|Title||The extraordinary X-ray source population of NGC 4485 & 4490|
|Author||Ms Jeanette Gladstone|
|Description||The interaction of the nearby galaxy pair, NGC 4485 & 4490 (d=7.8 Mpc), has led to enhanced star formation in the galaxies, and hence enhanced X-ray activity. The most remarkable feature of this is a population of at least six ultraluminous X-ray sources (ULXs). Here we propose two new 40-ks XMM-Newton observations, with the primary aim of studying these extraordinary sources. The depth of the proposed observations will be sufficient to place constraints on the presence of a .cool. disk in their X-ray spectra, and on the presence of short-term variability, whilst extending the baseline of observations to continue long-term spectral and temporal variability studies. We will also detect sufficient counts to study the extensive diffuse X-ray emission of this system.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2009-07-29T00:00:00Z, 055630, 17.56_20190403_1200. https://doi.org/10.5270/esa-8af0szb|