A dataset provided by the European Space Agency

Name: Do coronal polar spots exist?
Published: 2017-05-17T22:00:00Z

Proposal ID	078150
Title	Do coronal polar spots exist?
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0781500101
DOI	https://doi.org/10.5270/esa-ms1lgo4
Principal Investigator, PI	Dr Uwe Wolter
Abstract	It is not known whether the large photospheric polar spots found in many highlyactive stars have a counterpart in their corona or chromosphere. Our target, ERVul, is a short-period eclipsing binary harbouring two highly active G-dwarfs.During eclipse, only the polar regions of the component stars are occulted. Wepropose to study the corona and chromosphere of both components of ER Vul usingXMM-Newton light curves covering a complete orbit of ER Vul, i.e. one primaryand one secondary eclipse. The X-ray light curves will yield a spatial samplingof the polar coronae of both component stars, while the OM light curve willyield simultanous chromospheric information. Based on the proposed observations,we will assess, whether coronal and chromospheric polar spots exist on ER Vul.
Publications	Classification of 4XMM-DR9 sources by machine learning \|Zhang Yanxia Zhao Yongheng \| MNRAS \| 503-5263 \| 2021 \| 2021MNRAS.503.5263Z \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.503.5263Z An X-Ray Study of Coronally Connected Active Eclipsing Binaries \|Singh Gurpreet Pandey J. C. \| ApJ \| 934-20 \| 2022 \| 2022ApJ...934...20S \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...934...20S The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII O VIII and Fe L-shell Transitions \|Pan Zeyang Qu Zhijie et al. \| ApJS \| 271-62 \| 2024 \| 2024ApJS..271...62P \| http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez Antonio C. \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R Robust constraints on feebly interacting particles using XMM-Newton \|Luque Pedro De la Torre Balaji Shyam \| PhRvD \| 109-L101305 \| 2024 \| 2024PhRvD.109j1305L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j1305L Multimessenger search for electrophilic feebly interacting particles from supernovae \|Luque Pedro De la Torre Balaji Shyam \| PhRvD \| 109-103028 \| 2024 \| 2024PhRvD.109j3028L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j3028L Importance of Cosmic-Ray Propagation on Sub-GeV Dark Matter Constraints \|De la Torre Luque Pedro Balaji Shyam \| ApJ \| 968-46 \| 2024 \| 2024ApJ...968...46D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...968...46D
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 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	2017-05-17T22:00:00Z
Last Update	2025-01-27
Keywords	"xray light curves", "photospheric polar spots", "polar region", "simultanous chromospheric information", "om light curve", "XMM-Newton", "secondary eclipse", "er vul", "XMM", "complete orbit", "polar coronae", "component stars", "active stars", "spatial sampling"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Uwe Wolter, 2017, 'Do coronal polar spots exist?', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ms1lgo4