|Title||Crust cooling of the neutron star in EXO 0748-676|
|Author||Ms Aastha Parikh|
|Description||We propose a 70 ksec observation of the neutron-star transient low-mass X-ray binary EXO 0748- 676. Neutron-star crusts provide the unique opportunity to study the extreme conditions introduced by very high density matter. The density in a neutron-star crust increases by eight orders of magnitude over only virgul1 km, from virgul1e6 g-cm3 at the surface to virgul1e14 g-cm3 at the crust-core boundary. Accretion outbursts can heat neutron-star crusts which cool once the outburst ceases. Monitoring this cooling evolution provides an insight into the properties of the neutron-star crusts. Heat from deep in the crust propagates to the surface on time scales of about a decade, thus our requested observation, virgul10 yr after the end of outburst, will enable us to study the property of very dense matter (virgul1e12-1e14 g-cm^3 ).|
|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, 2019-05-23T22:00:00Z, 082442, 17.56_20190403_1200. https://doi.org/10.5270/esa-3hlexqc|