Sijme-Jan Paardekooper

TL;DR: Observations reveal the presence of a small planet with a minimum mass of about 1.3 Earth masses orbiting Proxima with a period of approximately 11.2 days at a semi-major-axis distance of around 0.05 astronomical units.

TL;DR: In this paper, the effects of diffusion on the non-linear corotation torque, or horseshoe drag, in the two-dimensional limit, focusing on low-mass planets for which the width of the horshoe region is much smaller than the scaleheight of the disc.

TL;DR: In this article, the authors study the torque on low-mass planets embedded in protoplanetary discs in the two-dimensional approximation, incorporating non-isothermal eects, and couple linear estimates of the Lindblad torque to a simple, but non-linear, model of adiabatic corotation torques (or horseshoe drag), resulting in a simple formula that governs Type I migration in nonisothermal discs.

TL;DR: In this article, numerical simulations of a disc-planet system using various grid-based and smoothed particle hydrodynamics (SPH) codes are performed for a simple setup where Jupiter and Neptune mass planets on a circular orbit open a gap in a protoplanetary disc during a few hundred orbital periods.

TL;DR: In this article, numerical simulations of a disc-planet system using various grid-based and smoothed particle hydrodynamics (SPH) codes are performed for a simple setup where Jupiter and Neptune mass planets on a circular orbit open a gap in a protoplanetary disc during a few hundred orbital periods.