4 papers · 1 filter
The population of black widow pulsars
A. R. King, M. E. Beer, D. J. Rolfe +2
We consider the population of black widow pulsars (BWPs). The large majority of these are members of globular clusters. For minimum companion masses < 0.1 Msun, adiabatic evolution…
Multi-epoch Spectroscopy of IY UMa: Quiescence, Rise, Normal Outburst & Superoutburst
Daniel J. Rolfe, Carole A. Haswell, Timothy M. C. Abbott +3
We exploit rare observations covering the time before and during a normal outburst in the deeply-eclipsing SU UMa system IY UMa to study the dramatic changes in the accretion flow…
A New Evolutionary Channel for Type Ia Supernovae
A. R. King, D. J. Rolfe, K. Schenker
We show that long-period dwarf novae offer a promising route for making Type Ia supernovae. For typical dwarf nova duty cycles d ~ 0.1 - 0.01, mass is accreted by the white dwarf m…
Doppler Tomography of Dwarf Nova IY UMa during Quiescence
Daniel J. Rolfe, Timothy M. C. Abbott, Carole A. Haswell
Quiescent Doppler tomography of the newly discovered deeply-eclipsing SU UMa system IY UMa reveals properties of the region where the accretion stream from the donor impacts the ed…