296 citations · 3.5k across the 106 of their papers we have counts for
106 papers
Strong magnetic fields of old white dwarfs are symmetric about the stellar rotation axes
S. Bagnulo, J. D. Landstreet
Many magnetic white dwarfs exhibit a polarised spectrum that periodically varies as the star rotates because the magnetic field is not symmetric about the rotation axis. In this wo…
Searching for magnetic fields in featureless white dwarfs with the DIPOL-UF polarimeter at the Nordic Optical Telescope
A. Berdyugin, J. D. Landstreet, S. Bagnulo +2
About 20% of the white dwarfs possess a magnetic field that may be detected by the splitting and/or polarization of their spectral lines. As they cool, the effective temperatures o…
Atmospheric heating and magnetism driven by Ne distillation in isolated white dwarfs
A. F. Lanza, N. Z. Rui, J. Farihi +2
The origin of atmospheric heating in the cool, magnetic white dwarf GD 356 remains unsolved nearly 40 years after its discovery. This once idiosyncratic star with $T_{\rm eff}\appr…
A massive helium star with a sufficiently strong magnetic field to form a magnetar
T. Shenar, G. A. Wade, P. Marchant +13
Magnetars are highly magnetized neutron stars; their formation mechanism is unknown. Hot helium-rich stars with spectra dominated by emission lines are known as Wolf-Rayet stars. W…
Optical spectropolarimetry of large C-complex asteroids: polarimetric evidence for heterogeneous surface compositions
Yuna G. Kwon, Stefano Bagnulo, Alberto Cellino
This study presents the first optical spectropolarimetric study of large C-complex asteroids. A total of 64 C-complex asteroids of different subclasses are analyzed using archival…
Not so fast, not so furious: just magnetic
Landstreet, J. D., Villaver +3
WD0810-353 is a white dwarf within the 20pc volume around the Sun. Using Gaia astrometric distance and proper motions, and a radial velocity derived from Gaia spectroscopy, it has…