The Z-track source Cygnus X-2 has relativistic jets essentially in only one ofits three states allowing us to find conditions at the inner disk needed for jetformation. The applicants recently made breakthroughs, proposing from continuumanalysis a model for the Z-track and jet formation and secondly mapping highlyionized ADC line features around the Z indicating that the mass accretion rateincreases in the sense opposite to that shown by the continuum. The crux ofunderstanding the 3 states, jet formation and line formation in the ADC isfinding the direction of Mdot increase and we propose to do this by obtainingthe evolution of continuum and lines over a complete Z-track movement with XMMand Chandra.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2009-05-12T09:30:14Z/2009-05-13T09:19:39Z
Version
17.56_20190403_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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.
European Space Agency, Dr Michael Church, 2010, 'The mechanism of jet formation in Cyg X-2 and the nature of the hot ADC', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-30d7k1l
