18 citations · 67 across the 7 of their papers we have counts for
7 papers
The growth of super-large pre-planetary pebbles to an impact erosion limit
J. Teiser, J. Penner, K. Joeris +4
Early dust evolution in protoplanetary disks is dominated by sticking collisions. However, this initial phase of particle growth faces constraints - notably from destructive encoun…
Ejected Particles after Impact Splash on Mars: Electrification
T. Becker, F. C. Onyeagusi, J. Teiser +7
Within the RoadMap project we investigated the microphysical aspects of particle collisions during saltation on the Martian surface in laboratory experiments. Following the size di…
The Dissolution of Planetesimals in Electrostatic Fields
F. Chioma Onyeagusi, Jens Teiser, Tim Becker +1
Planetesimals or smaller bodies in protoplanetary disks are often considered to form as pebble piles in current planet formation models. They are supposed to be large but loose, we…
Forbidden planetesimals
Laurent Schönau, Jens Teiser, Tunahan Demirci +5
Planetesimals are born fragile and are subject to destruction by wind erosion as they move through the gas of a protoplanetary disk. In microgravity experiments, we determined the…
Electrostatic Repulsion of Dust from Planetary Surfaces
F. Chioma Onyeagusi, Felix Jungmann, Jens Teiser +1
Surfaces of planetary bodies can have strong electric fields, subjecting conductive grains to repulsive electrostatic forces. This has been proposed as mechanism to eject grains fr…
Measuring Electric Dipole Moments of Trapped Sub-mm Particles
F. Chioma Onyeagusi, Jens Teiser, Niclas Schneider +1
We present a method for measurements of electric dipole moments on (sub)-mm size (basalt) particles levitated in an acoustic trap and centered within a plate capacitor. If an elect…
Lifting Grains by the Transient Low Pressure in a Martian Dust Devil
Tetyana Bila, Gerhard Wurm, Florence Chioma Onyeagusi +1
Lifting dust and sand into the thin Martian atmosphere is a challenging problem. Atmospheric pressure excursions within dust devils have been proposed to support lifting. We verify…