A dataset provided by the European Space Agency

Name 078207
Title Magnetic Flux and Coronal X-ray Emission in the Late Stages of Stellar Evolution


DOI https://doi.org/10.5270/esa-4vrmpoe
Author Dr Rodolfo Montez
Description Surface magnetic fields strengths of 2-10 G have been measured from the evolved stars chi Cyg and U Mon. These measurements support the notion that large-scale magnetic fields thread the circumstellar environment of asymptotic giant branch (AGB) and post-AGB stars. Magnetic fields are possible triggers of the superwind phase of AGB stars and asymmetric shaping of mass loss into the post-AGB phase. The low surface magnetic field strengths imply X-ray fluxes that are within reach of deep XMM exposures. We propose XMM X-ray observations of these two evolved stars to detect their predicted low level X-ray emission and establish a coronal origin for any X-ray emission. Ultimately, these observations provide insight into the evolution of stellar magnetic processes.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2016-05-04T12:04:29Z/2016-10-24T04:20:06Z
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 2017-11-11T23:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2017-11-11T23:00:00Z, 078207, 17.56_20190403_1200. https://doi.org/10.5270/esa-4vrmpoe