5 papers
Column-Density Estimation from the Equivalent Widths of Absorption Doublets
Avshalom Badash, Doron Kushnir
Na I D absorption is widely used to estimate the dust extinction toward Galactic and extragalactic sources, but the inferred column densities are unreliable once the lines saturate…
The Distance to NGC 4258 from Individual Maser Component Tracking
Daniella van der Boom, Doron Kushnir
We present a reanalysis of the water maser system in NGC 4258 to reassess its geometric distance, commonly reported as approximately 7.6 Mpc with percent-level accuracy, a key anch…
All known Type Ia supernovae models fail to reproduce the observed bolometric luminosity-width correlation
Amir Sharon, Doron Kushnir, Nahliel Wygoda
Type Ia supernovae (SNe Ia) are widely believed to arise from thermonuclear explosions of white dwarfs (WDs). However, ongoing debate surrounds their progenitor systems and the mec…
Strong NIR emission following the long duration GRB 211211A: Dust heating as an alternative to a kilonova
Eli Waxman, Eran O. Ofek, Doron Kushnir
The prolonged near infrared (NIR) emission observed following the long duration GRB 211211A is inconsistent with afterglow emission from the shock driven into the circum-stellar me…
Off-centre ignition of sub-Chandrasekhar white dwarfs does not resolve the tension with the observed - relation of type Ia supernovae
Eden Schinasi-Lemberg, Doron Kushnir
Type Ia supernovae (SNe Ia) are likely the thermonuclear explosions of carbon-oxygen (CO) white-dwarf (WD) stars, but the exact nature of their progenitor systems remains uncertain…