2024/12/20 by Erik B. Monson, Monson, Erik B., George G. Pavlov +3
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #FOS: Physical sciences #Gamma-ray bursts and supernovae #High Energy Astrophysical Phenomena (astro-ph.HE) #Solar and Stellar Astrophysics (astro-ph.SR)
paper · pdf · doi:10.48550/arxiv.2501.03242
openalex publication_date 2024/12/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Using a recent Chandra ACIS observation of the eclipsing cataclysmic variable (CV) V1460 Her (2MASS J16211735+4412541) with a fast-rotating (P\rm spin = 38.9~s) white dwarf, we estimated a flux F_0.5-7 \rm keV\rm abs = (1.9± 0.5)× 10-14 erg cm-2 s-1, a factor of ∼7 lower than found from previous Swift XRT observations ≈8 years ago, when the CV was quiescent. The drop in the flux suggests a corresponding drop in the accretion rate, and the resulting intrinsic luminosity L_0.5-7 \rm keV ∼ 1.6× 1029 erg s-1 places V1460 Her among the lowest-luminosity magnetic CVs known, in a state of very low accretion.