| Proposal ID | 088471 |
| Title | An XMM-Newton+HST study of an extreme, high-redshift cluster merger |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0884710101 |
| DOI | https://doi.org/10.57780/esa-eyllfta |
| Principal Investigator, PI | Mrs Hannah Zohren |
| Abstract | We propose XMM-Newton+HST observations of SPT-CLJ2228 5828, a high-redshift(z=0.73) galaxy cluster merger. It exhibits two widely-separated (940 kpc)centers in the galaxy distribution with counterparts identified in a weaklensing analysis. From an SPT-SZ map, the cluster gas appears to be located inbetween the two peaks of the galaxy distribution and mass map, suggesting adissociative merger. If confirmed, SPT-CLJ2228 5828 would be among the widestdissociated mergers known. The requested high-resolution X-ray observations willallow us to confirm the dissociated merger nature and to constrain the clusterX-ray temperature and luminosity to 10%. We request complementary HSTobservations to substantially improve the mass reconstruction using strong and weak gravitational lensing. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2021-05-01T07:24:36Z/2021-05-02T10:56:16Z |
| Version | 21.51_20241115_1113 |
| 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 | 2022-06-01T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "XMM-Newton", "XMM", "cluster gas appears", "dissociative merger", "complementary hst", "redshift cluster merger", "spt clj2228 5828", "cluster xray temperature", "dissociated merger", "weak lensing analysis", "resolution xray", "widest dissociated mergers", "redshift z", "spt sz map", "HST", "weak gravitational lens", "widely separated 940", "mass map", "mass reconstruction", "galaxy distribution", "xmm newton" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Mrs Hannah Zohren, 2022, 'An XMM-Newton+HST study of an extreme, high-redshift cluster merger', 21.51_20241115_1113, European Space Agency, https://doi.org/10.57780/esa-eyllfta |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |