591 citations · 1.8k across the 13 of their papers we have counts for
14 papers
The footprint of cometary dust analogs: I. Laboratory experiments of low-velocity impacts and comparison with Rosetta data
L. E. Ellerbroek, B. Gundlach, A. Landeck +8
Cometary dust provides a unique window on dust growth mechanisms during the onset of planet formation. Measurements by the Rosetta spacecraft show that the dust in the coma of come…
Comet formation in collapsing pebble clouds. What cometary bulk density implies for the cloud mass and dust-to-ice ratio
S. Lorek, B. Gundlach, P. Lacerda +1
Comets are remnants of the icy planetesimals that formed beyond the ice line in the Solar Nebula. Growing from micrometre-sized dust and ice particles to km-sized objects is, howev…
Collisions of small ice particles under microgravity conditions (II): Does the chemical composition of the ice change the collisional properties?
C. R. Hill, D. Heißelmann, J. Blum +1
Context: Understanding the collisional properties of ice is important for understanding both the early stages of planet formation and the evolution of planetary ring systems. Simpl…
Collisions of small ice particles under microgravity conditions
C. R. Hill, D. Heißelmann, J. Blum +1
Planetisimals are thought to be formed from the solid material of a protoplanetary disk by a process of dust aggregation. It is not known how growth proceeds to kilometre sizes, bu…
The multifaceted planetesimal formation process
Anders Johansen, Jürgen Blum, Hidekazu Tanaka +3
Accumulation of dust and ice particles into planetesimals is an important step in the planet formation process. Planetesimals are the seeds of both terrestrial planets and the soli…
Normal Collisions of Spheres: A Literature Survey on Available Experiments
Carsten Güttler, Daniel Heißelmann, Jürgen Blum +1
The central collision between two solid spheres or the normal collision between a sphere and a plate are important to understand in detail before studying more complex particle int…
Outgassing of icy bodies in the Solar System - II. Heat transport in dry, porous surface dust layers
Bastian Gundlach, Jürgen Blum
In this work, we present a new model for the heat conductivity of porous dust layers in vacuum, based on an existing solution of the heat transfer equation of single spheres in con…
Experimental investigation of the nebular formation of chondrule rims and the formation of chondrite parent bodies
Eike Beitz, Jürgen Blum, Romain Mathieu +2
We developed an experimental setup to test the hypothesis that accretionary dust rims around chondrules formed in the solar nebula at elevated temperatures. Our experimental method…
The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? III. Sedimentation driven coagulation inside the snow-line
A. Zsom, C. W. Ormel, C. P. Dullemond +1
We investigate dust growth due to settling in a 1D vertical column of a protoplanetary disk. It is known from the observed 10 micron feature in disk SEDs, that small micron-sized g…
Thermal conductivity measurements of porous dust aggregates: I. Technique, model and first results
Maya Krause, Jürgen Blum, Yuri V. Skorov +1
We present a non-invasive technique for measuring the thermal conductivity of fragile and sensitive materials. In the context of planet formation research, the investigation of the…
Dust growth in protoplanetary disks - a comprehensive experimental/theoretical approach
Jürgen Blum
More than a decade of dedicated experimental work on the collisional physics of protoplanetary dust has brought us to a point at which the growth of dust aggregates can - for the f…
The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? II. Introducing the bouncing barrier
A. Zsom, C. W. Ormel, C. Guettler +2
The sticking of micron sized dust particles due to surface forces in circumstellar disks is the first stage in the production of asteroids and planets. The key ingredients that dri…
The outcome of protoplanetary dust growth: pebbles, boulders, or planetesimals? I. Mapping the zoo of laboratory collision experiments
Carsten Güttler, Jürgen Blum, Andras Zsom +2
The growth processes from protoplanetary dust to planetesimals are not fully understood. Laboratory experiments and theoretical models have shown that collisions among the dust agg…
A Zero-Gravity Instrument to Study Low Velocity Collisions of Fragile Particles at Low Temperatures
D. M. Salter, D. Heißelmann, G. Chaparro +14
We discuss the design, operation, and performance of a vacuum setup constructed for use in zero (or reduced) gravity conditions to initiate collisions of fragile millimeter-sized p…