9 papers
Discovery of the first outbursting hot subdwarf binary: ZTF J0007+4804
E. Stringer, T. Kupfer, K. Deshmukh +10
Hot subdwarf binaries with white dwarf companions with orbital periods of less than two hours are progenitor candidates for massive single white dwarfs as well as a variety of ther…
ZTF J021804.16+071152.93: a dead cataclysmic variable and potential solution to the missing period bouncers
S. G. Parsons, A. J. Brown, S. L. Casewell +22
It is predicted that half or more of all cataclysmic variables (CVs) should have evolved past the period minimum and now exist as so-called "period bouncers" where a white dwarf sh…
Photometric masses for long period CVs: the case study of CSS131106
M. Das, S. P. Littlefair, S. G. Parsons +15
We present high-speed photometry of the eclipsing cataclysmic variable CSS131106 J052412+004148. We determine the system parameters by modelling the eclipse lightcurve using the ph…
Scrutinizing the 2020 multiwavelength outburst of PKS 0903-57 through observations with H.E.S.S
A. Acharyya, F. Aharonian, F. Ait Benkhali +138
The blazar PKS 0903-57 has recently been classified as a flat spectrum radio quasar at a redshift of . In March and April 2020, Fermi-LAT and AGILE reported tremendous ac…
Constraints on an optical counterpart for the long-period radio transient GPM J1839-10
Ingrid Pelisoli, A. J. Brown, N. Castro Segura +14
Long period radio transients (LPTs) are periodic radio sources showing pulsed emission on timescales from minutes to hours. The underlying sources behind this emission are currentl…
A Sibling of AR Scorpii: SDSS J230641.47244055.8 and the Observational Blueprint of White Dwarf Pulsars
N. Castro Segura, I. Pelisoli, B. T. Gänsicke +21
Radio pulsating white dwarf (WD) systems, known as WD pulsars, are non-accreting binary systems where the rapidly spinning WD interacts with a low-mass companion producing pulsed n…