Published June 1996
by Springer-Verlag Telos .
Written in English
|The Physical Object|
|Number of Pages||347|
Observations with X-ray satellite ROSAT over the past 5 years have established supersoft X-ray sources as a new class of objects in our Galaxy and beyond. Optical follow-up observations have revealed the binary nature of several of them. The study of thousands of supersoft x-ray sources in a wide range of galactic environments has allowed us to establish the statistics of the class while at the same time identifying its most extreme and intriguing members. Catalog of Supersoft X-ray Sources. After the discovery of supersoft X-ray sources with Einstein Observatory observations, the ROSAT satellite with its PSPC detector has discovered about four dozen new supersoft sources and has thus established luminous supersoft X-ray sources (SSS) as a new class of by:
We present new X-ray data with an improved position for the supersoft X-ray source RXJ–, and propose a candidate for the optical identification. The source was initially designated as RXJ– because there was a high uncertainty in the position, at the edge of the field of the ROSAT PSPC (Orio & Ögelman ). More than supersoft X-ray sources (SSS) are reported in ∼20 external galaxies, the Magellanic Clouds (MCs) and our Galaxy. The effective temperatures of the brighter SSS are ∼20– eV. SSS with luminosities below ≈3 × 10 38 erg s −1 are consistent with accreting white dwarfs (WDs) with steady nuclear burning or by: A Systematic Search for Supersoft X-Ray Sources in the ROSAT All-Sky Survey J. Greiner A Search for Optical Counterparts to Supersoft X-Ray Sources in the ROSAT Pointed Database CM. Becker, R. Remillard, S.A. Rappaport Part VII Catalog of Supersoft X-Ray Sources Catalog of Luminous Supersoft X-Ray Sources J. Greiner Part VIII Appendix. binary supersoft X-ray sources (SSSs), observed to have temperatures of a few×K and luminosities on the order of erg/s. These and other types of SSSs are expected to be capable of ionizing their surrounding circumstellar medium; however, to date only one such nebula was detected in the Large Magellanic Cloud (of its 6 known close-.
Supersoft X-ray sources in M31 Marina Orio INAF-Padova and U Wisconsin In collaboration with Tommy Nelson Supersoft X-ray sources in M everywhere Analysis of XMM-Newton-Chandra-LGS(WIYN)-Galex archival images We examined 78 objects - a statistically significant sample (including SNR, excluding uncertain detections/mixed spectra states) 5 new SSS and 3 (not published) novae in XMM . A luminous supersoft X-ray source (SSXS, or SSS) is an astronomical source that emits only low energy (i.e., soft) X-rays. Soft X-rays have energies in the to keV range, whereas hard X-rays are in the 1–20 keV range. SSSs emit few or no photons with energies above 1 keV, and most have effective temperature below eV. This means that the radiation they emit is highly ionizing and is . Summary: Observations with the X-ray satellite ROSAT have established supersoft X-ray sources as a new class of objects in our galaxy and beyond. This work provides an overview of the recent observational discoveries, and describes relations between supersoft sources . At these soft energies, the HRI count rates are typically a factor of smaller than those of the PSPC (David et al. , Greiner et al. a). Since , some of the brightest supersoft X-ray sources have been also observed with the low-energy concentrator spectrometer (LECS) onboard BeppoSAX.