A dataset provided by the European Space Agency

Name 067038
Title Maunder minimum stars: How frequent are they ?
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0670380101
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0670380301
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0670380401
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0670380501
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0670380601

DOI 10.5270/esa-eqdwv2r
Author Prof Jurgen Schmitt
Description The exceptional low activity of the Sun during the Maunder minimum period between 1650 - 1715 is still an unsolved astrophysical puzzle; the appearance of solar activity during that period is of major interest both for solar physicists and climatologists. Searches for stellar analogs of the Maunder minimum Sun have had only mixed success and it is controversial how common Maunder minimum stars really are. We propose to carry out a sensitive X-ray survey of extremely low activity stars in the immediate solar neighborhood to investigate whether these stars are ..flat-activity.. objects or show cyclic behavior similar to the Sun.
Publication 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 ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
An improved age-activity relationship for cool stars older than a gigayear . Booth, R. S., Poppenhaeger, K., et all. . MNRAS . 471-1012 . 2017 . 2017MNRAS.471.1012B ,
The Relative Emission from Chromospheres and Coronae: Dependence on Spectral Type and Age . Linsky, Jeffrey L., Wood, Brian E., et all. . ApJ . 902-3 . 2020 . 2020ApJ...902....3L ,
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2011-10-08T04:35:45Z/2012-02-05T23:54:58Z
Version PPS_NOT_AVAILABLE
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 2013-02-25T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-02-25T00:00:00Z, 067038, PPS_NOT_AVAILABLE. https://doi.org/10.5270/esa-eqdwv2r