|Title||RX J0812.4 3114: The Coolest Be X-ray Pulsar in Quiescence|
|Author||Dr Yue Zhao|
|Description||Be-X-ray pulsars in quiescence emit X-rays that may include thermal emission from the hot NS surface, nonthermal emission from continued accretion, or X-rays from the hot winds of their optical companions. RX J0812.4 3114 is a Be X-ray pulsar observed in quiescence by Chandra for 4.6 ks, with only a few photons. A best-fit thermal NS atmosphere model to the Chandra data revealed an unusually low temperature and much larger inferred emission region radius compared to other quiescent systems of the same kind; however, the very low counting statistics make it hard to robustly characterize the spectrum. We, therefore, propose an XMM observation to discriminate between a NS atmosphere model vs. a thermal plasma model, search for pulsations, and unveil the nature of the X-ray emission.|
|Publication||Soft excess in the quiescent Be-X-ray pulsar RX J0812.4-3114 . Zhao, Yue, Heinke, Craig O., et all. . MNRAS . 488-4427 . 2019 . 2019MNRAS.488.4427Z ,
|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, 2019-10-29T23:00:00Z, 082205, 17.56_20190403_1200. https://doi.org/10.5270/esa-4sct426|