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The evolution and distribution of the angular momentum of dark matter (DM) halos have been discussed in several studies over the past decades. In particular, the idea arose that angular momentum conservation should allow to infer the total…

Astrophysics of Galaxies · Physics 2015-10-14 A. F. Teklu , R. -S. Remus , K. Dolag , A. M. Beck , A. Burkert , A. S. Schmidt , F. Schulze , L. K. Steinborn

With the aim of understanding the role of outflows in star formation, we performed a statistical study of the physical parameters of outflows in eleven massive protoclusters associated with ultra-compact HII regions. A total of 106 outflow…

We investigate the optical response of strongly disordered quantum Hall states in two-dimensional Dirac materials and find qualitatively different effects in the radiation properties of the bulk versus the edge. We show that the far-field…

Mesoscale and Nanoscale Physics · Physics 2017-07-03 Michael J. Gullans , Jacob M. Taylor , Atac Imamoglu , Pouyan Ghaemi , Mohammad Hafezi

The radiation formation length for relativistic particles, $l_c \sim \gamma^2 \lambda$ ($\gamma$ is the Lorentz factor, $\lambda$ is the emitted wavelength), is much lager than the inter-particle distances in many astrophysical…

High Energy Astrophysical Phenomena · Physics 2021-10-27 Maxim Lyutikov

Hollow plasma has been introduced into the proton-driven plasma wakefield accelerators to overcome the issue of beam quality degradation caused by the nonlinear transverse wakefields varying in radius and time in uniform plasma. It has been…

Accelerator Physics · Physics 2018-05-10 Y. M. Li , G. X. Xia , Y. Zhao

Plasma dark matter, which arises in dissipative dark matter models, can give rise to large annual modulation signals from keV electron recoils. Previous work has argued that the DAMA annual modulation signal could have an explanation within…

High Energy Physics - Phenomenology · Physics 2018-09-13 R. Foot

We use self-similarity in N-body simulations of scale-free models to test for resolution dependence in the mass function and two-point correlation functions of dark matter halos. We use 1024$^3$ particle simulations performed with ABACUS,…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-22 M. Leroy , L. Garrison , D. Eisenstein , M. Joyce , S. Maleubre

Multipolar plasmon oscillation frequencies and corresponding damping rates for nanospheres formed of the simplest free-electron metals are studied. The possibility of controlling plasmon features by choosing the size and dielectric…

Optics · Physics 2008-04-15 A. Derkachova , K. Kolwas

We show using particle-in-cell (PIC) simulations and theoretical analysis that a high-quality electron beam whose density is modulated at angstrom scales can be generated directly using density downramp injection in a periodically modulated…

Accelerator Physics · Physics 2022-06-17 Xinlu Xu , Fei Li , Frank S. Tsung , Kyle Miller , Vitaly Yakimenko , Mark J. Hogan , Chan Joshi , Warren B. Mori

Nuclear radius is a fundamental structural observable that informs many properties of atomic nuclei and nuclear matter. Experimental studies of radii in drip line nuclei are in the forefront of research with radioactive ion beams. Of…

Nuclear Theory · Physics 2026-03-25 Y. R. Lin , S. M. Wang , W. Nazarewicz

longitudinal magnetic field often suffers the saturation effect in strong magnetic field region when the measurement performs in a single-wavelength point and linear calibration is adopted. In this study, we develop a method that can judge…

Solar and Stellar Astrophysics · Physics 2021-05-05 Haiqing Xu , Suo Liu , Jiangtao Su , Yuanyong Deng , Andrei Plotnikov , Xianyong Bai , Jie Chen , Xiao Yang , Jingjing Guo , Xiaofan Wang , Yongliang Song

In a recent one-dimensional numerical fluid simulation study [Saxena et al., Phys. Plasmas 13,032309 (2006)], it was found that an instability is associated with a special class of one-dimensional nonlinear solutions for modulated light…

Plasma Physics · Physics 2008-09-12 Vikrant Saxena , Amita Das , Sudip Sengupta , Predhiman Kaw , Abhijit Sen

We briefly review the approach to dipole-dipole scattering in holographic QCD developed in ARXIV:1202.0831. The Pomeron is modeled by exchanging closed strings between the dipoles and yields Regge behavior for the elastic amplitude. We…

High Energy Physics - Phenomenology · Physics 2013-05-01 Alexander Stoffers , Ismail Zahed

Studies on finite-size plasma have attracted a lot of attention lately. They can form by ionizing liquid droplets by lasers. The dynamical behavior of such plasma droplets is, therefore, a topic of significant interest. In particular,…

Plasma Physics · Physics 2024-08-05 Subhasish Bag , Vikrant Saxena , Amita Das

In this paper we study, in the time domain, the interaction between localized surface plasmons and photons in arbitrarily shaped metal nanoparticles, by using the Hopfield approach to quantize the plasmon modes, where the electron…

Storage ring-based steady-state microbunching (SSMB) is a promising approach for generating high-average-power coherent radiation, while the instabilities driven by coherent undulator radiation in the laser modulator (LM) is important for…

Accelerator Physics · Physics 2026-05-01 Yingjie Dai , Zhuoyuan Liu , Tong Li , Xiujie Deng , Lixin Yan

We have investigated via two-dimensional relativistic MHD simulations the long-term evolution of turbulence created by a relativistic shock propagating through an inhomogeneous medium. In the postshock region, magnetic field is strongly…

High Energy Astrophysical Phenomena · Physics 2014-03-05 Yosuke Mizuno , Martin Pohl , Jacek Niemiec , Bing Zhang , Ken-Ichi Nishikawa , Philip E. Hardee

We study the use of parallax microlensing to separate the effects of the mass function of dark massive halo objects (MHOs or `machos') on the one hand and their spatial distribution and kinematics on the other. This disentanglement is…

Astrophysics · Physics 2007-05-23 D. Markovic

The impact of nuclear deformation on the momentum distributions (MD) of occupied proton states in $^{238}$U is studied with a phenomenological Woods-Saxon (WS) shell model and the self-consistent Skyrme-Hartree-Fock (SHF) scheme. Four…

Nuclear Theory · Physics 2009-11-10 V. O. Nesterenko , V. P. Likhachev , P. -G. Reinhard , V. V. Pashkevich , W. Kleinig , J. Mesa

Compact plasmas, that exist near black-hole candidates and in gamma ray burst sources, commonly exhibit self-organized non-linear behavior. A model that simulates the non-linear behavior of compact radiative plasmas is constructed directly…

Astrophysics · Physics 2009-10-30 Ran Sivron
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