| Proposal ID | 060234 |
| Title | X-raying strong gravitational lenses: dark halos and the environment |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0602340101 |
| DOI | https://doi.org/10.5270/esa-j52iyra |
| Principal Investigator, PI | Prof Tommaso Treu |
| Abstract | The SLACS collaboration measured the dark matter halos of elliptical galaxies onscales from 1 to 100 kpc, using a combination of lensing (strong and weak) andstellar dynamics. This provides new tests of the standard cosmological models atgalaxy/group scales. However, lensing can only measure the total projected massalong the line of sight, and therefore can be affected by large-scale structuresin projection. We propose to observe a complete subset of SLACS lenses toidentify nearby groups and clusters, determine their location, temperature, andmass and study the dependency of halo profiles on the local environment,expected because of tidal interactions. The selected low redshift (average 0.13)lens sample is ideal for an X-ray investigation at galaxy/group scales. |
| Publications |
|
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2009-11-15T03:39:17Z/2010-04-15T22:48:58Z |
| 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 | 2011-05-07T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "elliptical galaxy", "dark matter halos", "dark halos", "total projected mass", "xray investigation", "x raying", "tidal interactions", "low redshift average", "standard cosmological models", "lens sample", "gravitational lens", "slacs collaboration", "slacs lenses", "complete subset", "stellar dynamics", "scale structures", "SLACS", "halo profiles" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof Tommaso Treu, 2011, 'X-raying strong gravitational lenses: dark halos and the environment', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-j52iyra |