A dataset provided by the European Space Agency

Name: Episodic Mass Loss comma Magnetic Fields and Surface Activity in Cool Hypergiants
Published: 2013-05-18T00:00:00Z

Proposal ID	069119
Title	Episodic Mass Loss, Magnetic Fields and Surface Activity in Cool Hypergiants
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0691190101
DOI	https://doi.org/10.5270/esa-vnl4f53
Principal Investigator, PI	Dr Roberta Humphreys
Abstract	The complex circumstellar ejecta of the most luminous, evolved cool stars revealmultiple, asymmetric mass loss events. The loops, arcs and knots were ejected atdifferent times in different directions apparently by localized processes fromseparate regions on the star. Strong magnetic fields measured in their ejectasupport suggestions that their episodic mass loss may be driven by surfaceactivity. We are proposing an exploratory XMM search for X-ray emission thatshould be associated with this surface convective/magnetic activity.
Publications	Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift \|Yershov, V. N., \| Ap&SS \| 354-97 \| 2014 \| 2014Ap&SS.354...97Y \| http://ui.adsabs.harvard.edu/#abs/2014Ap&SS.354...97Y The Million Optical - Radio/X-ray Associations (MORX) Catalogue \|Flesch, Eric W., \| PASA \| 33-52 \| 2016 \| 2016PASA...33...52F \| http://ui.adsabs.harvard.edu/#abs/2016PASA...33...52F 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 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	2012-05-07T05:08:55Z/2012-05-07T11:14:11Z
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	2013-05-18T00:00:00Z
Keywords	"separate region", "magnetic activity", "evolved cool stars", "localized processes", "magnetic fields", "XMM", "directions apparently", "cool hypergiants", "episodic mass loss", "surface activity", "surface convective", "ejecta support suggestions", "complex circumstellar ejecta", "xray emission", "exploratory xmm search"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Roberta Humphreys, 2013, 'Episodic Mass Loss comma Magnetic Fields and Surface Activity in Cool Hypergiants', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-vnl4f53