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OGLE-BLAP-009 -- A Case Study for the Properties and Evolution of Blue Large-Amplitude Pulsators
Corey W. Bradshaw, Matti Dorsch, Thomas Kupfer +5
Blue large-amplitude pulsators (BLAPs) make up a rare class of hot pulsating stars with effective temperatures of 30,000 K and surface gravities of 4.0 - 5.0 dex (cgs). Th…
A Pilot Search for Gravitational Self-Lensing Binaries with the Zwicky Transient Facility
Allison Crossland, Eric C. Bellm, Courtney Klein +5
Binary systems containing a compact object may exhibit periodic brightening episodes due to gravitational lensing as the compact object transits the companion star. Such ``self-len…
Electromagnetic characterization of the LISA verification binary ZTF J05265934
Alekzander Kosakowski, Thomas Kupfer, P. Bergeron +1
We present an analysis of new and archival data to the 20.506-minute LISA verification binary J052610.42593445.32 (J05265934). Our joint spectroscopic and photometric analysi…
LISA Galactic binaries with astrometry from Gaia DR3
Thomas Kupfer, Valeriya Korol, Tyson B. Littenberg +11
Galactic compact binaries with orbital periods shorter than a few hours emit detectable gravitational waves at low frequencies. Their gravitational wave signals can be detected wit…
Strongly magnetized accretion in two ultracompact binary systems
Thomas J. Maccarone, Thomas Kupfer, Edgar Najera Casarrubias +5
We present the discoveries of two of AM CVn systems, Gaia14aae and SDSS~J080449.49+161624.8, which show X-ray pulsations at their orbital periods, indicative of magnetically collim…