|Colliding Wind X-ray Emission from the Massive Binary WR140 around Periastron
|Dr Kenji Hamaguchi
|The wind-wind collision (WWC) in eccentric massive binary systems produces predictably variable X-ray plasma. This nearly ..controlled. collision provides an ideal laboratory for shock astrophysics, providing key constraints on how gas thermalizes at variable density and on particle acceleration. Joint XMM-Newton and NuSTAR observation of WR 140 in AO14 discovered an extremely hard X-ray component, which can originate either from a kT virgul13 keV plasma or inverse Compton scattering. WR 140 will experience its periastron passage in 2016, a critical time when the WWC emission changes dramatically. We propose joint XMM-Newton-NuSTAR observations of WR 140 at key phases around periastron in AO15, to determine the origin of this component and understand the X-ray Minimum.
|No observations found associated with the current proposal
|EMOS1, EMOS2, EPN, OM, RGS1, RGS2
|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
|European Space Agency, 2019, 079538, 17.56_20190403_1200. https://doi.org/10.5270/esa-o0p832n