A dataset provided by the European Space Agency

Name 065114
Title Tau Boo.s magnetic polarity switch in X-rays


DOI 10.5270/esa-ruvjqdp
Author Mrs Katja Poppenhaeger
Description Tau Boo is the first star other than the Sun which has been observed to have a global magnetic field with switching polarity. In contrast to the Sun, Tau Boo.s magnetic cycle has a duration of only two years. We propose to monitor the star in four short EPIC exposures of 8~ks each, backing up these X-ray observations with ongoing measurements of its magnetic field. This will allow us to compare X-ray luminosities and coronal temperatures derived from EPIC spectra to the magnetic field configuration of Tau Boo.
Publication A magnetic cycle of tau Bootis? The coronal and chromospheric view . Poppenhaeger, K., Gunther, H. M., . AN . 333-26 . 2012 . 2012AN....333...26P ,
XMM-Newton publication statistics . Ness, J.-U., Parmar, A. N., et all. . AN . 335-210 . 2014 . 2014AN....335..210N ,
Ensemble X-ray variability of active galactic nuclei. II. Excess variance and updated structure function . Vagnetti, F., Middei, R., et all. . A&A . 593-55 . 2016 . 2016A&A...593A..55V ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
A new sample of X-ray selected narrow emission-line galaxies. II. Looking for True Seyfert 2 . Pons, E., Watson, M. G., . A&A . 594-72 . 2016 . 2016A&A...594A..72P ,
Four-month chromospheric and coronal activity cycle in tau Bootis . Mittag, M., Robrade, J., et all. . A&A . 600-119 . 2017 . 2017A&A...600A.119M ,
Discovery of a 23.8 h QPO in the Swift light curve of XMMU J134736.6+173403 . Carpano, S., Jin, C., . MNRAS . 477-3178 . 2018 . 2018MNRAS.477.3178C ,
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2010-06-19T10:27:27Z/2011-01-23T03:00:19Z
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 2012-02-09T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2012-02-09T00:00:00Z, 065114, 17.56_20190403_1200. https://doi.org/10.5270/esa-ruvjqdp