66 citations · 133 across the 10 of their papers we have counts for
5 papers · 1 filter
The puzzling story of flare inactive ultra fast rotating M dwarfs -- III. Investigating X-ray Activity
Lauren Doyle, George W. King, Gavin Ramsay +4
According to activity-rotation relations, rapid rotators are expected to show high levels of magnetic activity. However, recent studies with TESS have found Ultra Fast Rotating (UF…
V Sge: Supersoft Source or Exotic Hot Binary? I. An X-Shooter campaign in the high state
Pasi Hakala, Phil Charles, Pablo Rodríguez-Gil
V Sge is a peculiar, highly luminous long-period (12.34h) binary star that can display a super-soft X-ray emitting component when in the faint phase of its V~ 10-13mag variability…
A Link Between White Dwarf Pulsars and Polars: Multiwavelength Observations of the 9.36-Minute Period Variable Gaia22ayj
Antonio C. Rodriguez, Kareem El-Badry, Pasi Hakala +30
White dwarfs (WDs) are the most abundant compact objects, and recent surveys have suggested that over a third of WDs in accreting binaries host a strong (B 1 MG) magnetic…
The mass of the white dwarf in YY Dra (=DO Dra): Dynamical measurement and comparative study with X-ray estimates
Ayoze Álvarez-Hernández, Manuel A. P. Torres, Tariq Shahbaz +7
We present a dynamical study of the intermediate polar cataclysmic variable YY Dra based on time-series observations in the band, where the donor star is known to be the major…
Phase-resolved optical and X-ray spectroscopy of low-mass X-ray binary X1822-371
A. Somero, P. Hakala, P. Muhli +2
(Abridged) X1822-371 is the prototypical accretion disc corona X-ray source, a low-mass X-ray binary viewed at very high inclination, thereby allowing the disc structure and extend…