Name | 079085 |
Title | COLLIDING WIND X-RAY EMISSION FROM THE MASSIVE BINARY WR140 AROUND PERIASTRON |
URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0790850101 |
DOI | https://doi.org/10.5270/esa-m913cro |
Author | Dr Kenji Hamaguchi |
Description | The wind-wind collision (WWC) in eccentric massive binary systems produces predictably variable shock-heated X-ray plasma. This collision provides an ideal laboratory for shock astrophysics, providing key constraints on how gas thermalizes at variable density and on particle acceleration. Joint NuSTAR and XMM-Newton observation of WR 140 in AO14 discovered an extremely hard X-ray component, which can originate either from a kT virgul13 keV plasma or inverse-Compton scattering. WR 140 will experience its periastron passage in 2016 Dec., a critical time when the WWC emission changes dramatically. We propose joint NuSTAR and XMM-Newton observations of WR 140 at key phases around periastron in AO15, to determine the origin of this component and answer questions about the abrupt X-ray flux decrease. |
Publication | No observations found associated with the current proposal |
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 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. |
Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
Date Published | 2018-01-19T23:00:00Z |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Dr Kenji Hamaguchi, 2018, 079085, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-m913cro |