We propose to observe five X-ray-faint genuine elliptical galaxies (for 150ksec). The observed tight correlation between Lx and T for a small sample of Egalaxies suggests that the retention of hot gas (potential depth) and thebalance between heating and cooling is closely regulated. The available datasuggest that the tight relation may extend down to log(Lx)virgul38.5. However,theoretical predictions and numerical simulations suggest that the gas is in anoutflow/wind state at these Lx, predicting an end to the correlation. We proposeto constrain observationally the Lx-T relation at the lowest Lx to test the mostsubstantial effect of the baryonic physics and provide the necessaryconfirmation of feedback recipes or the need for their corrections.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2021-06-29T02:13:05Z/2021-06-29T07:08:05Z
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.
European Space Agency, Dr Dong-Woo Kim, 2022, 'The Lx-T Scaling Relation of Low Lx Genuine Elliptical Galaxies', 19.16_20210326_1200, European Space Agency, https://doi.org/10.57780/esa-vxmz831
