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The particle yields and particle number ratios in Pb+Pb collisions at the LHC energy $\sqrt{s_{NN}}=2.76$ TeV are described within the integrated hydrokinetic model (iHKM) at the two different equations of state (EoS) for the quark-gluon…

高能物理 - 唯象学 · 物理学 2018-07-03 Yu. M. Sinyukov , V. M. Shapoval

The Epoch of Reionization (EoR), when the first luminous sources ionised the intergalactic medium, represents a new frontier in cosmology. The Square Kilometre Array Observatory (SKAO) will offer unprecedented insights into this era through…

The morphology of the 21-cm signal emitted by the neutral hydrogen present in the intergalactic medium (IGM) during the Epoch of Reionization (EoR) depends both on the properties of the sources of ionizing radiation and on the underlying…

Heating of charged particles via collisionless shocks, while ubiquitous in the universe, is an intriguing yet puzzling plasma phenomenon. One outstanding question is how electrons and ions approach an equilibrium after they were heated to…

The transmission of Lyman-{\alpha} (Ly{\alpha}) in the spectra of distant quasars depends on the density, temperature, and ionization state of the intergalactic medium (IGM). Therefore, high-redshift (z > 5) Ly{\alpha} forests could be…

宇宙学与河外天体物理 · 物理学 2021-07-07 Yuxiang Qin , Andrei Mesinger , Sarah E. I. Bosman , Matteo Viel

The hadronic phase in heavy-ion collisions plays a crucial role in shaping the final-state hadron abundances. In this work, we study Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 7.7-200 GeV using the Hadron Resonance Gas model in Partial…

核理论 · 物理学 2026-01-29 Rishabh Sharma , Chitrasen Jena , Volodymyr Vovchenko

A common occurrence in weakly collisional space plasmas is the unequal electron-ion temperatures. The pressure-strain interaction provides a mechanism-agnostic pathway for increasing plasma internal energy through spatiotemporally local…

等离子体物理 · 物理学 2025-12-18 M. Hasan Barbhuiya , Subash Adhikari

We show that the combined effect of cosmic magnetic field and a possible non-standard interaction between baryons and dark matter has interesting consequences on the thermal Sunyaev$-$Zel${'}$dovich (tSZ) effect depending on the temperature…

宇宙学与河外天体物理 · 物理学 2020-10-28 Arun Kumar Pandey , Sunil Malik , T. R. Seshadri

We use synthetic sightlines drawn through snapshots of the Technicolor Dawn simulations to explore how the statistics of neutral oxygen OI absorbers respond to hydrogen reionization. The ionization state of the circumgalactic medium (CGM)…

宇宙学与河外天体物理 · 物理学 2019-08-26 Caitlin Doughty , Kristian Finlator

The temperature of the low-density intergalactic medium (IGM) at high redshift is sensitive to the timing and nature of hydrogen and HeII reionization, and can be measured from Lyman-alpha forest absorption spectra. Since the memory of…

宇宙学与河外天体物理 · 物理学 2015-06-19 Adam Lidz , Matthew Malloy

We decompose the Lyman-{\alpha} (Ly{\alpha}) forest of an extensive sample of 74 high signal-to-noise ratio and high-resolution quasar spectra into a collection of Voigt profiles. Absorbers located near caustics in the peculiar velocity…

宇宙学与河外天体物理 · 物理学 2018-09-26 Hector Hiss , Michael Walther , Joseph F. Hennawi , José Oñorbe , John M. O'Meara , Alberto Rorai

The early stages in the evolution of the gluons produced in the central region of a head-on high-energy heavy ion collision is studied. An equation is given for the rate of change of transverse momentum into longitudinal momentum where the…

高能物理 - 唯象学 · 物理学 2009-10-31 A. H. Mueller

We investigate evolution of the intracluster medium (ICM), considering the relaxation process between the ions and electrons. According to the standard scenario of structure formation, ICM is heated by the shock in the accretion flow to the…

天体物理学 · 物理学 2009-10-30 Motokazu Takizawa

This study on plasma heating considers the time-dependent ionization process during a large solar flare on September 10, 2017, observed by Hinode/EIS. The observed FeXXIV / FeXXIII ratios increase downstream of the reconnection outflow, and…

太阳与恒星天体物理 · 物理学 2021-06-30 S. Imada

The front dynamics in the Harper (or Aubry-Andr\'e) model (which has a localization transition) is investigated using two different settings, particle number front where the system is at zero temperature, and initially, the particle numbers…

统计力学 · 物理学 2023-11-06 Gergo Roosz

Characterizing the epoch of reionization (EoR) at $z\gtrsim 6$ via the redshifted 21 cm line of neutral Hydrogen (HI) is critical to modern astrophysics and cosmology, and thus a key science goal of many current and planned low-frequency…

Recent observations have found several candidates for old warm neutron stars whose surface temperatures are above the prediction of the standard neutron star cooling scenario, and thus require some heating mechanism. Motivated by these…

高能天体物理现象 · 物理学 2020-02-20 Keisuke Yanagi , Natsumi Nagata , Koichi Hamaguchi

We investigate the evolution of the electroweak phase transition, using a one-Higgs effective potential that can be regarded as an approximation for the Minimal Supersymmetric Standard Model. The phase transition occurs in a small interval…

高能物理 - 唯象学 · 物理学 2009-10-31 Ariel Megevand

We present a detailed analysis of the ionization and thermal structure of the intergalactic medium (IGM) around a high-redshift QSO using a large suite of cosmological, multi-frequency radiative transfer (RT) simulations, exploring the…

宇宙学与河外天体物理 · 物理学 2017-04-18 Koki Kakiichi , Luca Graziani , Benedetta Ciardi , Avery Meiksin , Michele Compostella , Marius B. Eide , Saleem Zaroubi
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