Name | 060317 |
Title | Evolution of an Active Stellar Corona on Time Scales of Days |
URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0603170201 |
DOI | https://doi.org/10.5270/esa-2feoegr |
Author | Prof Ehud Behar |
Description | The solar corona evolves on time scales of days to years reflecting local and global solar magnetic variations. The changes in coronal activity are observed through temperature and abundance variations over these time scales. Coronae of other stars are believed to be analogous to that of the sun, but can be orders of magnitude more active. Despite the assumed similarity, we are lacking a systematic study of the evolution of a stellar corona on the r^ant time scale of days. We propose to carry out iso-phase snapshots of the active corona of EI Eri over six days in order to study for the first time the chemical and thermal evolution of active regions on a stellar corona over the time scales typical of evolving solar coronal loops. |
Publication | No observations found associated with the current proposal |
Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2009-08-01T00:02:50Z/2009-08-07T07:31:32Z |
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 | 2010-09-02T00:00:00Z |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Prof Ehud Behar, 2010, 060317, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-2feoegr |