Since SZ samples are thought to be representative of the true cluster populationone can use them to estimate, and eventually correct, the biases in the scalingrelations derived with X-ray selected samples. We propose to observe 18 galaxyclusters with a total exposure time of 226ks to complete the observations of thePlanck Cosmological Reference Sample consisting of 189 clusters. The oservationswill allow us to completely characterize the sample in terms of dynamical stateand therefore enable detailed studies of key cluster scaling relations. Withthese results in hand we will be able to investigate the physics behind thedifferences observed in the properties of X-ray and SZ selected samples anddetermine proper bias corrections to be used in the near future with eROSITA.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2019-06-08T03:48:21Z/2020-04-05T04:03:20Z
Version
18.02_20200221_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.
European Space Agency, Dr Lorenzo Lovisari, 2021, 'Getting ready for eROSITA\: characterizing a well defined SZ sample of clusters', 18.02_20200221_1200, European Space Agency, https://doi.org/10.5270/esa-p0mwjtq
