A recently-discovered intermediate polar, CTCV J2056-3014, has the shortest spinperiod (29.6 sec)among all CVs and white dwarfs. Fast-spinning CVs are extremely rare and uniqueas manifested by AR Sco (the white dwarf pulsar) and AE Aqr which spins down viathe propeller effect. The proposed XMM + NuSTAR observation will allow us tofully explorethe X-ray spectral and timing properties of this remarkable CV. Our primarygoals are(1) determining its white dwarf mass accurately for testing the stabilitycondition of fast-spinning WDs, (2) detecting a weak, neutral Fe K-alpha line as a signature of tall accretion column, and (3) search for non-thermal X-ray pulsation such as found from AR Sco.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2022-10-23T23:09:07Z/2022-10-24T14:15:47Z
Version
20.09_20221024_1724
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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.
European Space Agency, Ms Shifra Mandel, 2023, 'X-ray study of new cataclysmic variable with the fastest-spinning white dwarf', 20.09_20221024_1724, European Space Agency, https://doi.org/10.57780/esa-30fyujc
