The present program to detect and study for the first time solar-like cycles inthe X-ray emission of stars similar to our Sun has been ongoing since XMM sAO-1. Five targets in three stellar systems have been monitored from 2001,providing for the first time clear evidence of long-term cycles in the X-rayluminosity of normal stars, with variations in X-ray luminosity of up to anorder of magnitude. The present proposal requests continuation of the ongoingmonitoring program into XMM AO-8, needed to progress toward fullcharacterization of the coronal cycle for our targets. The most observed of ourtargets (HD 81809) will enter its cycle maximum during the XMM AO-8 period, andgiven the higher variability expected at maximum, we request a more frequent sampling for this target.
Publications
Coronal activity cycles in nearby G and K stars. XMM-Newton monitoring of 61 Cygni and alpha Centauri |Robrade, J., Schmitt, J. H. M. M., | A&A | 543-84 | 2012 | 2012A&A...543A..84R | http://ui.adsabs.harvard.edu/#abs/2012A&A...543A..84R
A solar-like magnetic cycle on the mature K-dwarf 61 Cygni A (HD 201091) |Boro Saikia, S., Jeffers, S. V., et al. | A&A | 594-29 | 2016 | 2016A&A...594A..29B | http://ui.adsabs.harvard.edu/#abs/2016A&A...594A..29B
Fifteen years in the high-energy life of the solar-type star HD 81809. XMM-Newton observations of a stellar activity cycle |Orlando, S., Favata, F., et al. | A&A | 605-19 | 2017 | 2017A&A...605A..19O | http://ui.adsabs.harvard.edu/#abs/2017A&A...605A..19O
Deconvolving the HD 81809 Binary: Rotational and Activity Evidence for a Subgiant with a Sun-like Cycle |Egeland, Ricky, | ApJ | 866-80 | 2018 | 2018ApJ...866...80E | http://ui.adsabs.harvard.edu/#abs/2018ApJ...866...80E
Eight Years of TIGRE Robotic Spectroscopy: Operational Experience and Selected Scientific Results |Gonz\\u00e1lez-P\\u00e9rez, Jos\\u00e9 Nicol\\u00e1s, Mittag, Marco, et al. | FrASS | 9-912546 | 2022 | 2022FrASS...9.2546G | http://ui.adsabs.harvard.edu/#abs/2022FrASS...9.2546G
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
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
2009-05-24T23:00:31Z/2010-05-01T03:03:47Z
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.
European Space Agency, Dr Fabio Favata, 2011, 'Coronal activity cycles in solar analog stars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-xum1bx0
