A dataset provided by the European Space Agency

Name: Coronal Cycles of 61 Cyg and HR 3625
Published: 2005-09-09T00:00:00Z

Proposal ID	004174
Title	Coronal Cycles of 61 Cyg and HR 3625
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0041740101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0041740301 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0041740801 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0041740901 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0041741001 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0041741101
DOI	https://doi.org/10.5270/esa-w4ej149
Principal Investigator, PI	Dr Alexander Hempelmann
Abstract	Although the coronal X-ray emission is the most powerful indicator of a stellarmagnetic field the observation of coronal cycles has remained as an open task.Hempelmann et al. (1995) find indications for the existence of coronal cyclesin stars other than the Sun from statistical considerations. The scientificgoal of this proposal is to search for the existence of coronal cycles of stars. We started in 1994 with pointed HRI observations of 61 Cyg and HR 3625 to follow their activity cycles over the ROSAT A0-5, AO-6, AO-7 and AO-8 periods. The ROSAT light curves show systematic long-term variations whichsuggest X-ray activity cycles. We want to continue these time series with EPICXMM to cover a full cycle period.
Publications	The XMM-Newton serendipitous survey. V. The Second XMM-Newton serendipitous source catalogue \|Watson, M. G., Schroder, A. C., et al. \| A&A \| 493-339 \| 2009 \| 2009A&A...493..339W \| http://ui.adsabs.harvard.edu/#abs/2009A&A...493..339W Statistical evaluation of the flux cross-calibration of the XMM-Newton EPIC cameras \|Mateos, S., Saxton, R. D., et al. \| A&A \| 496-879 \| 2009 \| 2009A&A...496..879M \| http://ui.adsabs.harvard.edu/#abs/2009A&A...496..879M The XMM Cluster Survey: optical analysis methodology and the first data release \|Mehrtens, Nicola, Romer, A. Kathy, et al. \| MNRAS \| 423-1024 \| 2012 \| 2012MNRAS.423.1024M \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.423.1024M Coronal activity cycles in 61 Cygni \|Hempelmann, A., Robrade, J., et al. \| A&A \| 460-261 \| 2006 \| 2006A&A...460..261H \| http://ui.adsabs.harvard.edu/#abs/2006A&A...460..261H Neon and oxygen in low activity stars: towards a coronal unification with the Sun \|Robrade, J., Schmitt, J. H. M. M., \| A&A \| 486-995 \| 2008 \| 2008A&A...486..995R \| http://ui.adsabs.harvard.edu/#abs/2008A&A...486..995R An All-Sky Atlas of Radio/X-ray Associations \|Flesch, E., \| PASA \| 27-283 \| 2010 \| 2010PASA...27..283F \| http://ui.adsabs.harvard.edu/#abs/2010PASA...27..283F 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 The XMM Cluster Survey: X-ray analysis methodology \|Lloyd-Davies, E. J., Romer, A. Kathy, et al. \| MNRAS \| 418-14 \| 2011 \| 2011MNRAS.418...14L \| http://ui.adsabs.harvard.edu/#abs/2011MNRAS.418...14L An XMM-Newton Survey of the Soft X-Ray Background. II. An All-Sky Catalog of Diffuse O VII and O VIII Emission Intensities \|Henley, David B., Shelton, Robin L., \| ApJS \| 202-14 \| 2012 \| 2012ApJS..202...14H \| http://ui.adsabs.harvard.edu/#abs/2012ApJS..202...14H The XMM-Newton serendipitous ultraviolet source survey catalogue \|Page, M. J., Brindle, C., et al. \| MNRAS \| 426-903 \| 2012 \| 2012MNRAS.426..903P \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.426..903P Automatic Classification of Time-variable X-Ray Sources \|Lo, Kitty K., Farrell, Sean, et al. \| ApJ \| 786-20 \| 2014 \| 2014ApJ...786...20L \| http://ui.adsabs.harvard.edu/#abs/2014ApJ...786...20L 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 Sunyaev-Zel.dovich effect or not? Detecting the main foreground effect of most galaxy clusters \|Xiao, Weike, Chen, Chen, et al. \| MNRAS \| 432-41 \| 2013 \| 2013MNRAS.432L..41X \| http://ui.adsabs.harvard.edu/#abs/2013MNRAS.432L..41X A survey of stellar X-ray flares from the XMM-Newton serendipitous source catalogue: HIPPARCOS-Tycho cool stars \|Pye, J. P., Rosen, S., et al. \| A&A \| 581-28 \| 2015 \| 2015A&A...581A..28P \| http://ui.adsabs.harvard.edu/#abs/2015A&A...581A..28P The Interaction of the Fermi Bubbles with the Milky Way.s Hot Gas Halo \|Miller, Matthew J., Bregman, Joel N., \| ApJ \| 829-9 \| 2016 \| 2016ApJ...829....9M \| http://ui.adsabs.harvard.edu/#abs/2016ApJ...829....9M 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 Comparison of Damped Oscillations in Solar and Stellar X-Ray flares \|Cho, I.-H., Cho, K.-S., et al. \| ApJ \| 830-110 \| 2016 \| 2016ApJ...830..110C \| http://ui.adsabs.harvard.edu/#abs/2016ApJ...830..110C 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 Anisotropy of the galaxy cluster X-ray luminosity-temperature relation \|Migkas, Konstantinos, Reiprich, Thomas H., \| A&A \| 611-50 \| 2018 \| 2018A&A...611A..50M \| http://ui.adsabs.harvard.edu/#abs/2018A&A...611A..50M The XMM Cluster Survey: Present status and latest results \|Viana, P. T. P., Mehrtens, N., et al. \| AN \| 334-462 \| 2013 \| 2013AN....334..462V \| http://ui.adsabs.harvard.edu/#abs/2013AN....334..462V Testing emergent gravity on galaxy cluster scales \|Tamosiunas, Andrius, Bacon, David, et al. \| JCAP \| 5-53 \| 2019 \| 2019JCAP...05..053T \| http://ui.adsabs.harvard.edu/#abs/2019JCAP...05..053T Chandra Follow-up of the SDSS DR8 Redmapper Catalog Using the MATCha Pipeline \|Hollowood, Devon L., Jeltema, Tesla, et al. \| ApJS \| 244-22 \| 2019 \| 2019ApJS..244...22H \| http://ui.adsabs.harvard.edu/#abs/2019ApJS..244...22H Stellar mass as a galaxy cluster mass proxy: application to the Dark Energy Survey redMaPPer clusters \|Palmese, A., Annis, J., et al. \| MNRAS \| 493-4591 \| 2020 \| 2020MNRAS.493.4591P \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.493.4591P An X-Ray- and SZ-bright Diffuse Source toward M31: A Local Hot Bridge \|Qu, Zhijie, Huang, Rui, et al. \| ApJ \| 907-14 \| 2021 \| 2021ApJ...907...14Q \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...907...14Q Stellar Chromospheric Activity \|Hall, Jeffrey C., \| LRSP \| 5-2 \| 2008 \| 2008LRSP....5....2H \| http://ui.adsabs.harvard.edu/#abs/2008LRSP....5....2H 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 Solar Cycle Temporal Variation of the Solar Wind Charge Exchange X-Ray Lines \|Qu, Zhijie, Koutroumpa, Dimitra, et al. \| ApJ \| 930-21 \| 2022 \| 2022ApJ...930...21Q \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...930...21Q 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 A Statistical Study of Soft X-Ray Flares on Solar-type Stars \|Zhao, Z. H., Hua, Z. Q., et al. \| ApJ \| 961-130 \| 2024 \| 2024ApJ...961..130Z \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...961..130Z 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	2002-05-14T09:43:04Z/2004-05-01T19:20:02Z
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	2005-09-09T00:00:00Z
Keywords	"stellar magnetic field", "rosat a0", "coronal xray emission", "XMM", "xray activity cycles", "term variations", "coronal cycles", "time series", "hr 3625", "statistical considerations", "rosat light curves", "epic xmm", "EPIC", "activity cycles", "ROSAT", "cycle period"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Alexander Hempelmann, 2005, 'Coronal Cycles of 61 Cyg and HR 3625', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-w4ej149