16 citations · 50 across the 7 of their papers we have counts for
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Long-lasting activity of asteroid (248370) 2005 QN 173
Oleksandra Ivanova, Javier Licandro, Fernando Moreno +8
We present the results of observations of asteroid (248370) QN obtained during July 2021 - January 2022 with three telescopes. Our analysis revealed the presence of the dus…
On the dust of tailless Oort-cloud comet C/2020 T2 (Palomar)
Yuna Grace Kwon, Joseph R. Masiero, Johannes Markkanen
We report our new analysis of Oort-cloud comet C/2020 T2 (Palomar) (T2) observed at 2.06 au from the Sun (phase angle of 28.5 deg) about two weeks before perihelion. T2 lacks a sig…
Do twin spectral peaks of olivine particles in the thermal infrared diagnose their sizes and porosities?
Hiroshi Kimura, Johannes Markkanen, Ludmilla Kolokolova +4
A well-established constraint on the size of non-porous olivine grains or the porosity of aggregates consisting of small olivine grains from prominent narrow peaks in thermal infra…
VLT spectropolarimetry of comet 67P: Dust environment around the end of its intense Southern summer
Yuna Kwon, Stefano Bagnulo, Johannes Markkanen +5
We report our new spectropolarimetric observations for 67P dust over 4,000--9,000 Angstrom using the ESO/Very Large Telescope in January--March 2016 (phase angle ranging 26--…
An Update of the Correlation between Polarimetric and Thermal Properties of Cometary Dust
Yuna G. Kwon, Ludmilla Kolokolova, Jessica Agarwal +1
We present a possible correlation between the properties of scattered and thermal radiation from dust and the principal dust characteristics responsible for this relationship. To t…
Thermophysical model for icy cometary dust particles
Johannes Markkanen, Jessica Agarwal
Context. Cometary dust particles are subjected to various forces after being lifted off the nucleus. These forces define the dynamics of dust, trajectories, alignment, and fragment…