14 papers
Long-period radio transient PSR J0901-4046 is not an Isolated White Dwarf Pulsar
Maxim Lyutikov, Mukremin Kilic, Alexander Wolszczan +1
We report the {\it Chandra} non-detection of PSR J09014046, a seconds long-period radio transient (LPT). For a distance of 467 pc, the upper limit on X-ray luminosity…
The MIRI Excesses around Degenerates (MEAD) Survey I: A candidate cold brown dwarf in orbit around the nearby white dwarf 2MASS J09424023-4637176
Loïc Albert, Sabrina R. Poulsen, Ãrika Le Bourdais +17
The MIRI Excesses Around Degenerates Survey is a Cycle 2 James Webb Space Telescope (JWST) Survey program designed to image nearby white dwarfs in the mid-IR with the MIRI imaging…
Activity in White Dwarf Debris Disks I: Spitzer Legacy Reveals Variability Incompatible with the Canonical Model
Hiba Tu Noor, Jay Farihi, Scott J. Kenyon +11
This study presents all available, multi-epoch 3.6 and 4.5 m photometry from Spitzer Space Telescope observations of white dwarf debris disks, including weekly cadence observat…
The Fraction of Distilled White Dwarfs with Long-Lived Habitable Zones
Manuel Barrientos, Mukremin Kilic, Simon Blouin +3
After carbon and oxygen, Ne is the most abundant element in white dwarf interiors. As C/O white dwarfs (WDs) crystallize, they are predicted to go through a distillation pro…
Precise Parameters for Two LISA Sources
Manuel Barrientos, Mukremin Kilic, Warren R. Brown +5
We present precise parameters for two compact double white dwarf binaries, SDSS J232230.20+050942.0 (J2322+0509) and SDSS J063449.92+380352.2 (J0634+3803), with orbital periods of…
Interstellar comet 3I/ATLAS: discovery and physical description
Bryce T. Bolin, Matthew Belyakov, Christoffer Fremling +18
We describe the physical characteristics of interstellar comet 3I/ATLAS, discovered on 2025 July 1 by the Asteroid Terrestrial-impact Last Alert System. The comet has eccentricity,…