1.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of TurkuFI349 papers
- Centre National de la Recherche ScientifiqueFR112 papers
- Aalto UniversityFI109 papers
- University of PaduaIT102 papers
- Instituto de Astrofísica de AndalucíaES94 papers
- California Institute of TechnologyUS92 papers
- Instituto de Astrofísica de CanariasES84 papers
- Center for Astrophysics Harvard & SmithsonianUS78 papers
- Hiroshima UniversityJP75 papers
- National Institute for AstrophysicsIT74 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT72 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di TorinoIT71 papers
7 papers · 2 filters
Limiting the accretion disk light in two mass transferring hot subdwarf binaries
Kunal Deshmukh, Thomas Kupfer, Pasi Hakala +6
We report the results from follow-up observations of two Roche-lobe filling hot subdwarf binaries with white dwarf companions predicted to have accretion disks. ZTF J213056.71+4420…
Two decades of optical timing of the shortest-period binary star system HM Cancri
James Munday, T. R. Marsh, Mark Hollands +15
The shortest-period binary star system known to date, RX J0806.3+1527 (HM Cancri), has now been observed in the optical for more than two decades. Although it is thought to be a do…
Short Duration Accretion States of Polars as seen in TESS and ZTF data
C. Duffy, G. Ramsay, Kinwah Wu +4
Polars are highly magnetic cataclysmic variables which have been long observed to have both high and low brightness states. The duration of these states has been previously seen to…
A TESS search for donor-star pulsations in High-Mass X-ray Binaries
Gavin Ramsay, Pasi Hakala, Philip A. Charles
Ground-based optical photometry of the counterparts of High-Mass X-ray Binaries (HMXBs) has revealed the presence of periodic modulations on timescales of ~0.3-0.5 d. More recent s…
V889 Her: abrupt changes in the magnetic field or differential rotation?
Teemu Willamo, Thomas Hackman, Jyri J. Lehtinen +2
We have applied Zeeman-Doppler imaging (ZDI) to an extensive spectropolarimetric HARPSpol data set of the magnetically active young solar analogue V889 Her, covering 35 spectra obt…
The Puzzling Story of Flare Inactive Ultra Fast Rotating M dwarfs. I. Exploring their Magnetic Fields
Lauren Doyle, Stefano Bagnulo, Gavin Ramsay +2
Stars which are rapidly rotating are expected to show high levels of activity according to the activity-rotation relation. However, previous TESS studies have found Ultra Fast Rota…
The Puzzling Story of Flare Inactive Ultra Fast Rotating M dwarfs. II. Searching for radial velocity variations
Gavin Ramsay, Pasi Hakala, J. Gerry Doyle +2
Observations made using TESS revealed a sample of low mass stars which show a periodic modulation on a period ~d. Surprisingly many of these Ultra Fast Rotating (UFR) stars s…