Results 121 to 130 of about 239 (145)

Finite Lifetime Fragment Model 3 for striae formation in the dust tails of comets (FLM 3)

Icarus, 2021
Abstract The striations in the Type II tail of the comets are called striae. The origin of the striae has been poorly understood. We present a new dynamical model to explain the structure of the striae observed at comets Hale-Bopp (C/1995O1), West (C/1975V1), and Seki-Lines (C/1962C1).
openaire   +1 more source

Modeling of the dust tail of comet C/2012 S1 (ISON) from the results of observations

Solar System Research, 2015
The results of the dynamic modeling of the process, that formed the dust tail of comet C/2012 S1 (ISON), are presented. The images of the comet were acquired with the 1-meter Zeiss-1000 telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS). To construct the model of the dust tail, the trajectories of 50 million
S. V. Kharchuk, O. V. Ivanova, P. P. Korsun, N. N. Kiselev, A. S. Moskvitin   +4 more
openaire   +1 more source

Dust tail observation and modeling of the interstellar comet 2I/Borisov

On 30 August 2019 the amateur Borisov discovered a new comet; after few days it was clear from the characteristics of its orbit (eccentricity > 3 and high hyperbolic excess velocity) that the second interstellar object had been detected and the object received the name of 2I/Borisov.
Gabriele Cremonese, Marco Fulle, Pamela Cambianica, Giovanni Munaretto, Maria Teresa Capria, Fiorangela La Forgia, Monica Lazzarin, Alessandra Migliorini, Walter Boschin   +8 more
openaire   +2 more sources

Distribution Law For Particle Fragmentation Times In A Theory For Striated Tails Of Dust Comets: Application To Comet Hale-Bopp (C/1995 O1)

Earth, Moon, and Planets, 1997
Sekanina and Farrell's model for the striated dust tails of comets describes the formation of striae as a two-step fragmentation process that is characterized by an ejection time te of parent particles, by their radiation pressure acceleration βp, and by their fragmentation time tf.
Z. Sekenina, J. Pittichová
openaire   +1 more source

[ITAL]Solar and Heliospheric Observatory[/ITAL] Sungrazing Comets with Prominent Tails: Evidence on Dust-Production Peculiarities

The Astrophysical Journal, 2000
A preliminary examination of the tails of 11 Solar and Heliospheric Observatory (SOHO) sungrazers, observed between 3 and 20 R☉ on their approach to the Sun, provides information on dust ejected from these comets and on the forces to which the microscopic grains are subjected.
openaire   +1 more source

The fluid dynamics of comet dust tails

3rd and 4th Aerospace Sciences Meeting, 1966
M. FINSON, R. PROBSTEIN
openaire   +1 more source

Actin cables and comet tails organize mitochondrial networks in mitosis

Nature, 2021
Andrew S Moore, Stephen M Coscia, Cory L Simpson   +2 more
exaly  

Roles of mRNA poly(A) tails in regulation of eukaryotic gene expression

Nature Reviews Molecular Cell Biology, 2021
Lori Anne Passmore, Jeff Coller
exaly  

Fine-scale structure in cometary dust tails II: Further evidence for a solar wind influence on cometary dust dynamics from the analysis of striae in comet C/2011 L4 Pan-STARRS

Icarus, 2023
Geraint H Jones
exaly  

WFUMB position paper on reverberation artefacts in lung ultrasound: B-lines or comet-tails?

Medical Ultrasonography, 2021
Helmut Prosch, Gino Soldati, Beatrice Hoffmann   +2 more
exaly