A dataset provided by the European Space Agency

Name 011154
Title GT Observations of Active Cool Stars: Alpha CrB
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111540101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111540201

DOI https://doi.org/10.5270/esa-07e8e7g
Author Dr Albert Brinkman
Description GT-Alpha CrB is a binary system consisting of an X-ray dark A star and an X-ray luminous main-sequence mid-G star. Every 17.4 days, the A star eclipses the G star completely. The eclipse is ideal to infer the distribution of X-ray emitting plasma and to infer extent and structure of an active G-star corona. The proposed observation covers one full G star eclipse. The eclipse timing will be combined with previous ROSAT and, if approved, future XMM observations to measure the general relativistic apsidal motion of the system. To avoid optical contamination, the EPICs will use the thick filter. One MOS and the pn use TIMING mode. This is a phase-critical observation. EPIC is the prime instrument.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-01-13T13:33:39Z/2001-08-27T14:37:29Z
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 2015-07-04T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2015, 011154, 17.56_20190403_1200. https://doi.org/10.5270/esa-07e8e7g