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Since the discovery of superhumps in 1974, these photometric modulations have provided a crucial observational window into disk instabilities in cataclysmic variable stars, particularly the tidal instability associated with the 3:1…

Solar and Stellar Astrophysics · Physics 2026-02-17 Daisaku Nogami

The degree of turbulent pressure support by residual gas motions in galaxy clusters is not well known. Mass modelling of combined X-ray and Sunyaev Zel'dovich observations provides an estimate of turbulent pressure support in the outer…

Cosmology and Nongalactic Astrophysics · Physics 2020-04-22 M. Angelinelli , F. Vazza , C. Giocoli , S. Ettori , T. W. Jones , G. Brunetti , M. Brüggen , D. Eckert

Three-dimensional special relativistic magnetohydrodynamic simulations are performed to investigate properties of the downstream turbulence generated by the interaction between a relativistic shock wave and multiple clumps. We analyze the…

High Energy Astrophysical Phenomena · Physics 2025-04-24 Kanji Morikawa , Yutaka Ohira , Takumi Ohmura

In this paper we report the first close, high-resolution observations of downward-directed terrestrial gamma-ray flashes (TGFs) detected by the large-area Telescope Array cosmic ray observatory, obtained in conjunction with broadband VHF…

Atmospheric and Oceanic Physics · Physics 2021-02-03 J. W. Belz , P. R. Krehbiel , J. Remington , M. A. Stanley , R. U. Abbasi , R. LeVon , W. Rison , D. Rodeheffer , the Telescope Array Scientific Collaboration , : , T. Abu-Zayyad , M. Allen , E. Barcikowski , D. R. Bergman , S. A. Blake , M. Byrne , R. Cady , B. G. Cheon , M. Chikawa , A. di Matteo , T. Fujii , K. Fujita , R. Fujiwara , M. Fukushima , G. Furlich , W. Hanlon , M. Hayashi , Y. Hayashi , N. Hayashida , K. Hibino , K. Honda , D. Ikeda , T. Inadomi , N. Inoue , T. Ishii , H. Ito , D. Ivanov , H. Iwakura , H. M. Jeong , S. Jeong , C. C. H. Jui , K. Kadota , F. Kakimoto , O. Kalashev , K. Kasahara , S. Kasami , H. Kawai , S. Kawakami , K. Kawata , E. Kido , H. B. Kim , J. H. Kim , J. H. Kim , V. Kuzmin , M. Kuznetsov , Y. J. Kwon , K. H. Lee , B. Lubsandorzhiev , J. P. Lundquist , K. Machida , H. Matsumiya , J. N. Matthews , T. Matuyama , R. Mayta , M. Minamino , K. Mukai , I. Myers , S. Nagataki , K. Nakai , R. Nakamura , T. Nakamura , Y. Nakamura , T. Nonaka , H. Oda , S. Ogio , M. Ohnishi , H. Ohoka , Y. Oku , T. Okuda , Y. Omura , M. Ono , A. Oshima , S. Ozawa , I. H. Park , M. Potts , M. S. Pshirkov , D. C. Rodriguez , G. Rubtsov , D. Ryu , H. Sagawa , R. Sahara , K. Saito , Y. Saito , N. Sakaki , T. Sako , N. Sakurai , K. Sano , T. Seki , K. Sekino , F. Shibata , T. Shibata , H. Shimodaira , B. K. Shin , H. S. Shin , J. D. Smith , P. Sokolsky , N. Sone , B. T. Stokes , T. A. Stroman , Y. Takagi , Y. Takahashi , M. Takeda , R. Takeishi , A. Taketa , M. Takita , Y. Tameda , K. Tanaka , M. Tanaka , Y. Tanoue , S. B. Thomas , G. B. Thomson , P. Tinyakov , I. Tkachev , H. Tokuno , T. Tomida , S. Troitsky , Y. Tsunesada , Y. Uchihori , S. Udo , T. Uehama , F. Urban , M. Wallace , T. Wong , M. Yamamoto , H. Yamaoka , K. Yamazaki , K. Yashiro , M. Yosei , H. Yoshii , Y. Zhezher , Z. Zundel

This work reports an experimental characterisation of the flow properties in a homogeneous bubble swarm rising at high-Reynolds-numbers within a homogeneous and isotropic turbulent flow. Both the gas volume fraction {\alpha} and the…

Fluid Dynamics · Physics 2017-10-11 Elise Almeras , Varghese Mathai , Detlef Lohse , Chao Sun

With the aim of assessing internal wave-driven mixing in the ocean, we develop a new technique for direct numerical simulations of stratified turbulence. Since the spatial scale of oceanic internal gravity waves is typically much larger…

Fluid Dynamics · Physics 2021-04-07 Y. Onuki , S. Joubaud , T. Dauxois

It is now known that capillary waves driven upon a fluid interface by high frequency ($>1$~MHz) ultrasound exhibit capillary wave turbulence: the appearance of waves with phase and wavelength far removed from the excitation signal that…

Fluid Dynamics · Physics 2023-10-18 William Connacher , Jeremy Orosco , Oliver Schmidt , James Friend

Breaking waves entrain gas beneath the surface. The wave-breaking process energizes turbulent fluctuations that break bubbles in quick succession to generate a wide range of bubble sizes. Understanding this generation mechanism paves the…

Fluid Dynamics · Physics 2021-02-24 Wai Hong Ronald Chan , Perry Johnson , Parviz Moin

Turbulence plays an important role in shaping the interstellar medium, and strongly influences star formation. We aim to identify the physical processes capable of sustaining HI turbulence in the solar neighborhood. We compare recent HI…

In order to investigate the origin of the interstellar turbulence, detailed observations in the CO J=1--0 and 3--2 lines have been carried out in an interacting region of a molecular cloud with an HII region. As a result, several 1,000 to…

Very weakly density-stratified, near-homogeneous 'NH' conditions are found in the deep Western Mediterranean Sea. Under these conditions, over vertical ranges of several hundreds of meters water temperature varies only a few 0.0001degrC and…

Atmospheric and Oceanic Physics · Physics 2026-01-09 Hans van Haren

The deep sea is weakly stratified in density but shows considerable variations in turbulent motions in all three directions. When registered by moored high-resolution temperature 'T'-sensors, the motions cause variations of 0.01degrC or…

Atmospheric and Oceanic Physics · Physics 2026-01-09 Hans van Haren

Strongly intermittent turbulence is observed in the shadow of a limiter in the Large Plasma Device (LAPD) at UCLA [W. Gekelman, H. Pfister, Z. Lucky, J. Bamber, D. Leneman, and J. Maggs, Rev. Sci. Inst. {\bfseries 62}, 2875 (1991)]. The…

Plasma Physics · Physics 2009-11-11 T. A. Carter

High-resolution soil moisture (SM) observations are critical for agricultural monitoring, forestry management, and hazard prediction, yet current satellite passive microwave missions cannot directly provide retrievals at tens-of-meter…

Signal Processing · Electrical Eng. & Systems 2026-01-27 Runze Zhang , Ishfaq Aziz , Derek Houtz , Yuxiang Zhao , Trent W. Ford , Adam C. Watts , Mohamad Alipour

Magnetic reconnection has been suggested to play an important role in the dynamics and energetics of plasma turbulence by spacecraft observations, simulations and theory over the past two decades, and recently, by magnetosheath observations…

Plasma Physics · Physics 2022-01-03 Tak Chu Li , Yi-Hsin Liu , Yi Qi

It is currently believed that the turbulent fluctuations pervade the outermost heliosphere. Turbulence, magnetic reconnection, and their link may be responsible for magnetic energy conversion in these regions. The governing mechanisms of…

The outer envelopes of massive ($M\gtrsim10\,M_{\odot}$) stars exhibit large increases in opacities from forests of lines and ionization transitions (particularly from iron and helium) that trigger near-surface convection zones.…

Solar and Stellar Astrophysics · Physics 2023-07-19 William Schultz , Lars Bildsten , Yan-Fei Jiang

In 2012, Voyager 1 became the first in situ probe of the very local interstellar medium. The Voyager 1 Plasma Wave System has given point estimates of the plasma density spanning about 30 astronomical units (au) of interstellar space,…

Astrophysics of Galaxies · Physics 2021-12-14 S. K. Ocker , J. M. Cordes , S. Chatterjee , D. A. Gurnett , W. S. Kurth , S. R. Spangler

We study the properties of chaotic motions in the intra cluster medium using a set of 20 galaxy clusters simulated with large dynamical range, using the Adaptive Mesh Refinement code ENZO (e.g. Norman et al.2007). The adopted setup allows…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 F. Vazza , G. Brunetti , C. Gheller , R. Brunino , M. Brüggen

Remarkable progress has been made in understanding turbulent astrophysical plasmas in past decades including, notably, the solar wind and the interstellar medium. In the case of the solar wind, much of this progress has relied on in situ…

Solar and Stellar Astrophysics · Physics 2019-04-12 Tim Bastian , James Cordes , Justin Kasper , Adam Kobelski , Kelly Korreck , Gregory Howe , Steven Spangler , Chadi Salem , Angelos Vourlidas