231 citations · 2.5k across the 48 of their papers we have counts for
48 papers
Diurnal ejection of boulder clusters on comet 67P lasting beyond 3 AU
Xian Shi, Xuanyu Hu, Jessica Agarwal +6
Ejection of large boulder-like debris is a vigorous form of cometary activity that is unlikely induced by water ice out-gassing alone but rather associated with the sublimation of…
Simulation and experiment of gas diffusion in a granular bed
Carsten Güttler, Martin Rose, Holger Sierks +6
The diffusion of gas through porous material is important to understand the physical processes underlying cometary activity. We study the diffusion of a rarefied gas (Knudsen regim…
CO2-driven surface changes in the Hapi region on Comet 67P/Churyumov-Gerasimenko
Björn J. R. Davidsson, F. Peter Schloerb, Sonia Fornasier +24
Between 2014 December 31 and 2015 March 17, the OSIRIS cameras on Rosetta documented the growth of a 140m wide and 0.5m deep depression in the Hapi region on Comet 67P/Churyumov-Ge…
Cometary dust analogues for physics experiments
A. Lethuillier, C. Feller, E. Kaufmann +23
The CoPhyLab (Cometary Physics Laboratory) project is designed to study the physics of comets through a series of earth-based experiments. For these experiments, a dust analogue wa…
Small lobe of comet 67P: Characterization of the Wosret region with ROSETTA-OSIRIS
Sonia Fornasier, Jules Bourdelle de Micas, Pedro H. Hasselmann +3
We investigated Wosret, a region located on the small lobe of the 67P/Churyumov-Gerasimenko comet subject to strong heating during the perihelion passage. This region includes Abyd…
Observational constraints to the dynamics of dust particles in the coma of comet 67P/Churyumov-Gerasimenko
Elisa Frattin, I. Bertini, S. L. Ivanovski +18
In this work we aim to characterise the dust motion in the inner coma of comet 67P/Churyumov- Gerasimenko to provide constraints for theoretical 3D coma models. The OSIRIS camera o…
The Electron Proton Helium INstrument as an Example for a Space Weather Radiation Instrument
Patrick Kühl, Bernd Heber, Raúl Gómez-Herrero +3
The near-Earth energetic particle environment has been monitored since the 1970's. With the increasing importance of quantifying the radiation risk for, e.g. for the human explorat…
Spectrophotometric characterization of the Philae landing site and surroundings with the ROSETTA/OSIRIS cameras
Hong Van Hoang, S. Fornasier, E. Quirico +5
We investigate Abydos, the final landing site of the Philae lander after its eventful landing from the Rosetta spacecraft on comet 67P/Churyumov-Gerasimenko on 12 November 2014. Ov…
GAUSS -- A Sample Return Mission to Ceres
Xian Shi, Julie Castillo-Rogez, Henry Hsieh +26
The goal of Project GAUSS is to return samples from the dwarf planet Ceres. Ceres is the most accessible ocean world candidate and the largest reservoir of water in the inner solar…
Diurnal variation of dust and gas production in comet 67P/Churyumov-Gerasimenko at the inbound equinox as seen by OSIRIS and VIRTIS-M on board Rosetta
C. Tubiana, G. Rinaldi, C. Güttler +53
On 27 Apr 2015, when 67P/C-G was at 1.76 au from the Sun and moving towards perihelion, the OSIRIS and VIRTIS-M instruments on Rosetta observed the evolving dust and gas coma durin…
Surface evolution of the Anhur region on comet 67P from high-resolution OSIRIS images
S. Fornasier, C. Feller, P. H. Hasselmann +34
The southern hemisphere of comet 67P/Churyumov-Gerasimenko (67P) became observable by the Rosetta mission in March 2015, a few months before cometary southern vernal equinox. The A…
Synthesis of the Morphological Description of Cometary Dust at Comet 67P
C. Güttler, T. Mannel, A. Rotundi +28
Before Rosetta, the space missions Giotto and Stardust shaped our view on cometary dust, supported by plentiful data from Earth based observations and interplanetary dust particles…
ROSETTA/OSIRIS observations of the 67P nucleus during the April 2016 flyby: high-resolution spectrophotometry
C. Feller, S. Fornasier, S. Ferrari +35
In April 2016, the Rosetta spacecraft performed a low-altitude low-phase-angle flyby over the Imhotep-Khepry transition of 67P/Churyumov-Gerasimenko's nucleus. The OSIRIS/Narrow-An…
Models of Rosetta/OSIRIS 67P dust coma phase function
Fernando Moreno, Daniel Guirado, Olga Muñoz +39
The phase function of the dust coma of comet 67P has been determined from Rosetta/OSIRIS images \citep{Bertini17}. This function show a deep minimum at phase angles near 100$^\circ…
Linking surface morphology, composition, and activity on the nucleus of 67P/Churyumov-Gerasimenko
S. Fornasier, V. H. Hoang, P. H. Hasselmann +37
The Rosetta space probe accompanied comet 67P/Churyumov-Gerasimenko for more than two years, obtaining an unprecedented amount of unique data of the comet nucleus and inner coma. T…
Tensile Strength of 67P/Churyumov-Gerasimenko Nucleus Material from Overhangs
N. Attree, O. Groussin, L. Jorda +52
We directly measure twenty overhanging cliffs on the surface of comet 67P/Churyumov-Gerasimenko extracted from the latest shape model and estimate the minimum tensile strengths nee…
Evidence of sub-surface energy storage in comet 67P from the outburst of 2016 July 3
J. Agarwal, V. Della Corte, P. D. Feldman +67
On 3 July 2016, several instruments on board ESA's Rosetta spacecraft detected signs of an outburst event on comet 67P, at a heliocentric distance of 3.32 AU from the sun, outbound…
Asteroid (21) Lutetia: Disk-resolved Photometric Analysis of Baetica Region
P. H. Hasselmann, M. A. Barucci, S. Fornasier +4
(21) Lutetia has been visited by Rosetta mission on July 2010 and observed with a phase angle ranging from 0.15 to 156.8 degrees. The Baetica region, located at the north pole has…
Constraints on cometary surface evolution derived from a statistical analysis of 67P's topography
J. -B. Vincent, S. F. Hviid, S. Mottola +51
We present a statistical analysis of the distribution of large scale topographic features on comet 67P/Churyumov-Gerasimenko. We observe that the cumulative cliff height distributi…
Seasonal Mass Transfer on the Nucleus of Comet 67P/Chuyumov-Gerasimenko
H. U. Keller, S. Mottola, S. F. Hviid +47
We collect observational evidence that supports the scheme of mass transfer on the nucleus of comet 67P/Churyumov-Gerasimenko. The obliquity of the rotation axis of 67P causes stro…
The highly active Anhur-Bes regions in the 67P/Churyumov - Gerasimenko comet: results from OSIRIS/ROSETTA observations
S. Fornasier, C. Feller, J. C. Lee +51
The Southern hemisphere of the 67P/Churyumov-Gerasimenko comet has become visible from Rosetta only since March 2015. It was illuminated during the perihelion passage and therefore…
Modeling of the outburst on July 29th, 2015 observed with OSIRIS cameras in the southern hemisphere of comet 67P/Churyumov-Gerasimenko
A. Gicquel, M. Rose, J. -B. Vincent +60
Images of the nucleus and the coma (gas and dust) of comet 67P/Churyumov- Gerasimenko have been acquired by the OSIRIS (Optical, Spectroscopic, and Infrared Remote Imaging System)…
Distance determination method of dust particles using Rosetta OSIRIS NAC and WAC data
E. Drolshagen, T. Ott, D. Koschny +42
The ESA Rosetta spacecraft has been tracking its target, the Jupiter-family comet 67P/Churyumov-Gerasimenko, in close vicinity for over two years. It hosts the OSIRIS instruments:…
Evidence for Surface Variegation in Rosetta OSIRIS Images of Asteroid 2867 Steins
S. E. Schröder, H. U. Keller, P. Gutierrez +4
The OSIRIS camera onboard Rosetta successfully acquired images of asteroid 2867 Steins through a variety of color filters during the flyby on 5 September 2008. The best images of t…