| Proposal ID | 086222 |
| Title | Excavating a dinosaur in the Ophiuchus Cluster |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0862220101 |
| DOI | https://doi.org/10.57780/esa-7y7k3br |
| Principal Investigator, PI | Dr Maxim Markevitch |
| Abstract | The Ophiuchus cluster exhibits a curious concave gas discontinuity near itscore. It was discovered by Werner et al, who considered a possibility of itbeing a boundary of an AGN-inflated bubble, but discounted it because itrequired too powerful an outburst. Using very low-frequency (70-240 MHz) datafrom MWA/GLEAM and GMRT, we found that it is in fact a giant bubble filled withdiffuse radio emission with an extremely steep spectrum. It appears to be afossil of the most powerful AGN outbursts seen in any cluster - with the centralAGN being a negligible radio source at present. We propose to survey this sectorof the cluster to map the X-ray cavity, look for signs of cluster-scale sloshingpossibly triggered by this powerful event (hinted at by ROSAT), and clarify the merger details. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2020-08-31T00:25:44Z/2021-03-19T08:10:07Z |
| Version | 19.16_20210326_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 | 2022-04-16T00:00:00Z |
| Keywords | "240 mhz data", "diffuse radio emission", "powerful event hinted", "negligible radio source", "cluster scale sloshing", "low frequency", "agn inflated bubble", "powerful agn outburst", "giant bubble filled", "ophiuchus cluster", "ROSAT", "central agn", "xray cavity" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Maxim Markevitch, 2022, 'Excavating a dinosaur in the Ophiuchus Cluster', 19.16_20210326_1200, European Space Agency, https://doi.org/10.57780/esa-7y7k3br |