A dataset provided by the European Space Agency

Proposal ID 078457
Title Probing the Warped Inner Accretion Flow in SMC X-1 with XMM and NuSTAR
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DOI https://doi.org/10.5270/esa-xho7zkj
Principal Investigator, PI Prof Ryan Hickox
Abstract We propose for a series of four 20 ks observations with XMM and NuSTAR of thebinary 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 isheated by the pulsed hard X-ray beam from the neutron star, and observations ofthis thermal emission can provide a unique probe of the inner accretion flownear the magnetosphere. However this requires sensitivity and timing resolutionacross the full X-ray band (from below 1 keV to above 20 keV), and sampling of afull superorbital cycle. We will take advantage of XMM.s excellent sensitivityand time resolution along with NuSTAR.s exquisite high-energy coverage to yieldthe clearest picture to date of the inner accretion flow.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2016-09-08T21:24:04Z/2016-10-25T03:03:14Z
Version 19.17_20220121_1250
Mission Description The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2017-11-14T23:00:00Z
Keywords "NuSTAR", "xray band", "inner accretion flow", "XMM", "clearest picture", "time resolution", "neutron star", "smc x", "precessing accretion disk", "thermal emission", "superorbital cycle", "energy coverage"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Ryan Hickox, 2017, 'Probing the Warped Inner Accretion Flow in SMC X-1 with XMM and NuSTAR', 19.17_20220121_1250, European Space Agency, https://doi.org/10.5270/esa-xho7zkj