A dataset provided by the European Space Agency

Name: The outer atmospheres of ultra-fast rotating active stars
Published: 2015-12-15T23:00:00Z
License: https://creativecommons.org/licenses/by-nc/3.0/igo

Proposal ID	074059
Title	The outer atmospheres of ultra-fast rotating active stars
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0740590101
DOI	https://doi.org/10.5270/esa-b8twe0n
Principal Investigator, PI	Dr Sairam Lalitha
Abstract	We propose to carry out an in-depth X-ray and NUV study of 3 ultra-fast rotatorswith rotation periods between 0.42 and 0.45 days. We intend to study the highlytime-resolved correlation of upper chromospheric and coronal activity indicatorsand to study the rotational modulation of its X-ray and NUV fluxes. Theseproposed observations will allow us to characterize the time-correlated X-rayand NUV emission of stars with saturated coronae. Furthermore, the proposedobservations will yield insight into the nature of the associated magneticdynamos.
Publications	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 Structure and variability in the corona of the ultrafast rotator LO Pegasi \|Lalitha S. Schmitt J. H. M. M. \| A&A \| 602-26 \| 2017 \| 2017A&A...602A..26L \| http://ui.adsabs.harvard.edu/#abs/2017A&A...602A..26L 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 Indications of stellar coronal mass ejections through coronal dimmings \|Veronig Astrid M. Odert Petra et al. \| NatAs \| 5-697 \| 2021 \| 2021NatAs...5..697V \| http://ui.adsabs.harvard.edu/#abs/2021NatAs...5..697V 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 Coronal Modulation in the Ultra-fast Rotator LO Peg \|Singh Gurpreet Pandey Jeewan Chandra \| BSRSL \| 93-146 \| 2024 \| 2024BSRSL..93..146S \| http://ui.adsabs.harvard.edu/#abs/2024BSRSL..93..146S New 511 keV Line Data Provide Strongest sub-GeV Dark Matter Constraints \|De la Torre Luque Pedro Balaji Shyam \| ApJ \| 973-L6 \| 2024 \| 2024ApJ...973L...6D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...973L...6D
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2014-11-30T21:27:23Z/2014-12-01T09:24:03Z
Version	21.51_20241115_1113
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	2015-12-15T23:00:00Z
Last Update	2026-07-09
Keywords	"upper chromospheric", "magnetic dynamos", "rotational modulation", "nuv fluxes", "time resolved correlation", "ultra fast rotators", "coronal activity indicators", "saturated coronae", "rotation periods", "outer atmosphere", "time correlated xray", "depth xray", "nuv emission"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Sairam Lalitha, 2015, 'The outer atmospheres of ultra-fast rotating active stars', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-b8twe0n
Rights	Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.