A dataset provided by the European Space Agency

Name 011147
Title GT Observations of Active Cool Stars: Sigma2 CrB
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111470101
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111470201
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111470301

DOI 10.5270/esa-h61dhje
Author Dr Albert Brinkman
Description GT-sigma2 CrB = TZ CrB is an active RS CVn binary consisting of two early main- sequence G stars, locked in synchronous rotation. The rapid rotation induces strong magnetic activity that is thought of as enhanced activity of two spun-up Suns. We propose to observe sigma CrB for 40 ks to investigate the composition of its quiescent corona and, if flares are seen, to follow the density, plasma velocity, temperature, and abundance histories during evaporation and cooling processes with the RGS and the EPICs. To avoid saturation, the pn and one MOS camera will be used in TIMING mode, both with the medium filter. Coordinated radio VLA and spatially resolved VLBA-VLBI as well as optical observations are planned to study the geometry and energy balance of sigma CrB.s atmosphere.
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Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-08-29T11:03:13Z/2002-02-23T05:47:05Z
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 2003-03-16T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2003-03-16T00:00:00Z, 011147, 17.56_20190403_1200. https://doi.org/10.5270/esa-h61dhje