Results 71 to 80 of about 1,156,215 (298)

Resistive Scaling in the Magnetic Helicity-driven Inverse Cascade

The Astrophysical Journal
The inverse cascade in MHD turbulence plays a crucial role in various astrophysical processes such as galaxy cluster formation, solar and stellar dynamo mechanisms, and the evolution of primordial magnetic fields in the early Universe.
Jiyao Zhang, Axel Brandenburg
doaj   +1 more source

Radio Polarisation Study of High Rotation Measure AGNs

Galaxies, 2017
As radio polarised emission from astrophysical objects traverse through foreground magnetised plasma, the physical conditions along the lines of sight are encrypted in the form of rotation measure (RM).
Yik Ki Ma, Sui Ann Mao, Aritra Basu, Carl Heiles, Jennifer West   +4 more
doaj   +1 more source

The First Magnetic Fields

, 2011
We review current ideas on the origin of galactic and extragalactic magnetic fields. We begin by summarizing observations of magnetic fields at cosmological redshifts and on cosmological scales.
A. Brandenburg, A. Kosowsky, A. Lazarian, A. Lewis, A. Mack, A. Neronov, A. Rebhan, A. Yahil, A.A. Starobinskii, A.H. Guth, A.J. Keane, B. Cheng, B. Himmetoglu, B. Himmetoglu, B. Ratra, B. Schenke, B.D. Fried, C. Bonvin, C. Caprini, C. Pinto, C. Pinto, C.D. Dermer, C.G. Tsagas, C.G. Tsagas, C.G. Tsagas, C.J. Hogan, C.L. Carilli, Christos G. Tsagas, D. Grasso, D.G. Yamazaki, D.H. Lyth, D.R.G. Schleicher, D.R.G. Schleicher, D.R.G. Schleicher, D.T. Son, Dominik R. G. Schleicher, Dongsu Ryu, E. Fenu, E. Weibel, E.-J. Kim, E.W. Kolb, F. Finelli, F. Hoyle, F. Hoyle, G. Davies, G. Sigl, G.B. Field, H. Maki, H. Stefani, H. Tashiro, H. Tashiro, H. Xu, I. Brown, J. Adamek, J. Adams, J. Martin, J. Silk, J. Silk, J.-P. Blaizot, J.A. Peacock, J.A. Quashnock, J.C. Tan, J.D. Barrow, J.D. Barrow, J.D. Barrow, J.D. Jackson, J.M. Cornwall, J.R. Shaw, K. Ichiki, K. Jedamzik, K. Jedamzik, K. Subramanian, K. Subramanian, K. Subramanian, K. Subramanian, K. Subramanian, K. Subramanian, K. Subramanian, K. Takahashi, K. Thorne, K.-T. Kim, Kandaswamy Subramanian, L. Biermann, L.F.S. Rodrigues, L.M. Widrow, Lawrence M. Widrow, M. Ando, M. Christensson, M. Gasperini, M. Giovannini, M. Langer, M. Strickland, M. Strickland, M.A. Stenrup, M.J. Rees, M.J. Rees, M.L. Bernet, M.N. Machida, M.S. Turner, M.V. Penston, N.Y. Gnedin, P. Anninos, P. Arnold, P. Arnold, P. Arnold, P. Arnold, P. Arnold, P. Hennebelle, P. Hennebelle, P. Romatschke, P.J. Greenberg, P.J.E. Peebles, P.J.E. Peebles, P.P. Kronberg, P.P. Kronberg, P.P. Kronberg, R. Banerjee, R. Banerjee, R. Banerjee, R. Durrer, R. Durrer, R. Durrer, R. Durrer, R.-G. Cai, R.A. Daly, R.B. Larson, R.E. Pudritz, R.M. Athreya, R.M. Kulsrud, R.M. Kulsrud, Rudolf A. Treumann, S. Bethke, S. Seager, S. Sur, S.C.O. Glover, S.D.M. White, S.I. Syrovatskii, S.K. Sethi, S.W. Hawking, St. Mrówczyński, St. Mrówczyński, T. Abel, T. Abel, T. Kahniashvili, T. Vachaspati, T.R. Seshadri, T.R. Seshadri, U. Frisch, V. Bromm, V. Demozzi, Ya.B. Zel’dovich, Yu.E. Pokrovsky   +151 more
core   +1 more source

Posterior Cortical Atrophy in the Asia‐Pacific: A Report From the PCA Asian Workgroup

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Posterior Cortical Atrophy (PCA) is a distinct dementia syndrome primarily affecting spatial abilities and visual processing. It is associated with degeneration in the posterior part of the brain. PCA is subclassified into PCA‐pure and PCA‐plus syndromes based on consensus criteria.
Yuttachai Likitjaroen, Ya‐Ting Chang, Levinia Lim, Pai‐Yi Chiu, Jung‐Lung Hsu, SangYun Kim, Wataru Narita, Na Young Ryoo, Kyoko Suzuki, Nagaendran Kandiah, Sebastian Crutch, Ming‐Chyi Pai   +11 more
wiley   +1 more source

Magnetorotational Instability in a Solar Near-surface Mean-field Dynamo

The Astrophysical Journal
We address the question whether the magnetorotational instability (MRI) can operate in the near-surface shear layer (NSSL) of the Sun and how it affects the interaction with the dynamo process.
Axel Brandenburg, Gustav Larsson, Fabio Del Sordo, Petri J. Käpylä   +3 more
doaj   +1 more source

Nonperturbative gravito-magnetic fields

, 1999
In a cold matter universe, the linearized gravito-magnetic tensor field satisfies a transverse condition (vanishing divergence) when it is purely radiative.
C. F. Sopuerta, Carlos F. Sopuerta, E. M. Lifshitz, G. F. R. Ellis, G. F. R. Ellis, G. F. R. Ellis, George F. R. Ellis, H. van Elst, H. van Elst, J. Bardeen, J. M. M. Senovilla, J. M. M. Senovilla, L. Kofman, P. A. Hogan, P. K. S. Dunsby, P. Szekeres, P. Szekeres, R. Maartens, R. Maartens, R. Maartens, R. Maartens, R. Maartens, R. Maartens, Roy Maartens, S. Matarrese, S. W. Hawking, S. Weinberg, W. Kundt, William M. Lesame   +28 more
core   +1 more source

Innate Immune Reprogramming Mediated by Endogenous Retroelement Dysregulation Drives Multiple Sclerosis Progression

Annals of Clinical and Translational Neurology, EarlyView.
Epigenetic reprogramming in hematopoietic stem and progenitor cells (HSPCs) and downstream myeloid cells, mediated by H3.3 downregulation and endogenous retroelement (ERE) overexpression, contributes to the progression of multiple sclerosis (MS). ABSTRACT Background Skewed myelopoiesis in the bone marrow has been identified as a key driver of multiple ...
Li‐Mei Xiao, Qiu‐Ping Zhao, Run‐Yun Li, Wei Chen, Huan‐Huan Song, Wan‐Jin Chen, Ying Fu   +6 more
wiley   +1 more source

Observations of the Fluctuations in the Interplanetary Magnetic Field around L1 Point during the Solar Transient Events of 2024 with MAG Payload on board Aditya-L1 Spacecraft

The Astrophysical Journal
The magnetometer (MAG) payload on board India’s first solar mission, Aditya-L1, is a dual-sensor fluxgate magnetometer designed to measure the interplanetary magnetic field (IMF) while operating in a halo orbit around the first Sun–Earth Lagrangian point
Vipin K. Yadav, R.K. Choudhary, M. Midhun Goutham   +2 more
doaj   +1 more source

Evolution of hydromagnetic turbulence from the electroweak phase transition

, 2017
We present new simulations of decaying hydromagnetic turbulence for a relativistic equation of state relevant to the early universe. We compare helical and nonhelical cases either with kinetically or magnetically dominated initial fields.
Brandenburg, Axel, Kahniashvili, Tina, Mandal, Sayan, Pol, Alberto Roper, Tevzadze, Alexander G., Vachaspati, Tanmay   +5 more
core   +1 more source

Paramagnetic Rim Lesions Are Associated With Trans‐Synaptic Degeneration of the Visual Pathway in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Retrograde trans‐synaptic degeneration (rTSD) from posterior visual pathway lesions in multiple sclerosis (MS) is characterized by hemi‐macular ganglion cell‐inner plexiform layer (GCIPL) thinning and contralateral visual field loss.
Abdul Jaber Tayem, Angel Liu, Sargis Manukyan, Mustafa Subhi, Elaina Luskin, Bryan Quah, Sreekanth Madhusoodhanan Nair, Arzu C. Has Silemek, Gabriela Zabala, Yujie Cui, Laura Locke, Paula Barreras, Marwa Kaisey, Vinicius Calsavara, Daniel S. Reich, Nancy L. Sicotte, Pascal Sati, Omar Al‐Louzi   +17 more
wiley   +1 more source