|Title||Probing the Warped Inner Accretion Flow in SMC X-1 with XMM and NuSTAR|
|Author||Prof Ryan Hickox|
|Description||We propose for a series of four 20 ks observations with XMM and NuSTAR of the binary X-ray pulsar SMC X-1. This source shows a long-period (40 60 d) superorbital cycle due to a warped, precessing accretion disk. This disk is heated by the pulsed hard X-ray beam from the neutron star, and observations of this thermal emission can provide a unique probe of the inner accretion flow near the magnetosphere. However this requires sensitivity and timing resolution across the full X-ray band (from below 1 keV to above 20 keV), and sampling of a full superorbital cycle. We will take advantage of XMM.s excellent sensitivity and time resolution along with NuSTAR.s exquisite high-energy coverage to yield the clearest picture to date of the inner accretion flow.|
|Publication||The Extended Distribution of Baryons around Galaxies . Bregman, Joel N., Anderson, Michael E., et all. . ApJ . 862-3 . 2018 . 2018ApJ...862....3B ,
Monitoring the Superorbital Period Variation and Spin Period Evolution of SMC X-1 . Hu, Chin-Ping, Mihara, Tatehiro, et all. . ApJ . 885-123 . 2019 . 2019ApJ...885..123H ,
Modeling the Precession of the Warped Inner Accretion Disk in the Pulsars LMC X-4 and SMC X-1 with NuSTAR and XMM-Newton . Brumback, McKinley C., Hickox, Ryan C., et all. . ApJ . 888-125 . 2020 . 2020ApJ...888..125B ,
|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, 2017-11-14T23:00:00Z, 078457, 17.56_20190403_1200. https://doi.org/10.5270/esa-xho7zkj|