A key missing piece in our understanding of AGN feedback and evolution ofmassive galaxies is the velocity structure within their hot gaseous halos. Wepropose a deep 530 ks observation of NGC 5813, a nearby, X-ray bright, massivegalaxy. Combined with the archival data, we will use the first and second orderRGS spectra to disentangle redshifts of two temperature components present inthe gas from their spatial offsets. This will provide the first measurements ofbulk velocities of multiple gas temperature components in a galaxy halo, openinga new window onto study gas dynamics and AGN feedback with RGS. Until Athena,RGS will be the only instrument with sufficient spectral and spatial resolutionto probe hot gas motions on the r^ant, b¿<kpc scales.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2023-01-21T10:17:50Z/2023-02-17T14:27:42Z
Version
20.09_20221024_1724
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.
European Space Agency, Dr Anna Ogorzalek, 2024, 'Unveiling bulk motions in hot gaseous halo of a giant elliptical galaxy', 20.09_20221024_1724, European Space Agency, https://doi.org/10.57780/esa-0o1xzt9
