|Title||First high resolution spectral studies from marginally stable nuclear burning|
|Author||Mr D. Altamirano|
|Description||We propose to perform the first high spectral resolution studies of the recently found milihertz quasi-periodic oscillations in the X-ray time variability of two neutron star systems. These phenomena are very likely due to a marginally stable nuclear burning on the neutron star surface which means that by measuring the gravitational redshift of the spectral lines we will be able to constrain the mass-to-radius ratio. Furthermore, the resulting spectrum can give us further information about the emitting area, and particularly, the temperature obtained from the spectral fits will confirm if the local accretion rate onto the star is virgulL_E as the simulations suggest. This could prove, for the first time, the extent to which the accreted material spreads over the surface.|
|Publication||No observations found associated with the current proposal|
|Instrument||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, 2011-11-04T00:00:00Z, 040670, 17.56_20190403_1200. https://doi.org/10.5270/esa-0dtffqt|