
| Proposal ID | 074198 |
| Title | Revealing the WHIM and Accretion Physics between Two Nearby Galaxy Clusters |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0741980101 |
| DOI | https://doi.org/10.5270/esa-esmvf2t |
| Principal Investigator, PI | Dr Ka-Wah Wong |
| Abstract | We propose to search for X-ray emission from the warm-hot intergalactic medium(WHIM) between a nearby (z=0.06) double galaxy cluster system Abell 2625/2626which is located in the 300~Mpc long Perseus--Pegasus filament and is orient-ated almost along the line of sight. Our previous observation of the moremass-ive cluster Abell 2626 has indicated that it is preferentially accretingmater-ial from this filament. Physical properties of the WHIM such as densityand temperature will be constrained. We will also search for subclusters/clumpsalong the filament and merging signatures of the less massive cluster Abell2625. The proposed observation will reveal the dynamical accretion processes ofclusters and groups along this large-scale filamentary structure in detail. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2014-12-13T05:15:27Z/2014-12-14T01:42:07Z |
| 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 | 2016-01-13T23:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "nearby z", "dynamical accretion processes", "orient ated", "physical properties", "perseus pegasus filament", "Abell 2625", "scale filamentary structure", "accretion physics", "xray emission", "merging signatures", "nearby galaxy clusters" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Ka-Wah Wong, 2016, 'Revealing the WHIM and Accretion Physics between Two Nearby Galaxy Clusters', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-esmvf2t |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |