A dataset provided by the European Space Agency

Name 076029
Title Coronal activity cycles in solar analog stars


DOI https://doi.org/10.5270/esa-ufts7ws
Author Dr Fabio Favata
Description The present monitoring program to identify and study for the first time the cyclic behavior of the coronal emission of stars similar to our Sun has been ongoing since XMM.s AO-1. Five stars in three stellar systems have been monitored at regular cadence for over a decade, providing the first clear evidence of long-term cycles in the coronal activity of normal stars, with amplitudes of up to an order of magnitude in X-ray luminosity. The present proposal requests continuation of the monitoring program into AO-14. Our best observed targets, HD81809 and 61Cyg A, have both been observed through more than a full cycle, while a cycle is starting to become evident in the observations of a Cen B.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2015-05-19T21:52:20Z/2016-04-25T12:27:17Z
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 2017-05-12T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2017-05-12T22:00:00Z, 076029, 17.56_20190403_1200. https://doi.org/10.5270/esa-ufts7ws