A dataset provided by the European Space Agency

Name 084164
Title Using XMM-Newton to study a massive white dwarf merger


DOI https://doi.org/10.5270/esa-5ntxdcj
Author Dr Lidia Oskinova
Description We propose a 25 ks observation of a recently discovered unique hydrogen- and helium-free hot star, Cas J005311, with a record wind velocity of 5 per cent of the speed of light. Cas J005311 is likely a super-Chandrasekhar mass carbon-oxygen white dwarf which is a result of a merger. We propose a decisive detection experiment aimed to verify the theory of magnetically supported winds from fast rotating supermassive white dwarfs. The XMM-Newton discovery of X-rays from Cas J005311 will have profound consequences for our understanding of white dwarf mergers and the origin of fast-rotating and magnetic stars.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2019-07-08T02:32:57Z/2019-07-24T07:19:47Z
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 2020-08-21T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2020-08-21T22:00:00Z, 084164, 17.56_20190403_1200. https://doi.org/10.5270/esa-5ntxdcj