| Name | 011154 |
| Title | GT Observations of Active Cool Stars: Alpha CrB |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111540101 |
| DOI | https://doi.org/10.5270/esa-07e8e7g |
| Author | European Space Agency |
| Description | GT-Alpha CrB is a binary system consisting of an X-ray dark A star and an X-ray luminous main-sequence mid-G star. Every 17.4 days, the A star eclipses the G star completely. The eclipse is ideal to infer the distribution of X-ray emitting plasma and to infer extent and structure of an active G-star corona. The proposed observation covers one full G star eclipse. The eclipse timing will be combined with previous ROSAT and, if approved, future XMM observations to measure the general relativistic apsidal motion of the system. To avoid optical contamination, the EPICs will use the thick filter. One MOS and the pn use TIMING mode. This is a phase-critical observation. EPIC is the prime instrument. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2001-01-13T13:33:39Z/2001-08-27T14:37:29Z |
| 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 | 2015-07-04T22:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2015, Gt Observations Of Active Cool Stars: Alpha Crb, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-07e8e7g |