| Name | 086222 |
| Title | Excavating a dinosaur in the Ophiuchus Cluster |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0862220101 |
| DOI | https://doi.org/10.57780/esa-7y7k3br |
| Author | Dr Maxim Markevitch |
| Description | The Ophiuchus cluster exhibits a curious concave gas discontinuity near its core. It was discovered by Werner et al, who considered a possibility of it being a boundary of an AGN-inflated bubble, but discounted it because it required too powerful an outburst. Using very low-frequency (70-240 MHz) data from MWA-GLEAM and GMRT, we found that it is in fact a giant bubble filled with diffuse radio emission with an extremely steep spectrum. It appears to be a fossil of the most powerful AGN outbursts seen in any cluster - with the central AGN being a negligible radio source at present. We propose to survey this sector of the cluster to map the X-ray cavity, look for signs of cluster-scale sloshing possibly triggered by this powerful event (hinted at by ROSAT), and clarify the merger details. |
| Publication | No observations found associated with the current proposal |
| 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 Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2022-04-16T00:00:00Z, 086222, 19.16_20210326_1200. https://doi.org/10.57780/esa-7y7k3br |