| Proposal ID | 079085 |
| Title | COLLIDING WIND X-RAY EMISSION FROM THE MASSIVE BINARY WR140 AROUND PERIASTRON |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0790850101 |
| DOI | https://doi.org/10.5270/esa-m913cro |
| Principal Investigator, PI | Dr Kenji Hamaguchi |
| Abstract | The wind-wind collision (WWC) in eccentric massive binary systems producespredictably variable shock-heated X-ray plasma. This collision provides an ideallaboratory for shock astrophysics, providing key constraints on how gasthermalizes at variable density and on particle acceleration. Joint NuSTAR andXMM-Newton observation of WR 140 in AO14 discovered an extremely hard X-raycomponent, which can originate either from a kT ~13 keV plasma orinverse-Compton scattering. WR 140 will experience its periastron passage in2016 Dec., a critical time when the WWC emission changes dramatically. Wepropose joint NuSTAR and XMM-Newton observations of WR 140 at key phases aroundperiastron in AO15, to determine the origin of this component and answer questions about the abrupt X-ray flux decrease. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2016-12-04T05:54:25Z/2016-12-26T11:10:00Z |
| 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 | 2018-01-19T23:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "", "xmm newton", "hard xray component", "key phases", "periastron passage", "inverse compton scattering", "massive binary wr140", "ideal laboratory", "particle acceleration", "gas thermalizes", "key constraints", "wr 140", "XMM-Newton", "kev plasma", "NuSTAR", "variable density", "2016 dec .", "wwc emission", "shock astrophysics", "XMM" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Kenji Hamaguchi, 2018, '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-m913cro |