| Name | 065229 |
| Title | EF Eridani in the low state |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0652290101 |
| DOI | https://doi.org/10.5270/esa-3hul3td |
| Author | Prof Frederick Walter |
| Description | The polar EF Eridani (2A 0311-227) was once one of the brightest soft X-ray sources in the sky. For the past decade it has been in an extended inactive state (with the exception of occasional short "burps"). We seek to study the residual X-ray activity in this system. The data suggest that the residual optical activity occurs either on the irradiated surface of the substellar mass companion or in a coupling region where the secondary.s wind and-or its magnetic field interacts with the megaGauss field of the white dwarf. X-ray observations will provide important clues to the magnetic geometry of polars, and the physics of the coupling region. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2011-01-15T08:10:05Z/2011-01-16T04:06:07Z |
| 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 | 2012-02-03T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2012-02-03T00:00:00Z, 065229, 17.56_20190403_1200. https://doi.org/10.5270/esa-3hul3td |