554 citations · 928 across the 6 of their papers we have counts for
6 papers
Grain charging in protoplanetary discs
Martin Ilgner
Recent work identified a growth barrier for dust coagulation that originates in the electric repulsion between colliding particles. Depending on its charge state, dust material may…
Turbulent transport and its effect on the dead zone in protoplanetary discs
Martin Ilgner, Richard P. Nelson
Protostellar accretion discs have cool, dense midplanes where externally originating ionisation sources such as X-rays or cosmic rays are unable to penetrate. This suggests that fo…
On the ionisation fraction in protoplanetary disks III. The effect of X-ray flares on gas-phase chemistry
Martin Ilgner, Richard P. Nelson
Context. Recent observations of the X-ray emission from T Tauri stars in the Orion nebula have shown that they undergo frequent outbursts in their X-ray luminosity. These X-ray fla…
On the Ionisation Fraction in Protoplanetary Disks II: The Effect of Turbulent Mixing on Gas--phase Chemistry
Martin Ilgner, Richard P. Nelson
We calculate the ionisation fraction in protostellar disk models using two different gas-phase chemical networks, and examine the effect of turbulent mixing by modelling the diffus…
On the Ionisation Fraction in Protoplanetary Disks I: Comparing Different Reaction Networks
Martin Ilgner, Richard P. Nelson
We calculate the ionisation fraction in protostellar disk models using a number of different chemical reaction networks, including gas-phase and gas-grain reaction schemes. The dis…
Rosseland and Planck Mean Opacities for Protoplanetary Discs
D. Semenov, Th. Henning, Ch. Helling +2
In this paper, we present mean gas and dust opacities relevant to the physical conditions typical of protoplanetary discs. As the principal absorber for temperatures below ~1,500 K…