A dataset provided by the European Space Agency

Name 011137
Title GT Observations of Active Cool Stars: AR Lac
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111370101

DOI 10.5270/esa-pzhdmcf
Author Dr Albert Brinkman
Description GT-AR Lac is a fully eclipsing RS CVn binary system with extremely active coronae on both stars. Previous missions have found a prominent X-ray minimum around the optical primary eclipse when the G star is occulted, and a shallow minimum around secondary eclipse. We propose here to study one ingress to or one egress from the primary eclipse. We will use the EPIC cameras to obtain a light curve in unprecedented detail, the RGS combined with the EPICs to determine time-dependent emission measure distributions and abundances, and the RGS to search for time-height-dependent densities. Simultaneous optical and radio observations will be proposed. One EPIC MOS will be operated in TIMING-medium filter mode, while the pn will observe with the SML window and thick filter.
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Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-12-05T18:36:04Z/2001-12-06T03:33:49Z
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 2003-02-08T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2003-02-08T00:00:00Z, 011137, 17.56_20190403_1200. https://doi.org/10.5270/esa-pzhdmcf