A dataset provided by the European Space Agency

Name 076104
Title Fast stochastic variability in CV variable MV Lyr and source identification


DOI https://doi.org/10.5270/esa-ncdmwfo
Author Dr Andrej Dobrotka
Description Some cataclysmic variables exhibit a multicomponent power density spectrum of fast variability. High-cadence long-term Kepler data of MV Lyr showed 4 different characteristic components, while XMM X-ray observations of RU Peg in quiescence contained two different components. Modelling studies suggest a variety of accreting disc structures as the source of variability. However, we still depend on speculations because the source identification is not unambiguous without combined optical and X-ray observations of the same system. Since it is technically impossible to obtain optical Kepler data of RU Peg, we propose to observe MV Lyr in X-rays and UV with XMM. The goal is to search for the two highest break frequencies found in the Kepler data.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2015-09-06T15:06:43Z/2015-09-07T09:03:23Z
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 2016-09-28T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2016-09-28T22:00:00Z, 076104, 17.56_20190403_1200. https://doi.org/10.5270/esa-ncdmwfo