|Title||High-amplitude variations during early SSS phase in novae|
|Author||Dr Jan-Uwe Ness|
|Description||Extensive Swift X-ray monitoring of novae has revealed unexpected variability on the rise to X-ray maximum in all novae with extensive monitoring but the cause remains elusive. Only a long XMM exposure during this early variability phase allows RGS time evolution studies to fully investigate possible causes such as variations in absorption, intrinsic brightness, or temperature. We propose XMM time totalling 145ks for two triggered observations: a 100ks observation triggered during the early X-ray variability phase with <2d response and a second 45ks observation with >1week response time during the later SSS phase to find what has changed to make the variations stop. We will search both observations for transient short-period oscillations.|
|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, 2022-10-26T00:00:00Z, 084193, 19.17_20220121_1250. https://doi.org/10.57780/esa-nji91jo|