| Proposal ID | 015002 |
| Title | Using Beta Centauri to Probe the Wind-Photosphere Connection |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0150020101 |
| DOI | https://doi.org/10.5270/esa-wbwxyih |
| Principal Investigator, PI | Prof Joseph P. Cassinelli |
| Abstract | The B1 III star Beta Centauri is a Beta Cephei variable with a high X-raycount rate. In the first observation of this star with a high-resolutionX-ray spectrograph, we will determine if the X-rays are widely distributedin the wind by using the forbidden, intercombination, and resonance lines of O VII along with line profile information. The efficiency of XMM-Newton is used to full advantage in this project because at the same time the RGS spectrum is being taken, the co-pointed PN and MOS instruments will give us a light curve with extremely high statistical confidence. This light curve will be used to probe the connection between the photospheric pulsations and the X-ray production in the wind. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2003-07-19T06:10:43Z/2003-07-20T00:25:57Z |
| 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 | 2004-09-02T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "beta centauri", "xmm newton", "xray production", "XMM-Newton", "resolution xray spectrograph", "mos instruments", "line profile information", "xray count rate", "wind photosphere connection", "statistical confidence", "photospheric pulsations", "XMM", "widely distributed", "beta cephei variable", "light curve", "rgs spectrum", "resonance lines" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof Joseph P. Cassinelli, 2004, 'Using Beta Centauri to Probe the Wind-Photosphere Connection', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-wbwxyih |