Name | 055626 |
Title | Varieties of WN star X-ray Emission Mechanisms |
URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0556260301 |
DOI | https://doi.org/10.5270/esa-lw6hoe5 |
Author | Mr Andrew Pollock |
Description | The extreme range of physical conditions in the winds of Wolf-Rayet stars of the nitrogen sequence in terms of density, velocity and chemical composition gives more leverage to attack the unsolved origin of X-rays from hot stars than available through the more homogenous O stars. We propose to obtain EPIC spectra of 4 prominent WN stars, including two single stars and two binaries, in order to explore both ends of the luminosity distribution. |
Publication | No observations found associated with the current proposal |
Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2009-04-16T10:28:20Z/2009-04-17T05:12:56Z |
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 | 2010-05-16T00:00:00Z |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Mr Andrew Pollock, 2010, 055626, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-lw6hoe5 |