|Title||A NEUTRON STAR ULTRA-COMPACT X-RAY BINARY WITH THE SHORTEST KNOWN ORBITAL PERIOD|
|Author||Dr Kaya Mori|
|Description||An ultra-compact X-ray binary (UCXB) candidate with potentially the shortest known orbital period of 10.2 minutes was serendipitously discovered in the Galactic Bulge. Its only available X-ray spectra from XMM, and radio-IR observations suggest that the source may be the first direct impact NS binary with no accretion disk or (less likely) an intermediate polar. The proposed NuSTAR+XMM observations will confirm the period for a NS spin, and identify the source by a combination of broad-band X-ray spectroscopy and Fe line diagnostics. Given its short orbital period, the source may be one of the few UCXBs detectable by the future LISA GW observatory.|
|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, 2022-04-06T00:00:00Z, 087099, 18.02_20200221_1200. https://doi.org/10.5270/esa-[xxxxxxx]|