A dataset provided by the European Space Agency

Name 078150
Title Do coronal polar spots exist?
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0781500101

DOI https://doi.org/10.5270/esa-ms1lgo4
Author Dr Uwe Wolter
Description It is not known whether the large photospheric polar spots found in many highly active stars have a counterpart in their corona or chromosphere. Our target, ER Vul, is a short-period eclipsing binary harbouring two highly active G-dwarfs. During eclipse, only the polar regions of the component stars are occulted. We propose to study the corona and chromosphere of both components of ER Vul using XMM-Newton light curves covering a complete orbit of ER Vul, i.e. one primary and one secondary eclipse. The X-ray light curves will yield a spatial sampling of the polar coronae of both component stars, while the OM light curve will yield simultanous chromospheric information. Based on the proposed observations, we will assess, whether coronal and chromospheric polar spots exist on ER Vul.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2016-04-22T13:33:58Z/2016-04-23T10:52:18Z
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 2017-05-17T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2017-05-17T22:00:00Z, 078150, 17.56_20190403_1200. https://doi.org/10.5270/esa-ms1lgo4