The eclipsing, long-period polar V1309 Ori is one of the most peculiar magneticCVs. Most of its luminosity is radiated as flared soft X-rays, with nodomintating contribution of a hot thermal plasma from the shock column above thewhite dwarf. Therefore V1309 Ori is the only clear-cut case of pure blobbyaccretion, where the impact mechanisms and radiation processs of a singleaccretion blob can be studied in detail. We propose one pointing of 60 ksec tocover two orbital cycles to collect data for around 300-600 flares.Primary aimis to derive a significant correlation between several important blob parameterslike mass, temperature and length. Using this we will be able to discern betweendifferent impact mechanisms.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2013-03-16T20:33:50Z/2013-03-17T16:49:09Z
Version
17.56_20190403_1200
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, Dr Robert Schwarz, 2014, 'A long look at V1309 Ori:Towards an understand of the blobby accretion proces', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-jkbsibf
