Results 61 to 70 of about 36,246 (179)

A Fast Second-order Solver for Stiff Multifluid Dust and Gas Hydrodynamics

The Astrophysical Journal Supplement Series
We present MDIRK: a multifluid second-order diagonally implicit Runge–Kutta method to study momentum transfer between gas and an arbitrary number ( N ) of dust species. The method integrates the equations of hydrodynamics with an implicit–explicit scheme
Leonardo Krapp, Juan Garrido-Deutelmoser, Pablo Benítez-Llambay, Kaitlin M. Kratter   +3 more
doaj   +1 more source

BICEP/Keck. XVI. Characterizing Dust Polarization through Correlations with Neutral Hydrogen

The Astrophysical Journal, 2023
We characterize Galactic dust filaments by correlating BICEP/Keck and Planck data with polarization templates based on neutral hydrogen (H i ) observations.
P. A. R. Ade, Z. Ahmed, M. Amiri, D. Barkats, R. Basu Thakur, C. A. Bischoff, D. Beck, J. J. Bock, H. Boenish, E. Bullock, V. Buza, J. R. Cheshire IV, S. E. Clark, J. Connors, J. Cornelison, M. Crumrine, A. Cukierman, E. V. Denison, M. Dierickx, L. Duband, M. Eiben, S. Fatigoni, J. P. Filippini, S. Fliescher, C. Giannakopoulos, N. Goeckner-Wald, D. C. Goldfinger, J. Grayson, P. Grimes, G. Hall, G. Halal, M. Halpern, E. Hand, S. Harrison, S. Henderson, S. R. Hildebrandt, J. Hubmayr, H. Hui, K. D. Irwin, J. Kang, K. S. Karkare, E. Karpel, S. Kefeli, S. A. Kernasovskiy, J. M. Kovac, C. L. Kuo, K. Lau, E. M. Leitch, A. Lennox, K. G. Megerian, L. Minutolo, L. Moncelsi, Y. Nakato, T. Namikawa, H. T. Nguyen, R. O’Brient, R. W. Ogburn IV, S. Palladino, M. A. Petroff, T. Prouve, C. Pryke, B. Racine, C. D. Reintsema, S. Richter, A. Schillaci, R. Schwarz, B. L. Schmitt, C. D. Sheehy, B. Singari, A. Soliman, T. St. Germaine, B. Steinbach, R. V. Sudiwala, G. P. Teply, K. L. Thompson, J. E. Tolan, C. Tucker, A. D. Turner, C. Umiltà, C. Vergès, A. G. Vieregg, A. Wandui, A. C. Weber, D. V. Wiebe, J. Willmert, C. L. Wong, W. L. K. Wu, H. Yang, K. W. Yoon, E. Young, C. Yu, L. Zeng, C. Zhang, S. Zhang, BICEP/Keck Collaboration   +94 more
doaj   +1 more source

Charging of Aggregate Grains in Astrophysical Environments

, 2013
The charging of dust grains in astrophysical environments has been investigated with the assumption these grains are homogeneous spheres. However, there is evidence which suggests many grains in astrophysical environments are irregularly-shaped ...
Hyde, Truell, Land, Victor, Ma, Qianyu, Matthews, Lorin   +3 more
core   +1 more source

Mountain‐top spherules: Criteria to identify natural and synthetic particles

Meteoritics &Planetary Science, EarlyView.
Abstract Natural microspherules are important tracers of geologic and environmental processes in modern and ancient deposits. However, anthropogenic contamination can dilute natural collections by releasing synthetic microspherules into the environment.
M. R. Boyd, M. J. Genge
wiley   +1 more source

Particle-in-cell Simulations of Plasma Oscillations Excited by Dust Impacts

The Astrophysical Journal
Dust-impact-induced plasma oscillations (dust ringing) detected in Saturn’s Enceladus plume provide a novel method for measuring electron density. However, since S. Ye et al. discovered such events, their underlying mechanisms remain unclear.
Han Wu, Kun Cheng, Shengyi Ye, Kaijun Liu, Hanxian Fang, Wenyue Li, Jian Wang, Guangzhou Wang   +7 more
doaj   +1 more source

Spherical nonthermal pulsational mode stability thermo-statistically moderated with extra-negative ions

Fundamental Plasma Physics
The presence of diverse negative ions is well-known to modify different collective waves and instabilities in diverse space and astrophysical environments.
Jonmoni Dutta, Ahmed Atteya, Pralay Kumar Karmakar   +2 more
doaj   +1 more source

Particle simulation of the strong magnetic field effect on dust particle charging process

Scientific Reports, 2023
A particle-in-cell simulation is modeled and run on a dusty plasma to determine the effect of the magnetic field on the process of dust-particle charging through electron–ion plasma.
Hadi Davari, Bizhan Farokhi, Mohammad Ali Asgarian   +2 more
doaj   +1 more source

Aqueous alteration in C2‐ung Bells through the analysis of carbonates – Does a CR origin ring true?

Meteoritics &Planetary Science, EarlyView.
Abstract Bells is an ungrouped carbonaceous chondrite that has in recent years been proposed as a CR‐an. This link to CR chondrites has previously been identified through the analysis of anhydrous silicates, for example, oxygen isotopic compositions of olivine (Marrocchi et al., 2023).
L. J. Riches, M. D. Suttle, I. A. Franchi, X. Zhao, M. M. Grady   +4 more
wiley   +1 more source

A Detection of Circumgalactic Dust at Megaparsec Scales with Maximum Likelihood Estimation

The Astrophysical Journal
One of the more surprising astrophysical discoveries of the past decade has been the presence of enormous quantities of dust at megaparsec distances from galaxies, which has important implications for galaxy evolution, the circumgalactic and ...
Jacqueline E. McCleary, Eric M. Huff, James G. Bartlett, Brandon S. Hensley   +3 more
doaj   +1 more source

Simulating Secondary Electron and Ion Emission from the Cassini Spacecraft in Saturn’s Ionosphere

The Planetary Science Journal, 2023
The Cassini spacecraft’s Grand Finale flybys through Saturn’s ionosphere provided unprecedented insight into the composition and dynamics of the gas giant’s upper atmosphere and a novel and complex spacecraft–plasma interaction.
Z. Zhang, R. T. Desai, O. Shebanits, F. L. Johansson, Y. Miyake, H. Usui   +5 more
doaj   +1 more source