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We continue our work on a proposal for what dark matter could be, namely that the dark matter consists of essentially macroscopic objects built from ordinary matter. The only element of new physics is that there should exist several types…

High Energy Physics - Phenomenology · Physics 2023-05-23 Holger Bech Nielsen , Colin D. Froggatt

We study the slowing down of particle beams passing through the dusty plasma with power-law kappa-distributions. Three plasma components, electrons, ions and dust particles, can have different kappa-parameter. We derive the deceleration…

Plasma Physics · Physics 2019-02-22 Jiulin Du , Ran Guo , Zhipeng Liu , Songtao Du

Interstellar dust is spread in galaxies over large scales, often far beyond the stellar disks. Several mechanisms can be responsible for carrying the dust both in the vertical and radial directions, producing in general different spatial…

Astrophysics · Physics 2007-05-23 Yu. A. Shchekinov

The sustainability of urban environments is an increasingly relevant problem. Air pollution plays a key role in the degradation of the environment as well as the health of the citizens exposed to it. In this chapter we provide a review of…

Machine Learning · Computer Science 2022-01-03 Pablo Torres , Beril Sirmacek , Sergio Hoyas , Ricardo Vinuesa

A cyber physical human complex system failure prevents the accomplishment of the systems intended function. The failure of a complex system could be a breakdown of any system hardware, human related factors, application software, or the…

Software Engineering · Computer Science 2021-10-06 Tarannom Parhizkar , Theresa Stewart , Lixian Huang , Ali Mosleh

We introduce a possible disruption mechanism of dust grains in planet formation by their spinning motion. This mechanism has been discussed as rotational disruption for the interstellar dust grains. We theoretically calculate whether porous…

Earth and Planetary Astrophysics · Physics 2021-06-09 Misako Tatsuuma , Akimasa Kataoka

Dust is a key component of the Universe, especially regarding galaxies evolution, playing an essential role for both the physics and chemistry of the interstellar medium. In this paper, we give a brief review of interstellar dust. We…

Astrophysics of Galaxies · Physics 2015-03-19 M. Compiegne

A bottleneck can largely deteriorate the flow, such as a traffic light or an on-ramp at a road. To alleviate bottleneck situations, one of the important strategies is to control the input rate to suit the state of the road. In this study,…

Cellular Automata and Lattice Gases · Physics 2019-03-28 Hiroki Yamamoto , Daichi Yanagisawa , Katsuhiro Nishinari

The performance and safe operation of a particle accelerator is closely connected to the transverse emittance of the beams it produces. For this reason many techniques have been developed over the years for monitoring the transverse…

Accelerator Physics · Physics 2020-05-18 Enrico Bravin

Particle accelerators and their detectors are the world's most powerful microscopes. They enable us to inspect the constituents of matter at attometer scales, study matter under unusual conditions, and concentrate extraordinary amounts of…

High Energy Physics - Phenomenology · Physics 2018-11-13 Chris Quigg

The research on the physical features of transportation and structurization processes by the air-dust aerosol in the granular filtering medium with the cylindrical coal adsorbent granules in an air filter of the adsorption type in the…

Other Condensed Matter · Physics 2012-09-09 Oleg P. Ledenyov , Ivan M. Neklyudov , P. Ya. Poltinin , L. I. Fedorova

An algorithm has been developped, which makes it possible to automatically extract trajectories of a large number of particles from fast imaging data, allowing a statistical analysis of particles trajectories under various plasma…

Plasma Physics · Physics 2015-05-19 S. Bardin , J-L. Briançon , F. Brochard , V. Martin , Y. Zayachuk , R. Hugon , J. Bougdira

Emittance is a beam quality that is vital for many future applications of advanced accelerators, such as compact free-electron lasers and linear colliders. In this paper, we review the challenges of preserving the transverse emittance…

Accelerator Physics · Physics 2022-05-12 Carl A. Lindstrøm , Maxence Thévenet

With the growth of coal production, the load on the production capacity of coal enterprises also increases, which leads to a concomitant increase in dust formation in both opencast and underground methods of mining coal deposits. Dust,…

Systems and Control · Electrical Eng. & Systems 2024-01-31 Daria Trubicina , Kirill Varnavskiy , Alexander Ermakov , Fedor Nepsha , Roman Kozlov , Naser Golsanami , Sergey Zhironkin

Studying the physical environments of low mass and high mass cores using dust continuum emission provides important observational constraints on theoretical models of star formation. The motivation and procedure for modeling dust continuum…

Astrophysics · Physics 2008-11-26 Yancy L. Shirley , Kaisa E. Mueller , Chadwick H. Young , Neal J. Evans

The continuous limit of large systems of particles of finite size on the line is described. The particles are assumed to move freely and stick under collision, to form compound particles whose mass and size is the sum of the masses and…

Mathematical Physics · Physics 2009-11-11 Gershon Wolansky

Complex plasmas are interesting systems as the charged dust can self-assemble into different types of ordered structures. To understand the mechanisms which govern the transitions from one type of structure to another, it is necessary to…

Coupled-bunch instabilities excited by the interaction of the particle beam with its surroundings can seriously limit the performance of circular particle accelerators. These instabilities can be cured by the use of active feedback systems…

Accelerator Physics · Physics 2016-01-21 M. Lonza , H. Schmickler

For linear infinite systems the approximate controllability problem by control constraints is considered. Controllability conditions represented via system parameters are obtained. Partial differential control systems and control systems…

solv-int · Physics 2008-02-03 B. Shklyar

Polarized dust emission outside of disks reveal the magnetic field morphology of molecular clouds. Within disks, however, polarized dust emission can arise from very different mechanisms (e.g., self-scattering), and each of them are useful…