64 citations · 133 across the 10 of their papers we have counts for
10 papers
The recurrent nova U Scorpii - an evolutionary considerations
Marek J. Sarna, Ene Ergma, Jelena Greskevits
We perform evolutionary calculations of binary stars to find progenitors of systems with parameters similar to the recurrent nova U Sco. We show that a U Sco-type system may be for…
Eclipsing binary millisecond pulsar PSR J1740-5340 -- evolutionary considerations and observational test
Ene Ergma, Marek J. Sarna
We perform evolutionary calculations for a binary system with initial parameters: = 1 and = 1.4 and = 1.27 d to produce observ…
Is KPD 1930+2752 a good SN Ia progenitor?
E. Ergma, A. V. Fedorova, L. R. Yungelson
We investigate the evolution of a binary system which initially has an orbital period of 2^h 17^m and contains a 0.5 M_sun helium star with a white dwarf companion of 0.97 M_sun, s…
What can we learn from the surface chemical composition of the optical companions of Soft X-ray transients?
Ene Ergma, Marek J. Sarna
Several evolutionary sequences with low--mass secondaries (=1.25, 1.5 and 1.7) and black hole accretors (=5 and 10) are calculated. The angular…
The eclipsing binary millisecond pulsar PSR B1744-24A - possible test for a magnetic braking mechanism
Ene Ergma, Marek J. Sarna
As presented by Nice et al. (2000), long-term timing of the eclipsing binary PSR B1744-24A shows that the orbital period of this system decreases with a time-scale of only ~ 200 My…
An evolutionary scenario for the U Scorpii
Ene Ergma, Jelena Gerskevits, Marek J. Sarna
We perform evolutionary calculations of binary stars to find progenitors of systems with parameters similar to the recurrent novae U Sco. We show that a U Sco type-system may be fo…