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The solar acoustic oscillations are likely stochastically excited by convective dynamics in the solar photosphere, though few direct observations of individual source events have been made and their detailed characteristics are still…

Solar and Stellar Astrophysics · Physics 2021-07-07 Shah Mohammad Bahauddin , Mark Peter Rast

We examine observational characteristics of multi-phase turbulent flows in the diffuse interstellar medium (ISM) using a synthetic radiation field of atomic and molecular lines. We consider the multi-phase ISM which is formed by thermal…

Astrophysics · Physics 2008-11-26 M. Yamada , H. Koyama , K. Omukai , S. Inutsuka

The natural environment of the Earth can act as a sensitive detector for dark matter in ultralight axions. When axions with masses between $1\times10^{-15}\,{\rm eV}$ and $1\times10^{-13}\,{\rm eV}$ pass through the Earth, they interact…

High Energy Physics - Phenomenology · Physics 2025-04-23 Atsushi Nishizawa , Atsushi Taruya , Yoshiaki Himemoto

The assumption of the capture by the Solar System of the electrically charged Planckian DM objects (daemons) from the galactic disk is confirmed not only by the St.Petersburg (SPb) experiments detecting particles with V<30 km/s. Here the…

General Physics · Physics 2007-12-16 Edward M. Drobyshevski , Mikhail E. Drobyshevski

This work constructs an advanced force field, the Completely Multipolar Model (CMM), to quantitatively reproduce each term of an energy decomposition analysis (EDA) for aqueous solvated alkali metal cations and halide anions and their ion…

Chemical Physics · Physics 2024-10-14 J. P. Heindel , L. Kim , M. Head-Gordon , T. Head-Gordon

Ion cyclotron resonance is one of the fundamental energy conversion processes through field-particle interaction in collisionless plasmas. However, the key evidence for ion cyclotron resonance (i.e., the coherence between electromagnetic…

Plasma Physics · Physics 2022-03-30 Qiaowen Luo , Xingyu Zhu , Jiansen He , Jun Cui , Hairong Lai , Daniel Verscharen , Die Duan

D-H type II radio bursts are widely thought to be caused by the coronal mass ejections (CMEs). However, it is still unclear where the exact source of the type IIs on the shock surface is. We identify the source regions of the…

Solar and Stellar Astrophysics · Physics 2015-06-11 Chenglong Shen , Chijian Liao , Yuming Wang , Pinzhong Ye , Shui Wang

As soon as the first particles emerge from an ion source, the source characteristics need to be determined. The total beam intensity, the transverse particle distributions, the beam divergence and emittance as well as the longitudinal…

Accelerator Physics · Physics 2014-04-03 U. Raich

Aerodynamic loads play a central role in many fluid dynamics applications, and we present a method for identifying the structures (or modes) in a flow that make dominant contributions to the time-varying aerodynamic loads in a flow. The…

Fluid Dynamics · Physics 2025-03-05 Suryansh Prakhar , Jung-Hee Seo , Rajat Mittal

This paper is the second in a series in which we present intermediate-resolution spectra for a complete sample of 14 compact radio sources, taken with the aim of investigating the impact of the nuclear activity on the cirumnuclear…

Cosmology and Nongalactic Astrophysics · Physics 2010-11-02 J. Holt , C. N. Tadhunter , R. Morganti

The ionosphere is the only large-scale plasma laboratory without walls that we have direct access to. From results obtained in systematic, repeatable experiments in this natural laboratory, where we can vary the stimulus and observe its…

Plasma Physics · Physics 2009-05-02 Bo Thidé

An electron-impact ion source based on photoelectron emission was developed for ionization of gases at pressures below 1e-4 mbar in an axial magnetic field in the order of 5 T. The ion source applies only DC fields, which makes it suitable…

Instrumentation and Detectors · Physics 2011-01-25 S. Lukic , B. Bornschein , G. Drexlin , F. Glück , O. Kazachenko , M. Schöppner , Ch. Weinheimer , M. C. R. Zoll

The largely unexplored decameter radio band (10-30 MHz) provides a unique window for studying a range of astronomical topics, such as auroral emission from exoplanets, inefficient cosmic ray acceleration mechanisms, fossil radio plasma, and…

Incoherent radar scatter from the ionosphere will, for equilibrium conditions, show two symmetric ion-acoustic lines, one for each direction of wave propagation. Many observation, from the EISCAT Svalbard Radar (ESR) for instance,…

Plasma Physics · Physics 2019-05-09 E. P. Kontar , H. L. Pecseli

Axion electrodynamics is based upon the Lagrangian of the electromagnetic (EM) field plus its interaction with the axions, and is accordingly a physically open system. It means that the four-divergence of the EM energy-momentum tensor is…

High Energy Physics - Phenomenology · Physics 2022-11-01 Iver H. Brevik , Moshe M. Chaichian

One of the most prominent sources for energetic particles in our solar system are huge eruptions of magnetised plasma from the Sun called coronal mass ejections (CMEs), which usually drive shocks that accelerate charged particles up to…

Solar and Stellar Astrophysics · Physics 2023-12-13 D. E. Morosan , J. Pomoell , C. Palmroos , N. Dresing , E. Asvestari , R. Vainio , E. K. J. Kilpua , J. Gieseler , A. Kumari , I. C. Jebaraj

Electrons traveling along magnetic field lines from Jupiter to Io, driven by quasi-linear diffusion (QLD), emit synchrotron radiation. By using the small angle approximation, the kinematic equation for the particle distribution gives us the…

High Energy Astrophysical Phenomena · Physics 2023-12-05 Akaki Chkhaidze , Erekle Kalichava

The nature of dark matter is a longstanding mystery in cosmology, which can be studied with laboratory or collider experiments, as well as astrophysical and cosmological observations. In this work, we propose realistic and efficient…

Cosmology and Nongalactic Astrophysics · Physics 2021-04-15 José Luis Bernal , Andrea Caputo , Marc Kamionkowski

JEM-EUSO is a space science mission to explore extreme energies and physics of the Universe. Its instrument will watch the dark-side of the earth and will detect UV photons emitted from the extensive air shower caused by an Ultra-High…

High Energy Astrophysical Phenomena · Physics 2015-05-14 Yoshiyuki Takahashi , the JEM-EUSO Collaboration

DArk Matter Particle Explorer (DAMPE) is a general purpose high energy cosmic ray and gamma ray observatory, aiming to detect high energy electrons and gammas in the energy range 5 GeV to 10 TeV and hundreds of TeV for nuclei. This paper…

Instrumentation and Methods for Astrophysics · Physics 2018-06-25 Hao Zhao , Wen-Xi Peng , Huan-Yu Wang , Rui Qiao , Dong-Ya Guo , Hong Xiao , Zhao-Min Wang