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Context. High latitude molecular clouds (hereafter HLMCs) permit the study of interstellar gas dynamics and astrochemistry with good accuracy due to their proximity, generally clear lines of sight, and lack of internal star-forming activity…

Astrophysics of Galaxies · Physics 2023-01-16 Marco Monaci , Loris Magnani , Steven N. Shore

A standard nonlinear Schr\"{o}dinger equation has been established by using the reductive perturbation method to investigate the propagation of electrostatic dust-acoustic waves, and their modulational instability as well as the formation…

Plasma Physics · Physics 2020-08-25 R. K. Shikha , N. A. Chowdhury , A. Mannan , A. A. Mamun

We suggest that molecular cloud (MC) turbulence is a consequence of the very process of MC formation by collisions of larger-scale flows in the diffuse atomic gas, which generate turbulence in the accumulated gas through bending- mode…

Astrophysics · Physics 2007-05-23 Enrique Vazquez-Semadeni , Javier Ballesteros-Paredes , Ralf Klessen

It is shown that the equilibrium Generalized Mean Spherical Model of fluid structure may be extended to nonequilibrium states with equation of state information used in equilibrium replaced by an exact condition on the two-body distribution…

Soft Condensed Matter · Physics 2009-10-31 James F. Lutsko

Intrinsic Localized Modes (ILM) (or Discrete Breathers, DB) are localized oscillatory modes known to occur in atomic or molecular chains characterized by coupling and/or on-site potential nonlinearity. Quasi-crystals of charged mesoscopic…

Plasma Physics · Physics 2007-05-23 Ioannis Kourakis , Vassileios Basios , Padma Kant Shukla

Numerical simulations of monolayer dust crystals in an RF complex plasma were performed to examine the crystal structure and quantify the effects of including the collision enhanced ion current in the charging model. A GEC cell similar to a…

Plasma Physics · Physics 2021-03-23 Althea Wilson , Babak Shotorban

The objective of this paper is to construct a catalog providing the dust properties and the star formation efficiency (SFE) of the molecular clouds in the Large Magellanic Cloud (LMC). We use the infrared (IR) data obtained with the Spitzer…

Astrophysics of Galaxies · Physics 2015-05-20 D. Paradis , W. T. Reach , J. P. Bernard , S. Madden , K. Dobashi , M. Meixner , T. Onishi , A. Kawamura , Y. Fukui

We carry out a systematic study of the density structure of gas in the Central Molecular Zone (CMZ) in the Galactic center by extracting clumps from the APEX Telescope Large Area Survey of the Galaxy survey at 870 $\mu$m. We find that the…

Astrophysics of Galaxies · Physics 2020-07-15 Guang-Xing Li , Chuan-Peng Zhang

Context. It is almost banal to say that the interstellar medium (ISM) is structurally and thermodynamically complex. But the variety of the governing processes, including stellar feedback, renders the investigation challenging. High…

Astrophysics of Galaxies · Physics 2023-08-30 Marco Monaci , Loris Magnani , Steven N. Shore , Henrik Olofsson , Mackenzie R. Joy

We aim at understanding the formation of cloud layers in quasi-static substellar atmospheres. The time-dependent description presented in (Helling & Woitke 2006) is a kinetic model describing nucleation, growth and evaporation. It is…

Astrophysics · Physics 2009-11-13 Ch. Helling , P. Woitke , W. -F. Thi

To clarify observational consequence of bubble nucleations in inflationary era, we analyse dynamics of a spherical domain wall in an expanding universe. We consider a spherical shell of the domain wall with tension $\sigma$ collapsing in a…

General Relativity and Quantum Cosmology · Physics 2015-08-06 Norihiro Tanahashi , Chul-Moon Yoo

The two-dimensional hydrodynamic model for bounded dust flow dynamics in plasma is extended for analysis of driven vortex characteristics in presence of external transverse and weak magnetic field (${\bf B}$) in a planner setup and…

Plasma Physics · Physics 2020-11-09 Modhuchandra Laishram

The spatial structure of an ultra-low emittance electron bunch in a plasma wakefield blowout regime is studied. The full Li\'{e}nard-Wiechert potentials are considered for mutual inter-particle interactions in the framework of the…

Plasma Physics · Physics 2018-07-18 Lars Reichwein , Johannes Thomas , Alexander Pukhov

Electron cloud effects have recognized as as one of the most serious bottleneck for reaching design performances in presently running and proposed future storage rings. The analysis of these effects is usually performed with very time…

Accelerator Physics · Physics 2011-09-12 S. Petracca , A. Stabile , T. Demma , G. Rumolo

Understanding the impact of dust on the spectral energy distributions (SEDs) of galaxies is crucial for inferring their physical properties and for studying the nature of interstellar dust. We analyze dust attenuation curves for $\sim 6400$…

The characterization of the spectral energy distribution (SED) of dust emission has become a critical issue in the quest for primordial B-modes. The dust SED is often approximated by a modified black body (MBB) emission law but the extent…

Cosmology and Nongalactic Astrophysics · Physics 2021-03-12 Anna Mangilli , Jonathan Aumont , Aditya Rotti , François Boulanger , Jens Chluba , Tuhin Ghosh , Ludovic Montier

In the very last years, cosmological models where the properties of the dark components of the Universe - dark matter and dark energy - are accounted for by a single "dark fluid" have drawn increasing attention and interest. Amongst many…

Cosmology and Nongalactic Astrophysics · Physics 2012-04-02 Stefano Camera , Carmelita Carbone , Lauro Moscardini

Understanding the physical conditions of dark molecular clouds and star forming regions is an inverse problem subject to complicated chemistry that varies non-linearly with time and the physical environment. In this paper we apply a…

Solar and Stellar Astrophysics · Physics 2014-09-25 Antonios Makrymallis , Serena Viti

Selected theoretical developments in modeling of deposition of submicrometer size (submicron) particles on solid surfaces, with and without surface diffusion, of interest in colloid, polymer, and certain biological systems, are surveyed. We…

Materials Science · Physics 2008-10-16 Vladimir Privman

The existence of highly localized multi-site oscillatory structures (discrete multibreathers) in a nonlinear Klein-Gordon chain which is characterized by an inverse dispersion law is proven and their linear stability is investigated. The…

Pattern Formation and Solitons · Physics 2007-11-13 V. Koukouloyannis , I. Kourakis