512 citations · 1.9k across the 37 of their papers we have counts for
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Debye cooling of ultramassive white dwarfs
David Barba-González, Sivan Ginzburg
Recent observations of cold and massive white dwarfs are beginning to probe Debye cooling: an accelerated cooling phase driven by the vanishing heat capacity of the crysta…
Sinking and spreading of metal pollution in magnetic white dwarfs
Elad Shiftan, Sivan Ginzburg
Observations of magnetic polluted white dwarfs indicate that most of them have higher concentrations of metals near the poles compared to lower latitudes. Maintaining such abundanc…
Eccentricities of millisecond pulsars with intermediate-mass progenitors
Hagai Bareli, Sivan Ginzburg
One channel to form millisecond pulsars with CO white dwarf companions is through the stable Roche-lobe overflow of intermediate-mass ($3\,{\rm M}_\odot\lesssim M\lesssim 5\,{\rm M…
Double-faced white dwarfs and the magnetic inhibition of convection
Sivan Ginzburg
About one in five white dwarfs undergoes spectral evolution from a helium atmosphere to hydrogen and then back to helium. These short-lived hydrogen envelopes - the result of resid…
Seismology and diffusion of ultramassive white dwarf magnetic fields
Daniel Blatman, Nicholas Z. Rui, Sivan Ginzburg +1
Ultramassive white dwarfs (UMWDs; defined by masses ) are prime targets for seismology, because they pass through the ZZ Ceti instability strip at the s…
Magnetic dynamos powered by white dwarf superficial convection
Rom Yaakovyan, Sivan Ginzburg, Jim Fuller +1
When the effective temperature of a cooling white dwarf drops below the ionization limit, it develops a surface convection zone that may generate a magnetic field …
Younger age for the oldest magnetic white dwarfs
Sivan Ginzburg
Sufficiently old white dwarfs cool down through a convective envelope that directly couples their degenerate cores to the surface. Magnetic fields may inhibit this convection by st…
Magnetic field breakout in ultramassive crystallizing white dwarfs
Daniel Blatman, Sivan Ginzburg
Ultramassive white dwarfs with masses probe extreme physics near the Chandrasekhar limit. Despite the rapid increase in observations, it is still uncl…
White dwarf eccentricity fluctuation and dissipation by AGB convection
Yair Cohen, Sivan Ginzburg, Maya Levy +2
Millisecond pulsars with white dwarf companions have typical eccentricities . The eccentricities of helium white dwarfs are explained well by applying the fl…
Magnetic braking below the cataclysmic variable period gap and the observed dearth of period bouncers
Arnab Sarkar, Antonio C. Rodriguez, Sivan Ginzburg +2
Period bouncers are cataclysmic variables (CVs) that have evolved past their orbital period minimum. The strong disagreement between theory and observations of the relative fractio…
Magnetic field breakout from white dwarf crystallization dynamos
Daniel Blatman, Sivan Ginzburg
A convective dynamo operating during the crystallization of white dwarfs is one of the promising channels to produce their observed strong magnetic fields. Although the magnitude o…
Convective dynamos of black widow companions
Jordan Conrad-Burton, Alon Shabi, Sivan Ginzburg
Black widows and redbacks are binary millisecond pulsars with close low-mass companions that are irradiated and gradually ablated by the pulsar's high-energy luminosity $L_{\rm irr…
AU Microscopii in the FUV: Observations in Quiescence, During Flares, and Implications for AU Mic b and c
Adina D. Feinstein, Kevin France, Allison Youngblood +13
High energy X-ray and ultraviolet (UV) radiation from young stars impacts planetary atmospheric chemistry and mass loss. The active Myr M dwarf AU Mic hosts two exoplanet…
Slow convection and fast rotation in crystallization-driven white dwarf dynamos
Sivan Ginzburg, Jim Fuller, Adela Kawka +1
It has been recently suggested that white dwarfs generate magnetic fields in a process analogous to the Earth. The crystallization of the core creates a compositional inversion tha…
Eccentric millisecond pulsars by resonant convection
Sivan Ginzburg, Eugene Chiang
Eccentric millisecond pulsars (eMSPs) with white dwarf companions exhibit orbital eccentricities orders of magnitude larger than predicted by turbulent convection in the white dwar…
Novae heat their food: mass transfer by irradiation
Sivan Ginzburg, Eliot Quataert
A nova eruption irradiates and heats the donor star in a cataclysmic variable to high temperatures , causing its outer layers to expand and overflow the Roche lobe. We…
Superluminous Light Curves from Supernovae Exploding in a Dense Wind
Sivan Ginzburg, Shmuel Balberg
Observations from the last decade have indicated the existence of a general class of superluminous supernovae (SLSNe), in which the peak luminosity exceeds 10^{44} erg/s. Here we f…