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The magnetohydrodynamic evolution of a dense spherical cloud as it interacts with a strong planar shock is studied, as a model for shock interactions with density inhomogeneities in the interstellar medium. The cloud is assumed to be small…

天体物理学 · 物理学 2009-04-13 Min-Su Shin , James M. Stone , Gregory F. Snyder

An anisotropic equation of state is proposed for accurate extrapolation of high-pressure shock Hugoniot states to other thermodynamics states for shocked single crystals and polycrystalline alloys. The proposed equation of state represents…

材料科学 · 物理学 2009-11-25 Alexander A. Lukyanov

Despite a wealth of experimental data for high-P_T processes in heavy-ion collisions, discriminating between different models of hard parton-medium interactions has been difficult. A key reason is that the pQCD parton spectrum at RHIC is…

高能物理 - 唯象学 · 物理学 2015-05-28 Thorsten Renk , Jussi Auvinen , Kari J. Eskola , Ulrich Heinz , Hannu Holopainen , Risto Paatelainen , Chun Shen

In a series of earlier papers, we have developed expressions for ion and electron velocity distribution functions and theirvelocity moments at the passage over the solar wind termination shock. As we have shown there, with introduction of…

太阳与恒星天体物理 · 物理学 2014-08-27 H. -J. Fahr , M. Siewert

The thermodynamic behavior of collapse transition in a fully flexible coarse-grained model of energy polydisperse polymer (EPP), a statistical model of random heteropolymer, is investigated in an implicit solvent by means of molecular…

软凝聚态物质 · 物理学 2025-03-04 Thoudam Vilip Singh , Lenin S. Shagolsem

This work explores the thermodynamic characteristics and geothermodynamics of a Bardeen black hole (BH) that interacts with a string cloud and is minimally connected to nonlinear electrodynamics. To avoid the singularities throughout the…

广义相对论与量子宇宙学 · 物理学 2025-04-25 Hamza Tariq , Usman Zafar , Shahid Chaudhary , Kazuharu Bamba , Abdul Jawad , Sanjar Shaymatov

The thermodynamics of a homopolymeric chain with both Van der Waals and highly-directional hydrogen bond interaction is studied. The effect of hydrogen bonds is to reduce dramatically the entropy of low-lying states and to give raise to…

凝聚态物理 · 物理学 2009-10-31 J. Borg , M. H. Jensen , K. Sneppen , G. Tiana

We analyze proton bulk parameters derived from Ulysses observations and investigate the polytropic behavior of solar wind protons over a wide range of heliocentric distances and latitudes. The large-scale variations of the proton density…

空间物理 · 物理学 2023-05-10 Georgios Nicolaou , George Livadiotis , David J. McComas

The internal disorder of hydrogenic Rydberg atoms as contained in their position and momentum probability densities is examined by means of the following information-theoretic spreading quantities: the radial and logarithmic expectation…

量子物理 · 物理学 2013-05-28 S. López-Rosa , I. V. Toranzo , P. Sánchez-Moreno , J. S. Dehesa

We analyze a merged Parker Solar Probe ($PSP$) and Solar Orbiter ($SO$) dataset covering heliocentric distances $13 \ R_{\odot} \lesssim R \lesssim 220$ $R_{\odot}$ to investigate the radial evolution of power and spectral-index anisotropy…

The basic equations of the thermodynamic system give the relationship between the internal energy, entropy and volume of two neighboring equilibrium states. By using the functional relationship between the state parameters in the basic…

广义相对论与量子宇宙学 · 物理学 2020-12-16 Xiong-Ying Guo , Ying Gao , Huai-Fan Li , Ren Zhao

Lyman $\alpha$ observations of the transiting exoplanet HD 209458b enable the study of exoplanets exospheres exposed to stellar EUV fluxes, as well as the interacting stellar wind properties. In this study we present 3D hydrodynamical…

地球与行星天体物理 · 物理学 2019-07-17 A. Esquivel , M. Schneiter , C. Villarreal D'Angelo , M. A. Sgró , L. Krapp

We show a parallelism between the expansion and compression of the atmosphere in the secondary cycle of a tropical cyclone with the fast expansion and compression of wet air in a bottle. We present a simple model in order to understand how…

大气与海洋物理 · 物理学 2013-11-19 Alejandro Romanelli , Italo Bove , Juan Rodríguez

Interplanetary (IP) shock plays a key role in causing the global dynamic changes of the geospace environment. For the perspective of Solar-Terrestrial relationship, it will be of great importance to estimate the properties of post-shock…

空间物理 · 物理学 2016-08-17 Hui Li , Chi Wang

Numerical studies have been performed to interpret the observed "shock overtaking magnetic cloud (MC)" event by a 2.5 dimensional magnetohydrodynamic (MHD) model in heliospheric meridional plane. Results of an individual MC simulation show…

太阳与恒星天体物理 · 物理学 2009-04-07 Ming Xiong , Huinan Zheng , Yuming Wang , Shui Wang

We review recent progress in understanding certain aspects of the thermodynamics of black holes and other horizons. Our discussion centers on various ``entropy bounds'' which have been proposed in the literature and on the current…

高能物理 - 理论 · 物理学 2017-08-23 Donald Marolf

We develop the formalism for determining the quasinormal modes of general relativistic multi-fluid compact stars in such a way that the impact of superfluid gap data can be assessed. Our results represent the first attempt to study true…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Lap-Ming Lin , N. Andersson , G. L. Comer

In this work we analyze the entropic properties of the Euler equations when the system is closed with the assumption of a polytropic gas. In this case, the pressure solely depends upon the density of the fluid and the energy equation is not…

数值分析 · 数学 2019-07-09 Andrew R. Winters , Christof Czernik , Moritz B. Schily , Gregor J. Gassner

The present study investigates how global thermodynamic properties of the climate system are affected by the changes in the intensity of the imposed oceanic heat transport in an atmospheric general circulation model in aqua-planet…

大气与海洋物理 · 物理学 2014-10-13 Alexander Schröder , Valerio Lucarini , Frank Lunkeit

Adding plasticizers is a well-known procedure to reduce the glass transition temperature in polymers. It has been recently shown that this effect shows a non-monotonic dependence on the size of additive molecules [The Journal of Chemical…

软凝聚态物质 · 物理学 2020-06-24 Elias M. Zirdehi , Thomas Voigtmann , Fathollah Varnik