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Models for the Observable System Parameters of Ultraluminous X-ray Sources
N. Madhusudhan, S. Rappaport, Ph. Podsiadlowski +1
We investigate the evolution of the properties of model populations of ultraluminous X-ray sources (ULXs) consisting of a black-hole accretor in a binary with a donor star. We have…
Upper limit for circumstellar gas around the Type Ia SN 2000cx
F. Patat, S. Benetti, S. Justham +8
The nature of the companion stars in Type Ia Supernova (SNe) progenitor systems remains unclear. One possible way to discriminate between different scenarios is the presence (or ab…
Binary Stars as the Source of the Far-UV Excess in Elliptical Galaxies
Zhanwen Han, Philipp Podsiadlowski, Anthony E. Lynas-Gray
The discovery of an excess of light in the far-ultraviolet (UV) spectrum in elliptical galaxies was a major surprise in 1969. While it is now clear that this UV excess is caused by…
Remnant evolution after a carbon-oxygen white dwarf merger
Sung-Chul Yoon, Philipp Podsiadlowski, Stephan Rosswog
We systematically explore the evolution of the merger of two carbon-oxygen (CO) white dwarfs. The dynamical evolution of a 0.9 Msun + 0.6 Msun CO white dwarf merger is followed by…
A binary model for the UV-upturn of elliptical galaxies (MNRAS version)
Z. Han, Ph. Podsiadlowski, A. E. Lynas-Gray
The discovery of a flux excess in the far-ultraviolet (UV) spectrum of elliptical galaxies was a major surprise in 1969. While it is now clear that this UV excess is caused by an o…
A Binary Model for the UV-upturn of Elliptical Galaxies
Z. Han, Ph. Podsiadlowski, A. E. Lynas-Gray +1
The discovery of an excess of light in the far-ultraviolet (UV) in 1969 in elliptical galaxies was a major surprise. While it is now clear that this UV excess (UV-upturn) is probab…
The Triple-Ring Nebula around SN1987A: Fingerprint of a binary merger
T. Morris, Ph. Podsiadlowski
Supernova 1987A, the first naked-eye supernova observed since Kepler's supernova in 1604, defies a number of theoretical expectations. Its anomalies have long been attributed to a…