|Title||Spectral Variability of 3C 273|
|Author||Dr Martin Turner|
|Description||GT-The time variability of 3C 273 is to be studied over the first two years of XMM by repeated 5 ks observations (8 observations with 40 ks total, to be scheduled according to the visibility of the source). XMM is capable of observing the soft and the hard X-ray spectral components simultaneously thereby allowing to study the variability of the spectrum and its features, e.g that of the soft excess.|
|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, 2005-01-09T00:00:00Z, 011277, PPS_NOT_AVAILABLE. https://doi.org/10.5270/esa-t2b2sfc|