A dataset provided by the European Space Agency

Proposal ID 078413
Title Colliding Wind X-ray Emission from the Massive Binary WR140 around Periastron
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0784130301
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0784130401

DOI https://doi.org/10.5270/esa-c5qr6q7
Principal Investigator, PI Dr Kenji Hamaguchi
Abstract The wind-wind collision (WWC) in eccentric massive binary systems producespredictably variable X-ray plasma. This nearly controlled.. collision providesan ideal laboratory for shock astrophysics, providing key constraints on how gasthermalizes at variable density and on particle acceleration. Joint XMM-Newtonand NuSTAR observation of WR 140 in AO14 discovered an extremely hard X-raycomponent, which can originate either from a kT virgul13 keV plasma or inverseCompton scattering. WR 140 will experience its periastron passage in 2016, acritical time when the WWC emission changes dramatically. We propose jointXMM-Newton/NuSTAR observations of WR 140 at key phases around periastron inAO15, to determine the origin of this component and understand the X-ray Minimum.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2016-06-13T15:38:31Z/2016-11-12T07:20:19Z
Version 17.56_20190403_1200
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 2017-11-23T23:00:00Z
Keywords "NuSTAR", "key phases", "kev plasma", "XMM-Newton", "particle acceleration", "xray minimum", "xmm newton", "massive binary wr140", "shock astrophysics", "key constraints", "XMM", "ideal laboratory", "periastron passage", "wr 140", "gas thermalizes", "variable density", "inverse compton scattering", "wwc emission", "hard xray component"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Kenji Hamaguchi, 2017, 'Colliding Wind X-ray Emission from the Massive Binary WR140 around Periastron', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-c5qr6q7