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Utilizing four archival X-ray datasets taken with the Hard X-ray Detector onboard Suzaku, timing studies were performed on three magnetars, 1E 1841-045 (observed in 2006), SGR 0501+4516 (2008), and 1RXS J170849.0-400910 (2009 and 2010).…

High Energy Astrophysical Phenomena · Physics 2024-07-23 Kazuo Makishima , Nagomi Uchida , Teruaki Enoto

We consider the voltage structure in the open-field circuit and outer magnetosphere of a magnetar. The standard polar-cap model for radio pulsars is modified significantly when the polar magnetic field exceeds 1.8x10^{14} G. Pairs are…

Astrophysics · Physics 2009-11-13 Christopher Thompson

The paper presents an experimental study of the capillary electrostatic instability occurring under effect of a constant electric field on a magnetic fluid individual peak. The peaks under study occur at disintegration of a magnetic fluid…

Fluid Dynamics · Physics 2013-07-31 Levon Mkrtchyan , Arthur Zakinyan , Yuri Dikansky

Magnetic field estimates for nearby isolated neutron stars (INS) help to constrain both the characteristics of the population and the nature of their peculiar X-ray spectra. From a series of XMM-Newton observations of RX J2143.0+0654, we…

High Energy Astrophysical Phenomena · Physics 2009-11-13 D. L. Kaplan , M. H. van Kerkwijk

We present deep polarimetric observations at 154 MHz with the Murchison Widefield Array (MWA), covering 625 deg^2 centered on RA=0 h, Dec=-27 deg. The sensitivity available in our deep observations allows an in-band, frequency-dependent…

This Letter presents the first evidence of a new and unique feature of spontaneous reconnection at multiple sites in electron current sheet, viz. nested quadrupole structure of Hall field at electron scales, in Cluster observations. The new…

Plasma Physics · Physics 2014-05-26 Neeraj Jain , A. Surjalal Sharma

Rotation Measure synthesis (RM synthesis) of the Westerbork Synthesis Radio Telescope (WSRT) observations at 2 m wavelength of the FAN region at l=137deg, b=+7deg shows the morphology of structures in the ionized interstellar medium. We…

Astrophysics of Galaxies · Physics 2015-06-11 Marco Iacobelli , Marijke Haverkorn , Peter Katgert

The magnetic relaxation characteristics are investigated in the two-dimensional ($l^{}_x\times l^{}_y$) assembly of nanoparticles as a function of out-of-plane positional disorder strength $\Delta(\%)$ using numerical simulations. Such…

Materials Science · Physics 2021-09-28 Manish Anand

We investigate the magnetic dipole moments in even-even self-conjugate nuclei from ${}^{12}\mathrm{C}$ to ${}^{44}\mathrm{Ti}$. For the latter, the measured gyromagnetic factors of excited states turn out to assume the same value of $g…

Nuclear Theory · Physics 2022-11-23 Gianluca Stellin , Karl-Heinz Speidel , Ulf-G. Meißner

A recent experiment has questioned the standard relative value of spin-orbit and crystal-field strengths in rare-earth $4f$ electron systems, according to which the first should be one order of magnitude larger that the second. We find it…

Other Condensed Matter · Physics 2011-05-24 Keisuke Hatada , Kuniko Hayakawa , Fabrizio Palumbo

We propose a model of magnetic-field growth in galaxy clusters whereby the field is amplified by a factor of about 10^8 over a cosmologically short time of ~10^8 yr. Our model is based on the idea that the viscosity of the intracluster…

Astrophysics · Physics 2010-11-11 A. A. Schekochihin , S. C. Cowley

The electron beam-plasma system is ubiquitous in the space plasma environment. Here, using a Darwin particle-in-cell method, the excitation of electrostatic and whistler instabilities by a gyrating electron beam is studied in support of…

Plasma Physics · Physics 2018-12-31 Xin An , Jacob Bortnik , Bart Van Compernolle , Viktor Decyk , Richard Thorne

We investigate the dynamics of two-dimensional assemblies of rod-shaped magnetic colloids under the influence of an external rotating magnetic field. Using Molecular Dynamics, we simulate the formation of patterns that emerge based on the…

Soft Condensed Matter · Physics 2024-05-27 Jorge L. C. Domingos , F. Q. Potiguar , C. L. N. Oliveira , W. P. Ferreira

The goal of this work is to constrain the strength and structure of the magnetic field in the nearby cluster of galaxies A2255. At radio wavelengths A2255 is characterized by the presence of a polarized radio halo at the cluster center, a…

Astrophysics · Physics 2009-11-11 F. Govoni , M. Murgia , L. Feretti , G. Giovannini , K. Dolag , G. B. Taylor

We investigate the magnetism of the Co$^{II}_4$(OH)$_2$(C$_1$$_0$H$_1$$_6$O$_4$)$_3$ metal-organic framework which displays complex inorganic chains separated from each other by distances of 1 to 2 nm, and which orders at ~5.4 K. The…

Unstable states of the solar coronal magnetic field structure result in various flare behaviors. In this study, we compared the confined and eruptive flares that occurred under similar magnetic circumstances in the active region 12673, on…

Solar and Stellar Astrophysics · Physics 2025-03-24 Kouhei Teraoka , Daiki Yamasaki , Yusuke Kawabata , Shinsuke Imada , Toshifumi Shimizu

We studied the physical parameters of the penumbra in a large and fully-developed sunspot, one of the largest over the last two solar cycles, by using full-Stokes measurements taken at the photospheric Fe I 617.3 nm and chromospheric Ca II…

Solar and Stellar Astrophysics · Physics 2019-03-20 Mariarita Murabito , I. Ermolli , F. Giorgi , M. Stangalini , S. L. Guglielmino , S. Jafarzadeh , H. Socas-Navarro , P. Romano , F. Zuccarello

We propose that the magnetosphere reconfiguration induced by magnetic twists in the closed field line region can account for the mode-switching of intermittent pulsars. We carefully investigate the properties of axisymmetric force-free…

High Energy Astrophysical Phenomena · Physics 2016-08-17 Lei Huang , Cong Yu , Hao Tong

We introduce a multi-configurational approach to study the magneto-structural correlations in $3d^2$ systems. The theoretical framework represents a restricted active space self-consistent field method, with active space optimized to the…

Strongly Correlated Electrons · Physics 2022-05-19 M. Georgiev , H. Chamati

Conjugated polymers exhibit unique spin-dependent phenomena arising from weak yet critical hyperfine interactions. Understanding these spin effects, particularly the spin-dependent formation and decay of correlated spin pairs, is important…

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