178 citations
- California Institute of TechnologyUS4 papers
- Fermi National Accelerator LaboratoryUS4 papers
- University of MichiganUS4 papers
- Astrobiology CenterJP3 papers
- Astronomy and SpaceAU3 papers
- Center for Astrophysics Harvard & SmithsonianUS3 papers
- Institute for Fundamental Physics of the UniverseIT3 papers
- Institute of AstronomyRU3 papers
- Kavli Institute for Particle Astrophysics and CosmologyUS3 papers
- Netherlands Institute for Radio AstronomyNL3 papers
- Space Telescope Science InstituteUS3 papers
- Technion – Israel Institute of TechnologyIL3 papers
15 papers · 1 filter
White dwarf + M dwarf Detached Binaries in Long Period Radio Transients: Observed Binary Parameters, Evolution, and Population Constraints
Antonio C. Rodriguez, Kareem El-Badry, Iris de Ruiter +4
Long period radio transients (LPTs) are the slowest radio-pulsing sources ever found, with the current population spanning periods of seven minutes to over six hours. Two of the th…
The neighboring stars of N6946-BH1 and the observational characteristics of failed supernovae
R. Forés-Toribio, C. S. Kochanek
Stellar collapse models predict that some stars more massive than 15 may collapse directly to a black hole, sometimes with a weak optical transient, a phenomenon kno…
Closed-Form Statistical Relations Between Projected Separation, Semimajor Axis, Companion Mass, and Host Acceleration
Timothy D Brandt
I derive the statistical relationship between a radial velocity or astrometric acceleration (a trend), a companion's mass, and the projected separation of the companion. These rela…
Vision-Based CNN Prediction of Sunspot Numbers from SDO/HMI Images
Fabian C. Quintero-Pareja, Diederik A. Montano-Burbano, Santiago Quintero-Pareja +1
Sunspot numbers provide the longest continuous record of solar activity and remain a key index for heliophysical research and space-weather applications. Standard sunspot determina…
Complex spectral variability and hints of a luminous companion in the Be star + black hole binary candidate ALS 8814
Kareem El-Badry, Matthias Fabry, Hugues Sana +2
The emission-line binary ALS 8814 was recently proposed as a Be star + black hole (BH) binary based on large-amplitude radial velocity (RV) variations of a Be star and non-detectio…
ASASSN-24fw: An 8-month long, 4.1 mag, optically achromatic and polarized dimming event
R. Forés-Toribio, B. JoHantgen, C. S. Kochanek +20
We discuss ASASSN-24fw, a 13th-magnitude star that optically faded by mag starting in September 2024 after over a decade of quiescence in ASAS-SN. The dimmimg…