Two long period radio transients are detached white dwarf-M dwarf binaries with matching periods, massive cool crystallized white dwarfs, low inclinations, and an estimated population of 100-2000 such systems within 2 kpc.
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New SED fitting of ASKAP J1745-5051 using model atmospheres, corrected photometry, and added NIR data yields a 15,000 K WD plus 0.05 solar-mass sub-stellar donor at ~320 pc, suggesting a period-bouncer CV.
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White dwarf + M dwarf Detached Binaries in Long Period Radio Transients: Observed Binary Parameters, Evolution, and Population Constraints
Two long period radio transients are detached white dwarf-M dwarf binaries with matching periods, massive cool crystallized white dwarfs, low inclinations, and an estimated population of 100-2000 such systems within 2 kpc.
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The Long-Period Radio Transient and Cataclysmic Variable ASKAP J1745-5051: Evidence for a 15,000 K White Dwarf and a Sub-Stellar Donor
New SED fitting of ASKAP J1745-5051 using model atmospheres, corrected photometry, and added NIR data yields a 15,000 K WD plus 0.05 solar-mass sub-stellar donor at ~320 pc, suggesting a period-bouncer CV.
- A Falsifiable Timing Test for the Double-White-Dwarf Model of Long-Period Transients