375
Title XMM-Newton Snapshots of Unusual Gravitational Lenses
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0673750101

DOI https://doi.org/10.5270/esa-ll1gr5p
Principal Investigator, PI Prof Jimmy Irwin
Abstract We propose XMM-Newton observations of three very unusual strong gravitationallenses discovered in the SDSS. All three lenses appear to be high massconcentration groups/galaxies with extreme properties. Hall.s Lens is anoptically-unimpressive group for which the derived mass inside the 78 kpcEinstein radius is an astounding >1e14 solar masses. The Cosmic Horseshoe Lensand the Cassowary 20 Lens are giant elliptical galaxies with extremely largestellar velocity dispersions and absolute optical magnitudes, both of which arecandidates for the most massive galaxy in the Universe. We propose modestexposures of these intriguing systems to obtain luminosities and temperatures toidentify which are worthy of longer follow-up observations.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2011-12-24T07:08:15Z/2011-12-24T13:30:10Z
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2013-01-24T00:00:00Z
Keywords "massive galaxy", "absolute optical magnitudes", "SDSS", "XMM", "xmm newton snapshots", "einstein radius", "intriguing systems", "gravitational lens", "mass inside", "1e14 solar masses", "mass concentration", "giant elliptical galaxy", "stellar velocity dispersions", "optically unimpressive", "XMM-Newton", "cosmic horseshoe lens", "xmm newton"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Jimmy Irwin, 2013, 'XMM-Newton Snapshots of Unusual Gravitational Lenses', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ll1gr5p