XMM-Newton observations of the X-ray soft polar QS Telescopii

  title={XMM-Newton observations of the X-ray soft polar QS Telescopii},
  author={Iris Traulsen and Klaus Reinsch and Axel Schwope and Vadim Burwitz and Stefan Dreizler and Robert Schwarz and Frederick M. Walter},
  journal={Astronomy and Astrophysics},
Context. On the basis of XMM-Newton observations, we investigate the energy balance of selected magnetic cataclysmic variables, which have shown an extreme soft-to-hard X-ray flux ratio in the ROSAT All-Sky Survey. Aims. We intend to establish the X-ray properties of the system components, their flux contributions, and the accretion geometry of the X-ray soft polar QS Tel. In the context of high-resolution X-ray analyses of magnetic cataclysmic variables, this study will contribute to better… 

Figures and Tables from this paper

Phase-resolved X-ray spectroscopy and spectral energy distribution of the X-ray soft polar RS Caeli

RS Cae is the third target in our series of XMM-Newton observations of soft X-ray-dominated polars. Our observational campaign aims to better understand and describe the multiwavelength data, the

POLAR project: a numerical study to optimize the target design

Modern high-energy density facilities allow us to bring matter to extreme states of density, temperature and velocity. Rigorous scaling laws proved that the relevant regimes could be reached, and



X-ray spectroscopy and photometry of the long-period polar AI Trianguli with XMM-Newton

Context. The energy balance of cataclysmic variables with strong magnetic fields is a central subject in understanding accretion processes on magnetic white dwarfs. With XMM-Newton, we perform a

XMM‐Newton observations of the asynchronous polar BY Cam

We report observations of the asynchronous polar BY Cam made using XMM-Newton .W e find evidence for two accretion regions which have significantly different spectra. In both regions we find evidence

XMM-Newton observation of the long-period polar V1309 Orionis: the case for pure blobby accretion

Using XMM-Newton we have obtained the first continuous X-ray observation covering a complete orbit of the longest period polar, V1309 Ori. The X-ray light curve is dominated by a short, bright phase


We present the results of ROSAT pointed observations of the AM Her stars AN UMa and MR Ser. AN UMa was in a high-brightness state. We examine its soft X-ray light curve, and fit its spectrum with a

Multi‐epoch Doppler tomography and polarimetry of QQ Vul

ABSTRA C T We present multi-epoch high-resolution spectroscopy and photoelectric polarimetry of the long-period polar (AM Herculis star) QQ Vul. The blue emission lines show several distinct

The Three-dimensional Structure of Extreme-Ultraviolet Accretion Regions in AM Herculis Stars: Modeling of Extreme-Ultraviolet Photometric and Spectroscopic Observations

We have developed a model of the high-energy accretion region for magnetic cataclysmic variables and applied it to Extreme Ultraviolet Explorer observations of 10 AM Herculis type systems. The major

Einstein observations of EF Eridani (2A 0311-227) - The textbook example of AM Herculis-type systems

Hard and soft X-ray spectra of the AM Herculis star EF Eridani obtained with the Einstein Observatory are found to be fitted by a thermal bremsstrahlung spectrum with kT of about 20 keV, and a

The ROSAT view of the cataclysmic variable sky

Discovery of an EUV-bright polar in the period gap from the ROSAT Wide Field Camera sky survey

We report the discovery of a new polar found during the all-sky survey of extreme-UV sources conducted by the UK Wide Field Camera on board ROSAT. The V∼16 object is the brightest EUV polar observed

Extreme ultraviolet light curves of UZ Fornacis: Evidence for accretion stream absorption and vertical extent of the accretion spot

We report on two pointed observations of UZ For carried out by the imaging photometers aboard the Extreme Ultraviolet Explorer (EUVE), one as part of the EUVE Right Angle Program and one as an