|Title||THE STELLAR COLLISION RATE AND NEUTRON STAR BINARIES IN GLOBULAR CLUSTERS|
|Author||Dr DIDER BARRET|
|Description||Our program to investigate the nature of the dim X-ray sources in globular clusters (GCs), proposed to be various binaries, has revealed two quiescent X-ray binaries with a neutron star primary (qNSs). Examining 8 other GCs, indicates that a correlation exists between the collision rate and the number of qNSs. We wish to observe 4 GCs, which should contain varying numbers of qNS, to try to verify the relation, which has implications for the formation and evolution of GCs. Using the well-determined neutron star parameters will also help exclude many possible equations of state. Further, we will continue to characterize the content of GCs, as it is of interest for theories of binary production and evolution, and the evolution and survival of GCs.|
|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, 2008-08-29T00:00:00Z, 020584, 17.56_20190403_1200. https://doi.org/10.5270/esa-f75anyg|