|Is NR TrA a Persistent SSS Source?
|Prof Frederick Walter
|Nova TrA 2008 (NR TrA) has evolved into an eclipsing system dominated by high excitation permitted lines. The light curve resembles that of V Sge, with a broad minimum covering close to half the 5.25 hour period. The high excitation lines and the blue continuum both eclipse. Optical spectra of NR TrA and the V Sge stars resemble persistent supersoft sources like Cal 83 in the high optical (low X-ray) state, and may all be powered by white dwarfs undergoing steady nuclear burning on their surfaces. We propose an observation of NR TrA to obtain the X-ray and UV light curves. Combined with the optical light curve and phase-resolved spectroscopy, we can map the distribution of hot gas in the system and, using tomographic techniques, make a complete geometric model of the system.
|No observations found associated with the current proposal
|EMOS1, EMOS2, EPN, OM, RGS1, RGS2
|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.
|Publisher And Registrant
|European Space Agency
|European Space Agency, 2018, 078205, 17.56_20190403_1200. https://doi.org/10.5270/esa-ia72u06