Results 31 to 40 of about 39,671 (263)

Effects of the Planar Galactic Tides and Stellar Mass on Comet Cloud Dynamics

, 2009
We report the first results of a research program to explore the sensitivity of the orbits of Oort cloud comets to changes in the strength of the Galactic tides in the plane of the disk and also to changes in the mass of the host star.
Gonzalez, Guillermo, Masi, Marco, Secco, Luigi   +2 more
core   +1 more source

A Distribution of Large Particles in the Coma of Comet 103P/Hartley 2 [PDF]

, 2015
The coma of comet 103P/Hartley 2 has a significant population of large particles observed as point sources in images taken by the Deep Impact spacecraft. We measure their spatial and flux distributions, and attempt to constrain their composition.
A'Hearn, Michael F., Bodewits, Dennis, Hermalyn, Brendan, Kelley, Michael S., Kissel, Jochen, Kolokolova, Ludmilla, Lindler, Don J., Lisse, Carey M.   +7 more
core   +1 more source

The Dust-to-Gas Ratio, Size Distribution, and Dust Fall-Back Fraction of Comet 67P/Churyumov-Gerasimenko: Inferences From Linking the Optical and Dynamical Properties of the Inner Comae

Frontiers in Physics, 2020
In this work, we present results that simultaneously constrain the dust size distribution, dust-to-gas ratio, fraction of dust re-deposition, and total mass production rates for comet 67P/Churyumov-Gerasimenko.
Raphael Marschall, Johannes Markkanen, Selina-Barbara Gerig, Selina-Barbara Gerig, Olga Pinzón-Rodríguez, Nicolas Thomas, Nicolas Thomas, Jong-Shinn Wu   +7 more
doaj   +1 more source

Heteroclinic Connections between Periodic Orbits in Planar Restricted Circular Three Body Problem - Part II [PDF]

, 2004
We present a method for proving the existence of symmetric periodic, heteroclinic or homoclinic orbits in dynamical systems with the reversing symmetry.
Wilczak, D., Zgliczynski, P.
core   +1 more source

MOND orbits in the Oort cloud

, 2010
We numerically investigate the features of typical orbits occurring in the Oort cloud (r\approx 50-150 kAU) in the low-acceleration regime of the MOdified Newtonian Dynamics (MOND).
Iorio, Lorenzo
core   +1 more source

Realistic Models for the Comet Dynamical Environment [PDF]

AIAA/AAS Astrodynamics Specialist Conference and Exhibit, 2006
An outgassing jet model is presented in support of spacecraft navigation for future missions to comets. The outgassing jet is modelled as an emission cone while the comet is modelled as a uniform density triaxial ellipsoid. The comet’s motion about the Sun is included in the model.
Byram, Sharyl Marie, Scheeres, Daniel J., Combi, Michael R.   +2 more
openaire   +1 more source

Dual‐Peptide Nanoplatform: Mesoporous Silica Nanoparticles Functionalized With a Cell‐Penetrating Peptide and Loaded With Rationally Designed Antimicrobial Peptides for Tuberculosis Therapy

Advanced Healthcare Materials, EarlyView.
Machine learning–guided engineering of a plectasin‐derived peptide yields DC05, a potent antimycobacterial candidate. Encapsulation into tuftsin‐functionalized mesoporous silica nanoparticles enhances intracellular delivery, stability, and activity against Mycobacterium tuberculosis while maintaining low cytotoxicity and minimal hemolysis. The combined
Christian S. Carnero Canales, Cesar Augusto Roque‐Borda, Ana Carolina Cerqueira Negri, Oswaldo Ramirez Delgado, Letícia Oliveira Catarin Nunes, Flávia Aparecida Resende, Hernane Barud, Norival Alves Santos‐Filho, Saulo Santesso Garrido, Karen Cristina Oliveira, Alexandra Ivo de Medeiros, Rafael Miguel Sábio, Fernando Rogério Pavan   +12 more
wiley   +1 more source

Strain Partitioning and Fault Kinematics in the Northern Qilian Shan (NE Tibet) Determined From Bayesian Inference of Geodetic Data

Geophysical Research Letters
Oblique convergence across the northern Qilian Shan is accommodated by sub‐parallel strike‐slip and thrust faults that ruptured simultaneously in the Mw 8 Gulang earthquake in 1927.
Yingfeng Zhang, Sam Wimpenny, Luca Dal Zilio, Xinjan Shan   +3 more
doaj   +1 more source

Comet 108P/Ciffreo: The Blob

The Astronomical Journal, 2023
Short-period comet 108P/Ciffreo is known for its peculiar double morphology, in which the nucleus is accompanied by a comoving, detached, diffuse “blob.” We report new observations of 108P/Ciffreo taken with the Hubble Space Telescope and the Nordic ...
Yoonyoung Kim, David Jewitt, Jane Luu, Jing Li, Max Mutchler   +4 more
doaj   +1 more source

Solar sailing: mission applications and engineering challenges [PDF]

, 2003
Solar sailing is emerging as a promising form of advanced spacecraft propulsion, which can enable exciting new space-science mission concepts. By exploiting the momentum transported by solar photons, solar sails can perform high-energy orbit transfer ...
McInnes, C.R.
core   +2 more sources