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Thermal transient responses of superconducting magnets can be simulated using the finite element (FE) method. Some accelerator magnets use cables whose electric insulation is significantly thinner than the bare electric conductor. The FE…

Edge localized modes (ELMs) and runaway electrons (REs) pose significant challenges for all Tokamak devices and act as potent heat sources, potentially shortening the lifespan of plasma-facing materials (PFMs). These thermal loads can…

Plasma Physics · Physics 2025-12-02 Ali Masoudi , Davoud Iraji , Chapar Rasouli

The paper presents a simplified formula to determine an electron temperature, Te(He I), for planetary nebulae (PNe) using the He I 7281/6678 line flux ratio. In our previous studies of Te(He I) (Zhang et al. 2005), we used the He I line…

Astrophysics · Physics 2007-05-23 Y. Zhang , R. H. Rubin , X. -W. Liu

This work presents the microscopic calculation of energy rates ({\gamma} ray heating and (anti)neutrino cooling rates) due to weak decay of selected Fe isotopes. The isotopes have astrophysical significance during the presupernova evolution…

Nuclear Theory · Physics 2025-03-17 Jameel-Un Nabi , Asim Ullah , Majid Iqbal

This study investigates the effect of the ion-to-electron temperature ratio ($T_i/T_e$) on microturbulence driven transport in Quiescent H-mode (QH-mode) plasmas in the DIII-D tokamak. Utilizing the Gyrokinetic Toroidal Code (GTC) and the…

We report the statistical properties of temperature and thermal energy dissipation rate in low-Prandtl number turbulent Rayleigh-B\'enard convection. High resolution two-dimensional direct numerical simulations were carried out for the…

Fluid Dynamics · Physics 2019-12-12 Ao Xu , Le Shi , Heng-Dong Xi

AT 2019qiz is the first standard optical tidal disruption event (TDE) with detection of X-ray quasi-periodic eruptions (QPEs), providing strong evidence for TDE-QPE association. Moreover, it belongs to the rare subset of optical TDEs with…

High Energy Astrophysical Phenomena · Physics 2025-08-04 Mingxin Wu , Ning Jiang , Jiazheng Zhu , Di Luo , Liming Dou , Tinggui Wang

Gradual solar energetic particle (SEP) events, usually attributed to shock waves driven by coronal mass ejections (CMEs), show a wide variety of temporal behaviors. For example, TO, the >10 MeV proton onset time with respect to the launch…

Solar and Stellar Astrophysics · Physics 2023-03-29 Kosuke Kihara , Ayumi Asai , Seiji Yashiro , Nariaki V. Nitta

Thermal stability of hydrogenated amorphous Si/Ge multilayers has been investigated by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Small-Angle X-Ray Diffraction (SAXRD) techniques. Amorphous H-Si/Ge…

Materials Science · Physics 2009-02-11 A. Csik , M. Serenyi , Z. Erdelyi , A. Nemcsics , C. Cserhati , G. A. Langer , D. L. Beke , C. Frigeri , A. Simon

The light curve of the TeV emission in GRB 221009A displays a smooth transition from an initial rapid rise to a slower rise and eventually a decay phase. The smooth temporal profile of the TeV emission suggests that it mainly results from…

High Energy Astrophysical Phenomena · Physics 2024-10-10 Cui-Yuan Dai , Jian-He Zheng , Xiao-Hong Zhao , Ruo-Yu Liu , Xiang-Yu Wang

We study here the formation of heavy r-process nuclei in the high-entropy environment of rapidly expanding neutrino-driven winds from compact objects. In particular, we explore the sensitivity of the element creation in the A>130 region to…

Astrophysics · Physics 2009-11-13 I. V. Panov , H. -Th. Janka

The Transition Edge Sensor is extremely sensitive to the change of temperature, combined with the high-Z metal of a certain thickness, it can realize the high energy resolution measurement of particles such as X-rays. X-rays with energies…

Electron mass is known to modify at finite temperatures and densities. Weak nuclear processes have a great impact on electron mass which modifies in a statistical background. We demonstrate how the temperature change in electron mass is…

High Energy Astrophysical Phenomena · Physics 2024-12-31 Samina Masood , Jaskeerat Singh

Temperature (12K $\le$ T $\le$ 300K) dependent extended X-ray absorption fine structure (EXAFS) studies at the Fe K edge in FeSe$_{1-x}$Te$_x$ (x = 0, 0.5 and 1.0) compounds have been carried out to understand the reasons for increase in…

Superconductivity · Physics 2015-06-23 Kapil E. Ingle , K. R. Priolkar , Rayees A. Zargar , V. P. S. Awana , S. Emura

Using numerical simulations, we study the effects of thermal conduction and radiative cooling on the formation and evolution of solar jets with some macrospicules features. We initially assume that the solar atmosphere is rarely in…

Solar and Stellar Astrophysics · Physics 2021-05-12 J. J. González-Avilés , K. Murawski , A. K. Srivastava , T. V. Zaqarashvili , J. A. González-Esparza

A warm corona has been widely proposed to explain the soft X-ray excess (SE) above the 2--10 keV power law extrapolation in AGNs. In actual spectral fittings, the warm coronal seed photon temperature ($T_{\rm s}$) is usually assumed to be…

High Energy Astrophysical Phenomena · Physics 2024-05-27 Ze-Yuan Tang , Jun-Jie Feng , Jun-Hui Fan

In the gravitational wave event GW170817, there was a $\sim 10$ hours gap before electromagnetic (EM) observations, without detection of the cocoon. The cocoon is heated by a \textit{short} gamma-ray burst (\textit{s}GRB) jet propagating…

High Energy Astrophysical Phenomena · Physics 2023-07-05 Hamid Hamidani , Kunihito Ioka

The theoretical intensities of the soft X-ray Fe XVII lines arising from 2l-3l' transitions are reexamined using a three-ion collisional-radiative model that includes the contributions to line formation of radiative recombination (RR),…

Astrophysics · Physics 2016-08-30 Rami Doron , Ehud Behar

The heating of the solar wind is a key to understand its dynamics and acceleration process. The observed radial decrease of proton temperature in the solar wind is slow compared to the adiabatic prediction and it is thought to be caused by…

Space Physics · Physics 2026-03-03 Victor Montagud-Camps , Roland Grappin , Andrea Verdini

We use a three-specie fluid model of electric discharge in air to simulate streamer evolution from the avalanche-to-streamer transition to the collision of opposite-polarity streamers. We estimate the upper limit on the production of…

Space Physics · Physics 2018-08-03 Nikolai G. Lehtinen , Nikolai Østgaard