|Title||Testing the theory of modified shocks in the wind-wind collision of HD54662|
|Author||Prof Gregor Rauw|
|Description||In an eccentric massive binary, the X-ray emission of an adiabatic wind interaction should vary as 1-d. Yet, among the few adiabatic colliding wind O + O binaries observed so far, deviations from this relation were found. Since these systems are non-thermal radio emitters, such deviations could reflect the impact of modified shocks. To test this explanation, we propose to collect an X-ray spectrum of the 558 day period O-star binary HD54662 near apastron. HD54662 should feature an adiabatic wind-wind interaction, but shows no evidence for the presence of relativistic particles. Together with an existing observation near periastron, these data will provide a clean test of the impact of non-thermal particles on the shocks.|
|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, 2017-10-13T22:00:00Z, 078015, 17.56_20190403_1200. https://doi.org/10.5270/esa-w6alt9j|